CA2446822A1 - Data-driven software architecture for digital sound processing and equalization - Google Patents

Data-driven software architecture for digital sound processing and equalization Download PDF

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Publication number
CA2446822A1
CA2446822A1 CA002446822A CA2446822A CA2446822A1 CA 2446822 A1 CA2446822 A1 CA 2446822A1 CA 002446822 A CA002446822 A CA 002446822A CA 2446822 A CA2446822 A CA 2446822A CA 2446822 A1 CA2446822 A1 CA 2446822A1
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Canada
Prior art keywords
sound processing
channel inputs
signal processor
equalization
data
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CA002446822A
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French (fr)
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CA2446822C (en
Inventor
Bradley F. Eid
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Harman International Industries Inc
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Individual
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Publication of CA2446822A1 publication Critical patent/CA2446822A1/en
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Publication of CA2446822C publication Critical patent/CA2446822C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers without distortion of the input signal
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/32—Automatic control in amplifiers having semiconductor devices the control being dependent upon ambient noise level or sound level
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S3/00—Systems employing more than two channels, e.g. quadraphonic
    • H04S3/002—Non-adaptive circuits, e.g. manually adjustable or static, for enhancing the sound image or the spatial distribution
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S3/00—Systems employing more than two channels, e.g. quadraphonic
    • H04S3/02—Systems employing more than two channels, e.g. quadraphonic of the matrix type, i.e. in which input signals are combined algebraically, e.g. after having been phase shifted with respect to each other
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S5/00—Pseudo-stereo systems, e.g. in which additional channