CA2598541A1 - Near-transparent or transparent multi-channel encoder/decoder scheme - Google Patents
Near-transparent or transparent multi-channel encoder/decoder scheme Download PDFInfo
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- CA2598541A1 CA2598541A1 CA002598541A CA2598541A CA2598541A1 CA 2598541 A1 CA2598541 A1 CA 2598541A1 CA 002598541 A CA002598541 A CA 002598541A CA 2598541 A CA2598541 A CA 2598541A CA 2598541 A1 CA2598541 A1 CA 2598541A1
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
- G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
- G10L19/008—Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S3/00—Systems employing more than two channels, e.g. quadraphonic
- H04S3/008—Systems employing more than two channels, e.g. quadraphonic in which the audio signals are in digital form, i.e. employing more than two discrete digital channels
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S2420/00—Techniques used stereophonic systems covered by H04S but not provided for in its groups
- H04S2420/03—Application of parametric coding in stereophonic audio systems
Abstract
Near-transparent or transparent multi-channel encoder/decoder scheme Abstract A multi-channel encoder/decoder scheme additionally preferably generates a waveform-type residual signal (16). This residual signal is transmitted (18) together with one or more multi-channel parameters (14) to a decoder. In contrast to a purely parametric multi-channel decoder, the enhanced decoder generates a multi-channel output signal having an improved output quality because of the additional residual signal.
Claims (29)
1. Multi-channel encoder for encoding an original multi-channel signal having at least two channels, comprising:
a parameter provider for providing one or more parameters, the one or more parameters being formed such that a reconstructed multi-channel signal can be formed using one or more downmix channels derived from the multi-channel signal and the one or more parameters;
a residual encoder for generating an encoded residual signal based on the original multi-channel signal, the one or more downmix channels or the one or more parameters so that the reconstructed multi-channel signal when formed using the residual signal is more similar to the original multi-channel signal than when formed without using the residual signal; and a data stream former for forming a data stream having the residual signal and the one or more parameters.
a parameter provider for providing one or more parameters, the one or more parameters being formed such that a reconstructed multi-channel signal can be formed using one or more downmix channels derived from the multi-channel signal and the one or more parameters;
a residual encoder for generating an encoded residual signal based on the original multi-channel signal, the one or more downmix channels or the one or more parameters so that the reconstructed multi-channel signal when formed using the residual signal is more similar to the original multi-channel signal than when formed without using the residual signal; and a data stream former for forming a data stream having the residual signal and the one or more parameters.
2. Multi-channel encoder in accordance with claim 1, in which the data stream former is operative to form a scalable data stream, in which the one or more parameters and the residual signal are in different scaling layers.
3. Multi-channel encoder in accordance with claim 1, in which the residual encoder is operative to calculate the encoded residual signal as a waveform residual signal.
4. Multi-channel encoder in accordance with claim 1, in which the residual encoder is operative to generate the residual signal based on the one or more parameters and the original multi-channel signal without the one or more downmix channels so that the residual signal has a smaller energy in comparison to a generation of the residual signal without using the one or more parameters.
5. Multi-channel encoder in accordance with claim 4, in which the parameter provider comprises:
an alignment calculator for calculating a time alignment parameter to be provided to a time aligner for aligning a first channel and a second channel of the at least two channels; or a gain calculator for calculating a gain not equal to 1, for weighting a channel so that a difference between two channels is reduced compared to a gain value of one.
an alignment calculator for calculating a time alignment parameter to be provided to a time aligner for aligning a first channel and a second channel of the at least two channels; or a gain calculator for calculating a gain not equal to 1, for weighting a channel so that a difference between two channels is reduced compared to a gain value of one.
6. Multi-channel encoder in accordance with claim 5, in which the residual encoder is operative to calculate and encode a difference signal derived from a first channel and an aligned or weighted second channel.
7. Multi-channel encoder in accordance with claim 5, further comprising a downmixer for generating a downmix channel using the aligned channels.
8. Multi-channel encoder in accordance with claim 1, further comprising an analysis filterbank for splitting the multi-channel signal into a plurality of frequency bands, wherein the parameter provider and the residual encoder are operative to operate on the subband signals, and wherein the data stream former is operative to collect encoded residual signals and parameters for a plurality of frequency bands.
9. Multi-channel encoder in accordance with claim 1, in which the residual encoder further comprises:
a multi-channel decoder for generating a decoded multi-channel signal using the one or more downmix channels and the one or more parameters;
an error calculator for calculating a multi-channel error signal representation based on the decoded multi-channel signal and the original multi-channel signal; and a residual processor for processing the multi-channel error signal representation to obtain the encoded residual signal.
a multi-channel decoder for generating a decoded multi-channel signal using the one or more downmix channels and the one or more parameters;
an error calculator for calculating a multi-channel error signal representation based on the decoded multi-channel signal and the original multi-channel signal; and a residual processor for processing the multi-channel error signal representation to obtain the encoded residual signal.
10. Multi-channel encoder in accordance with claim 9, in which the residual processor includes a multi-channel encoder for generating a multi-channel representation of the multi-channel error signal representation.
11. Multi-channel encoder in accordance with claim 10, in which the residual processor is operative to further generate one or more downmix channels of the multi-channel error signal representation.
12. Multi-channel encoder in accordance with claim 1, in which the parameter provider is operative to provide binaural cue coding (BCC) parameters such as inter-channel level differences, inter-channel coherence parameters, inter-channel time differences or channel envelope cues.
13. Method of encoding an original multi-channel signal having at least two channels, comprising:
providing one or more parameters, the one or more parameters being formed such that a reconstructed multi-channel signal can be formed using one or more downmix channels derived from the multi-channel signal and the one or more parameters;
generating an encoded residual signal based on the original multi-channel signal, the one or more downmix channels or the one or more parameters so that the reconstructed multi-channel signal when formed using the residual signal is more similar' to the original multi-channel signal than when formed without using the residual signal; and forming a data stream having the residual signal and the one or more parameters.
providing one or more parameters, the one or more parameters being formed such that a reconstructed multi-channel signal can be formed using one or more downmix channels derived from the multi-channel signal and the one or more parameters;
generating an encoded residual signal based on the original multi-channel signal, the one or more downmix channels or the one or more parameters so that the reconstructed multi-channel signal when formed using the residual signal is more similar' to the original multi-channel signal than when formed without using the residual signal; and forming a data stream having the residual signal and the one or more parameters.
14. Multi-channel decoder for decoding an encoded multi-channel signal having one or more downmix channels, one or more parameters and an encoded residual signal, comprising:
a residual decoder for generating a decoded residual signal based on the encoded residual signal; and a multi-channel decoder for generating a first reconstructed multi-channel signal using one or more downmix channels and the one or more parameters, wherein the multi-channel decoder is further operative for generating a second reconstructed multi-channel signal using the one or more downmix channels and the decoded residual signal instead of the first reconstructed multi-channel signal or in addition to the first multi-channel signal, wherein the second reconstructed multi-channel signal is more similar to an original multi-channel signal than the first reconstructed multi-channel signal.
a residual decoder for generating a decoded residual signal based on the encoded residual signal; and a multi-channel decoder for generating a first reconstructed multi-channel signal using one or more downmix channels and the one or more parameters, wherein the multi-channel decoder is further operative for generating a second reconstructed multi-channel signal using the one or more downmix channels and the decoded residual signal instead of the first reconstructed multi-channel signal or in addition to the first multi-channel signal, wherein the second reconstructed multi-channel signal is more similar to an original multi-channel signal than the first reconstructed multi-channel signal.
15. Multi-channel decoder in accordance with claim 14, in which the encoded multi-channel signal is represented by a scaled data stream, the scaled data stream having a first scaling layer including the one or more parameters and a second scaling layer including the encoded residual signal, wherein the multi-channel encoder further comprises:
a data stream parser for extracting the first scaling layer or the second scaling layer.
a data stream parser for extracting the first scaling layer or the second scaling layer.
16. Multi-channel decoder in accordance with claim 14, in which the encoded residual signal depends on the one or more parameters; and in which the multi-channel decoder is operative to use the one or more downmix channels, the one or more parameters and the decoded residual signal for generating the second reconstructed multi-channel signal.
17. Multi-channel decoder in accordance with claim 14, in which the downmix channel depends on an alignment parameter or a gain parameter, and in which the multi-channel decoder is operative to weight the downmix channel using a first weighting rule based on the gain parameter and to weight the downmix channel using a second weighting rule using the gain parameter, or to de-align one output channel with respect to the other output channel using the alignment parameter.
18. Multi-channel decoder in accordance with claim 14, in which the downmix channel depends on an alignment parameter or a gain parameter, and in which the multi-channel decoder is operative to weight the downmix channel using the gain parameter, to add the decoded residual signal to a weighted downmix channel and to again weight a resulting channel to obtain a first multi-channel output channel, to subtract the decoded residual signal from the downmix channel and to weight a resulting channel using the gain parameter, or to de-align a difference between the downmix channel and the decoded residual signal to obtain a second multi-channel output signal.
19. Multi-channel decoder in accordance with claim 14, in which the parameters include binaural cue coding (BCC) parameters such as inter-channel level differences, inter-channel coherence parameters, inter-channel time differences or channel envelope cues, and in which the multi-channel decoder is operative to perform a multi-channel decoding operation in accordance with a binaural cue coding (BCC) scheme.
20. Multi-channel decoder in accordance with claim 14, in which the one or more downmix channels, the one or more parameters and the encoded residual signal are represented by subband-specific data, further comprising:
a synthesis filterbank for combining reconstructed subband data generated by the multi-channel decoder to obtain a full-band representation of the first or the second reconstructed multi-channel signal.
a synthesis filterbank for combining reconstructed subband data generated by the multi-channel decoder to obtain a full-band representation of the first or the second reconstructed multi-channel signal.
21. Method of decoding an encoded multi-channel signal having one or more downmix channels, one or more parameters and an encoded residual signal, comprising:
generating a decoded residual signal based on the encoded residual signal; and generating a first reconstructed multi-channel signal using one or more downmix channels and the one or more parameters, or generating a second reconstructed multi-channel signal using the one or more downmix channels and the decoded residual signal, wherein the second reconstructed multi-channel signal is more similar to an original multi-channel signal than the first reconstructed multi-channel signal.
generating a decoded residual signal based on the encoded residual signal; and generating a first reconstructed multi-channel signal using one or more downmix channels and the one or more parameters, or generating a second reconstructed multi-channel signal using the one or more downmix channels and the decoded residual signal, wherein the second reconstructed multi-channel signal is more similar to an original multi-channel signal than the first reconstructed multi-channel signal.
22. Multi-channel encoder for encoding an original multi-channel signal having at least two channels, comprising:
a time aligner for aligning a first channel and a second channel of the at least two channels using an alignment parameter;
a downmixer for generating a downmix channel using the aligned channels;
a gain calculator for calculating a gain parameter not equal to one for weighting an aligned channel so that the difference between the aligned channels is reduced compared to a gain value of 1; and a data stream former for forming a data stream having information on the downmix channel, information on the alignment parameter and information on the gain parameter.
a time aligner for aligning a first channel and a second channel of the at least two channels using an alignment parameter;
a downmixer for generating a downmix channel using the aligned channels;
a gain calculator for calculating a gain parameter not equal to one for weighting an aligned channel so that the difference between the aligned channels is reduced compared to a gain value of 1; and a data stream former for forming a data stream having information on the downmix channel, information on the alignment parameter and information on the gain parameter.
23. Multi-channel encoder in accordance with claim 20, further comprising a residual encoder for calculating and encoding a difference signal derived from the first channel and an aligned and weighted second channel, wherein the data stream former is further operative to include an encoded residual signal into the data stream.
24. Multi-channel decoder for decoding an encoded multi-channel signal having information on one or more downmix channels, information on a gain parameter, and information on an alignment parameter, comprising:
a downmix channel decoder for generating a decoded downmix signal;
a processor for processing the decoded downmix channel using the gain parameter to obtain a first decoded output channel and for processing the decoded downmix channel using the gain parameter and to de-align using the alignment parameter to obtain a second decoded output channel.
a downmix channel decoder for generating a decoded downmix signal;
a processor for processing the decoded downmix channel using the gain parameter to obtain a first decoded output channel and for processing the decoded downmix channel using the gain parameter and to de-align using the alignment parameter to obtain a second decoded output channel.
25. Multi-channel decoder in accordance with claim 23, in which the encoded multi-channel signal further comprises an encoded residual signal, the multi-channel decoder further comprising:
a residual decoder for generating a decoded residual signal, and in which the processor is operative for primarily weighting the downmix channel using the gain parameter, to add the decoded residual signal and to secondarily weighting using the gain parameter to obtain a first reconstructed channel, and to subtract the decoded residual signal from the downmix channel before weighting and to de-align to obtain the reconstructed second channel.
a residual decoder for generating a decoded residual signal, and in which the processor is operative for primarily weighting the downmix channel using the gain parameter, to add the decoded residual signal and to secondarily weighting using the gain parameter to obtain a first reconstructed channel, and to subtract the decoded residual signal from the downmix channel before weighting and to de-align to obtain the reconstructed second channel.
26. Method of encoding an original multi-channel signal having at least two channels, comprising:
'time-aligning a first channel and a second channel of the at least two channels using an alignment parameter;
generating a downmix channel using the aligned channels;
calculating a gain parameter not equal to one for weighting an aligned channel so that the difference between the aligned channels is reduced compared to a gain value of 1; and forming a data stream having information on the downmix channel, information on the alignment parameter and information on the gain parameter.
'time-aligning a first channel and a second channel of the at least two channels using an alignment parameter;
generating a downmix channel using the aligned channels;
calculating a gain parameter not equal to one for weighting an aligned channel so that the difference between the aligned channels is reduced compared to a gain value of 1; and forming a data stream having information on the downmix channel, information on the alignment parameter and information on the gain parameter.
27. Method of decoding an encoded multi-channel signal having information on one or more downmix channels, information on a gain parameter, and information on an alignment parameter, comprising:
generating a decoded downmix signal;
processing the decoded downmix channel using the gain parameter to obtain a first decoded output channel and for processing the decoded downmix channel using the gain parameter and a de-alignment based on the alignment parameter to obtain a second decoded output channel.
generating a decoded downmix signal;
processing the decoded downmix channel using the gain parameter to obtain a first decoded output channel and for processing the decoded downmix channel using the gain parameter and a de-alignment based on the alignment parameter to obtain a second decoded output channel.
28. Encoded multi-channel signal having information on one or more downmix channels, on one or more parameters resulting, when combined with the one or more downmix channels, in a first reconstructed multi-channel signal, and an encoded residual signal resulting, when combined with the one or more downmix channel, in a second reconstructed multi-channel signal, wherein the second reconstructed multi-channel signal is more similar to an original multi-channel signal than the first reconstructed multi-channel signal
29. Computer program for performing method of decoding an encoded multi-channel signal having one or more downmix channels, one or more parameters and an encoded residual signal, when running on a computer, the method comprising the following steps:
generating a decoded residual signal based on the encoded residual signal; and generating a first reconstructed multi-channel signal using one or more downmix channels and the one or more parameters, or generating a second reconstructed multi-channel signal using the one or more downmix channels and the decoded residual signal, wherein the second reconstructed multi-channel signal is more similar to an original multi-channel signal than the first reconstructed multi-channel signal.
generating a decoded residual signal based on the encoded residual signal; and generating a first reconstructed multi-channel signal using one or more downmix channels and the one or more parameters, or generating a second reconstructed multi-channel signal using the one or more downmix channels and the decoded residual signal, wherein the second reconstructed multi-channel signal is more similar to an original multi-channel signal than the first reconstructed multi-channel signal.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US65521605P | 2005-02-22 | 2005-02-22 | |
| US60/655,216 | 2005-02-22 | ||
| US11/080,775 | 2005-03-14 | ||
| US11/080,775 US7573912B2 (en) | 2005-02-22 | 2005-03-14 | Near-transparent or transparent multi-channel encoder/decoder scheme |
| PCT/EP2005/010685 WO2006089570A1 (en) | 2005-02-22 | 2005-10-04 | Near-transparent or transparent multi-channel encoder/decoder scheme |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2598541A1 true CA2598541A1 (en) | 2006-08-31 |
| CA2598541C CA2598541C (en) | 2012-08-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2598541A Active CA2598541C (en) | 2005-02-22 | 2005-10-04 | Near-transparent or transparent multi-channel encoder/decoder scheme |
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| Country | Link |
|---|---|
| US (1) | US7573912B2 (en) |
| EP (1) | EP1851997B1 (en) |
| JP (1) | JP4887307B2 (en) |
| KR (1) | KR100954179B1 (en) |
| CN (2) | CN102270452B (en) |
| AT (1) | ATE406076T1 (en) |
| AU (1) | AU2005328264B2 (en) |
| BR (1) | BRPI0520053B1 (en) |
| CA (1) | CA2598541C (en) |
| DE (1) | DE602005009262D1 (en) |
| ES (1) | ES2312025T3 (en) |
| HK (1) | HK1107495A1 (en) |
| IL (1) | IL185304A0 (en) |
| MX (1) | MX2007009887A (en) |
| NO (1) | NO339907B1 (en) |
| PL (1) | PL1851997T3 (en) |
| PT (1) | PT1851997E (en) |
| RU (1) | RU2388176C2 (en) |
| WO (1) | WO2006089570A1 (en) |
Families Citing this family (116)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1735778A1 (en) * | 2004-04-05 | 2006-12-27 | Koninklijke Philips Electronics N.V. | Stereo coding and decoding methods and apparatuses thereof |
| PL2175671T3 (en) * | 2004-07-14 | 2012-10-31 | Koninl Philips Electronics Nv | Method, device, encoder apparatus, decoder apparatus and audio system |
| KR100773539B1 (en) * | 2004-07-14 | 2007-11-05 | 삼성전자주식회사 | Multi channel audio data encoding/decoding method and apparatus |
| WO2006048815A1 (en) * | 2004-11-04 | 2006-05-11 | Koninklijke Philips Electronics N.V. | Encoding and decoding a set of signals |
| EP1691348A1 (en) * | 2005-02-14 | 2006-08-16 | Ecole Polytechnique Federale De Lausanne | Parametric joint-coding of audio sources |
| EP1858006B1 (en) * | 2005-03-25 | 2017-01-25 | Panasonic Intellectual Property Corporation of America | Sound encoding device and sound encoding method |
| KR101315077B1 (en) * | 2005-03-30 | 2013-10-08 | 코닌클리케 필립스 일렉트로닉스 엔.브이. | Scalable multi-channel audio coding |
| JP5106383B2 (en) * | 2005-03-30 | 2012-12-26 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | Audio encoding and decoding |
| US7751572B2 (en) * | 2005-04-15 | 2010-07-06 | Dolby International Ab | Adaptive residual audio coding |
| US8090586B2 (en) * | 2005-05-26 | 2012-01-03 | Lg Electronics Inc. | Method and apparatus for embedding spatial information and reproducing embedded signal for an audio signal |
| JP4988716B2 (en) | 2005-05-26 | 2012-08-01 | エルジー エレクトロニクス インコーポレイティド | Audio signal decoding method and apparatus |
| EP1899958B1 (en) * | 2005-05-26 | 2013-08-07 | LG Electronics Inc. | Method and apparatus for decoding an audio signal |
| JP2009500657A (en) * | 2005-06-30 | 2009-01-08 | エルジー エレクトロニクス インコーポレイティド | Apparatus and method for encoding and decoding audio signals |
| CA2613731C (en) * | 2005-06-30 | 2012-09-18 | Lg Electronics Inc. | Apparatus for encoding and decoding audio signal and method thereof |
| US8214221B2 (en) | 2005-06-30 | 2012-07-03 | Lg Electronics Inc. | Method and apparatus for decoding an audio signal and identifying information included in the audio signal |
| US8626503B2 (en) * | 2005-07-14 | 2014-01-07 | Erik Gosuinus Petrus Schuijers | Audio encoding and decoding |
| US7788107B2 (en) * | 2005-08-30 | 2010-08-31 | Lg Electronics Inc. | Method for decoding an audio signal |
| US8577483B2 (en) * | 2005-08-30 | 2013-11-05 | Lg Electronics, Inc. | Method for decoding an audio signal |
| US7761303B2 (en) * | 2005-08-30 | 2010-07-20 | Lg Electronics Inc. | Slot position coding of TTT syntax of spatial audio coding application |
| JP4568363B2 (en) * | 2005-08-30 | 2010-10-27 | エルジー エレクトロニクス インコーポレイティド | Audio signal decoding method and apparatus |
| US8019614B2 (en) * | 2005-09-02 | 2011-09-13 | Panasonic Corporation | Energy shaping apparatus and energy shaping method |
| US7751485B2 (en) * | 2005-10-05 | 2010-07-06 | Lg Electronics Inc. | Signal processing using pilot based coding |
| KR100878833B1 (en) * | 2005-10-05 | 2009-01-14 | 엘지전자 주식회사 | Method and apparatus for signal processing and encoding and decoding method, and apparatus therefor |
| US7646319B2 (en) * | 2005-10-05 | 2010-01-12 | Lg Electronics Inc. | Method and apparatus for signal processing and encoding and decoding method, and apparatus therefor |
| EP1946302A4 (en) * | 2005-10-05 | 2009-08-19 | Lg Electronics Inc | Method and apparatus for signal processing and encoding and decoding method, and apparatus therefor |
| US7672379B2 (en) * | 2005-10-05 | 2010-03-02 | Lg Electronics Inc. | Audio signal processing, encoding, and decoding |
| US7696907B2 (en) | 2005-10-05 | 2010-04-13 | Lg Electronics Inc. | Method and apparatus for signal processing and encoding and decoding method, and apparatus therefor |
| US7761289B2 (en) * | 2005-10-24 | 2010-07-20 | Lg Electronics Inc. | Removing time delays in signal paths |
| JP5025485B2 (en) * | 2005-10-31 | 2012-09-12 | パナソニック株式会社 | Stereo encoding apparatus and stereo signal prediction method |
| KR100803212B1 (en) * | 2006-01-11 | 2008-02-14 | 삼성전자주식회사 | Method and apparatus for scalable channel decoding |
| US7752053B2 (en) * | 2006-01-13 | 2010-07-06 | Lg Electronics Inc. | Audio signal processing using pilot based coding |
| KR100953643B1 (en) * | 2006-01-19 | 2010-04-20 | 엘지전자 주식회사 | Method and apparatus for processing a media signal |
| EP1989704B1 (en) * | 2006-02-03 | 2013-10-16 | Electronics and Telecommunications Research Institute | Method and apparatus for control of randering multiobject or multichannel audio signal using spatial cue |
| KR20080093419A (en) * | 2006-02-07 | 2008-10-21 | 엘지전자 주식회사 | Apparatus and method for encoding/decoding signal |
| ES2391116T3 (en) * | 2006-02-23 | 2012-11-21 | Lg Electronics Inc. | Method and apparatus for processing an audio signal |
| US7835904B2 (en) * | 2006-03-03 | 2010-11-16 | Microsoft Corp. | Perceptual, scalable audio compression |
| KR100773562B1 (en) | 2006-03-06 | 2007-11-07 | 삼성전자주식회사 | Method and apparatus for generating stereo signal |
| US7676374B2 (en) * | 2006-03-28 | 2010-03-09 | Nokia Corporation | Low complexity subband-domain filtering in the case of cascaded filter banks |
| BRPI0711104A2 (en) | 2006-09-29 | 2011-08-23 | Lg Eletronics Inc | methods and apparatus for encoding and decoding object-based audio signals |
| US8687829B2 (en) * | 2006-10-16 | 2014-04-01 | Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. | Apparatus and method for multi-channel parameter transformation |
| ES2378734T3 (en) * | 2006-10-16 | 2012-04-17 | Dolby International Ab | Enhanced coding and representation of coding parameters of multichannel downstream mixing objects |
| US8571875B2 (en) * | 2006-10-18 | 2013-10-29 | Samsung Electronics Co., Ltd. | Method, medium, and apparatus encoding and/or decoding multichannel audio signals |
| EP2102855A4 (en) * | 2006-12-07 | 2010-07-28 | Lg Electronics Inc | A method and an apparatus for decoding an audio signal |
| FR2911031B1 (en) * | 2006-12-28 | 2009-04-10 | Actimagine Soc Par Actions Sim | AUDIO CODING METHOD AND DEVICE |
| FR2911020B1 (en) * | 2006-12-28 | 2009-05-01 | Actimagine Soc Par Actions Sim | AUDIO CODING METHOD AND DEVICE |
| JP2010518460A (en) * | 2007-02-13 | 2010-05-27 | エルジー エレクトロニクス インコーポレイティド | Audio signal processing method and apparatus |
| US8725279B2 (en) | 2007-03-16 | 2014-05-13 | Lg Electronics Inc. | Method and an apparatus for processing an audio signal |
| GB0705328D0 (en) * | 2007-03-20 | 2007-04-25 | Skype Ltd | Method of transmitting data in a communication system |
| JP5220840B2 (en) * | 2007-03-30 | 2013-06-26 | エレクトロニクス アンド テレコミュニケーションズ リサーチ インスチチュート | Multi-object audio signal encoding and decoding apparatus and method for multi-channel |
| EP2158587A4 (en) | 2007-06-08 | 2010-06-02 | Lg Electronics Inc | A method and an apparatus for processing an audio signal |
| CN101802907B (en) * | 2007-09-19 | 2013-11-13 | 爱立信电话股份有限公司 | Joint enhancement of multi-channel audio |
| GB2453117B (en) | 2007-09-25 | 2012-05-23 | Motorola Mobility Inc | Apparatus and method for encoding a multi channel audio signal |
| WO2009049895A1 (en) * | 2007-10-17 | 2009-04-23 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Audio coding using downmix |
| EP2210253A4 (en) * | 2007-11-21 | 2010-12-01 | Lg Electronics Inc | A method and an apparatus for processing a signal |
| CN101911634A (en) * | 2007-12-03 | 2010-12-08 | 诺基亚公司 | A packet generator |
| JPWO2009081567A1 (en) * | 2007-12-21 | 2011-05-06 | パナソニック株式会社 | Stereo signal conversion apparatus, stereo signal inverse conversion apparatus, and methods thereof |
| EP2248263B1 (en) * | 2008-01-31 | 2012-12-26 | Agency for Science, Technology And Research | Method and device of bitrate distribution/truncation for scalable audio coding |
| US9111525B1 (en) * | 2008-02-14 | 2015-08-18 | Foundation for Research and Technology—Hellas (FORTH) Institute of Computer Science (ICS) | Apparatuses, methods and systems for audio processing and transmission |
| MX2010012580A (en) | 2008-05-23 | 2010-12-20 | Koninkl Philips Electronics Nv | A parametric stereo upmix apparatus, a parametric stereo decoder, a parametric stereo downmix apparatus, a parametric stereo encoder. |
| US8355921B2 (en) * | 2008-06-13 | 2013-01-15 | Nokia Corporation | Method, apparatus and computer program product for providing improved audio processing |
| KR101428487B1 (en) * | 2008-07-11 | 2014-08-08 | 삼성전자주식회사 | Method and apparatus for encoding and decoding multi-channel |
| US8315396B2 (en) * | 2008-07-17 | 2012-11-20 | Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. | Apparatus and method for generating audio output signals using object based metadata |
| AU2013200578B2 (en) * | 2008-07-17 | 2015-07-09 | Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. | Apparatus and method for generating audio output signals using object based metadata |
| CN102160113B (en) * | 2008-08-11 | 2013-05-08 | 诺基亚公司 | Multichannel audio coder and decoder |
| US9330671B2 (en) * | 2008-10-10 | 2016-05-03 | Telefonaktiebolaget L M Ericsson (Publ) | Energy conservative multi-channel audio coding |
| MX2011011399A (en) * | 2008-10-17 | 2012-06-27 | Univ Friedrich Alexander Er | Audio coding using downmix. |
| US20120121091A1 (en) * | 2009-02-13 | 2012-05-17 | Nokia Corporation | Ambience coding and decoding for audio applications |
| EP2395504B1 (en) * | 2009-02-13 | 2013-09-18 | Huawei Technologies Co., Ltd. | Stereo encoding method and apparatus |
| CN101826326B (en) * | 2009-03-04 | 2012-04-04 | 华为技术有限公司 | Stereo encoding method and device as well as encoder |
| AU2013206557B2 (en) * | 2009-03-17 | 2015-11-12 | Dolby International Ab | Advanced stereo coding based on a combination of adaptively selectable left/right or mid/side stereo coding and of parametric stereo coding |
| CA2754671C (en) | 2009-03-17 | 2017-01-10 | Dolby International Ab | Advanced stereo coding based on a combination of adaptively selectable left/right or mid/side stereo coding and of parametric stereo coding |
| AU2015246158B2 (en) * | 2009-03-17 | 2017-10-26 | Dolby International Ab | Advanced stereo coding based on a combination of adaptively selectable left/right or mid/side stereo coding and of parametric stereo coding. |
| KR101313116B1 (en) | 2009-03-24 | 2013-09-30 | 후아웨이 테크놀러지 컴퍼니 리미티드 | Method and device for switching a signal delay |
| CN101533641B (en) * | 2009-04-20 | 2011-07-20 | 华为技术有限公司 | Method for correcting channel delay parameters of multichannel signals and device |
| GB2470059A (en) * | 2009-05-08 | 2010-11-10 | Nokia Corp | Multi-channel audio processing using an inter-channel prediction model to form an inter-channel parameter |
| CN101556799B (en) * | 2009-05-14 | 2013-08-28 | 华为技术有限公司 | Audio decoding method and audio decoder |
| WO2011013381A1 (en) * | 2009-07-31 | 2011-02-03 | パナソニック株式会社 | Coding device and decoding device |
| KR101613975B1 (en) * | 2009-08-18 | 2016-05-02 | 삼성전자주식회사 | Method and apparatus for encoding multi-channel audio signal, and method and apparatus for decoding multi-channel audio signal |
| JP5345024B2 (en) * | 2009-08-28 | 2013-11-20 | 日本放送協会 | Three-dimensional acoustic encoding device, three-dimensional acoustic decoding device, encoding program, and decoding program |
| EP2476113B1 (en) * | 2009-09-11 | 2014-08-13 | Nokia Corporation | Method, apparatus and computer program product for audio coding |
| KR101710113B1 (en) * | 2009-10-23 | 2017-02-27 | 삼성전자주식회사 | Apparatus and method for encoding/decoding using phase information and residual signal |
| US8942989B2 (en) * | 2009-12-28 | 2015-01-27 | Panasonic Intellectual Property Corporation Of America | Speech coding of principal-component channels for deleting redundant inter-channel parameters |
| JP5333257B2 (en) * | 2010-01-20 | 2013-11-06 | 富士通株式会社 | Encoding apparatus, encoding system, and encoding method |
| EP2369861B1 (en) * | 2010-03-25 | 2016-07-27 | Nxp B.V. | Multi-channel audio signal processing |
| JP5604933B2 (en) * | 2010-03-30 | 2014-10-15 | 富士通株式会社 | Downmix apparatus and downmix method |
| EP3582217B1 (en) * | 2010-04-09 | 2022-11-09 | Dolby International AB | Stereo coding using either a prediction mode or a non-prediction mode |
| US8948403B2 (en) * | 2010-08-06 | 2015-02-03 | Samsung Electronics Co., Ltd. | Method of processing signal, encoding apparatus thereof, decoding apparatus thereof, and signal processing system |
| ES2526320T3 (en) * | 2010-08-24 | 2015-01-09 | Dolby International Ab | Hiding intermittent mono reception of FM stereo radio receivers |
| EP2612321B1 (en) | 2010-09-28 | 2016-01-06 | Huawei Technologies Co., Ltd. | Device and method for postprocessing decoded multi-channel audio signal or decoded stereo signal |
| JP5949270B2 (en) * | 2012-07-24 | 2016-07-06 | 富士通株式会社 | Audio decoding apparatus, audio decoding method, and audio decoding computer program |
| KR20140017338A (en) * | 2012-07-31 | 2014-02-11 | 인텔렉추얼디스커버리 주식회사 | Apparatus and method for audio signal processing |
| CA2881065C (en) * | 2012-08-10 | 2020-03-10 | Thorsten Kastner | Encoder, decoder, system and method employing a residual concept for parametric audio object coding |
| CN104704558A (en) * | 2012-09-14 | 2015-06-10 | 杜比实验室特许公司 | Multi-channel audio content analysis based upmix detection |
| EP2757559A1 (en) * | 2013-01-22 | 2014-07-23 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Apparatus and method for spatial audio object coding employing hidden objects for signal mixture manipulation |
| TWI546799B (en) | 2013-04-05 | 2016-08-21 | 杜比國際公司 | Audio encoder and decoder |
| KR20190134821A (en) | 2013-04-05 | 2019-12-04 | 돌비 인터네셔널 에이비 | Stereo audio encoder and decoder |
| US8804971B1 (en) * | 2013-04-30 | 2014-08-12 | Dolby International Ab | Hybrid encoding of higher frequency and downmixed low frequency content of multichannel audio |
| KR101761099B1 (en) * | 2013-05-24 | 2017-07-25 | 돌비 인터네셔널 에이비 | Methods for audio encoding and decoding, corresponding computer-readable media and corresponding audio encoder and decoder |
| AU2014280256B2 (en) | 2013-06-10 | 2016-10-27 | Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. | Apparatus and method for audio signal envelope encoding, processing and decoding by splitting the audio signal envelope employing distribution quantization and coding |
| SG11201510162WA (en) | 2013-06-10 | 2016-01-28 | Fraunhofer Ges Forschung | Apparatus and method for audio signal envelope encoding, processing and decoding by modelling a cumulative sum representation employing distribution quantization and coding |
| EP2830052A1 (en) | 2013-07-22 | 2015-01-28 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Audio decoder, audio encoder, method for providing at least four audio channel signals on the basis of an encoded representation, method for providing an encoded representation on the basis of at least four audio channel signals and computer program using a bandwidth extension |
| EP2830053A1 (en) * | 2013-07-22 | 2015-01-28 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Multi-channel audio decoder, multi-channel audio encoder, methods and computer program using a residual-signal-based adjustment of a contribution of a decorrelated signal |
| RU2639952C2 (en) * | 2013-08-28 | 2017-12-25 | Долби Лабораторис Лайсэнзин Корпорейшн | Hybrid speech amplification with signal form coding and parametric coding |
| EP2854133A1 (en) * | 2013-09-27 | 2015-04-01 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Generation of a downmix signal |
| EP3149955B1 (en) | 2014-05-28 | 2019-05-01 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Data processor and transport of user control data to audio decoders and renderers |
| EP3067885A1 (en) * | 2015-03-09 | 2016-09-14 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Apparatus and method for encoding or decoding a multi-channel signal |
| KR20180056662A (en) | 2015-09-25 | 2018-05-29 | 보이세지 코포레이션 | Method and system for encoding a stereo sound signal using coding parameters of a primary channel to encode a secondary channel |
| CA2987808C (en) | 2016-01-22 | 2020-03-10 | Guillaume Fuchs | Apparatus and method for encoding or decoding an audio multi-channel signal using spectral-domain resampling |
| US10210871B2 (en) * | 2016-03-18 | 2019-02-19 | Qualcomm Incorporated | Audio processing for temporally mismatched signals |
| CN106162180A (en) * | 2016-06-30 | 2016-11-23 | 北京奇艺世纪科技有限公司 | A kind of image coding/decoding method and device |
| AU2017357453B2 (en) * | 2016-11-08 | 2021-01-28 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Apparatus and method for encoding or decoding a multichannel signal using a side gain and a residual gain |
| EP3539127B1 (en) * | 2016-11-08 | 2020-09-02 | Fraunhofer Gesellschaft zur Förderung der Angewand | Downmixer and method for downmixing at least two channels and multichannel encoder and multichannel decoder |
| CN109215667B (en) * | 2017-06-29 | 2020-12-22 | 华为技术有限公司 | Time delay estimation method and device |
| EP3985665A1 (en) | 2018-04-05 | 2022-04-20 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Apparatus, method or computer program for estimating an inter-channel time difference |
| CN114708874A (en) * | 2018-05-31 | 2022-07-05 | 华为技术有限公司 | Coding method and device for stereo signal |
| CN110403582B (en) * | 2019-07-23 | 2021-12-03 | 宏人仁医医疗器械设备(东莞)有限公司 | Method for analyzing pulse wave form quality |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR970005131B1 (en) * | 1994-01-18 | 1997-04-12 | 대우전자 주식회사 | Digital audio encoding apparatus adaptive to the human audatory characteristic |
| JP2852862B2 (en) * | 1994-02-01 | 1999-02-03 | 株式会社グラフィックス・コミュニケーション・ラボラトリーズ | Method and apparatus for converting PCM audio signal |
| KR100335611B1 (en) * | 1997-11-20 | 2002-10-09 | 삼성전자 주식회사 | Scalable stereo audio encoding/decoding method and apparatus |
| US7292901B2 (en) * | 2002-06-24 | 2007-11-06 | Agere Systems Inc. | Hybrid multi-channel/cue coding/decoding of audio signals |
| KR20040097300A (en) | 2002-04-09 | 2004-11-17 | 코닌클리케 필립스 일렉트로닉스 엔.브이. | Compound objective lens with fold mirror |
| BRPI0308691B1 (en) * | 2002-04-10 | 2018-06-19 | Koninklijke Philips N.V. | "Methods for encoding a multi channel signal and for decoding multiple channel signal information, and arrangements for encoding and decoding a multiple channel signal" |
| ATE426235T1 (en) * | 2002-04-22 | 2009-04-15 | Koninkl Philips Electronics Nv | DECODING DEVICE WITH DECORORATION UNIT |
| DE60311794C5 (en) * | 2002-04-22 | 2022-11-10 | Koninklijke Philips N.V. | SIGNAL SYNTHESIS |
| AU2003216686A1 (en) | 2002-04-22 | 2003-11-03 | Koninklijke Philips Electronics N.V. | Parametric multi-channel audio representation |
| US7039204B2 (en) * | 2002-06-24 | 2006-05-02 | Agere Systems Inc. | Equalization for audio mixing |
| KR20050021484A (en) | 2002-07-16 | 2005-03-07 | 코닌클리케 필립스 일렉트로닉스 엔.브이. | Audio coding |
| US7394903B2 (en) * | 2004-01-20 | 2008-07-01 | Fraunhofer-Gesellschaft Zur Forderung Der Angewandten Forschung E.V. | Apparatus and method for constructing a multi-channel output signal or for generating a downmix signal |
| WO2005081229A1 (en) * | 2004-02-25 | 2005-09-01 | Matsushita Electric Industrial Co., Ltd. | Audio encoder and audio decoder |
| SG149871A1 (en) * | 2004-03-01 | 2009-02-27 | Dolby Lab Licensing Corp | Multichannel audio coding |
| US7391870B2 (en) * | 2004-07-09 | 2008-06-24 | Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E V | Apparatus and method for generating a multi-channel output signal |
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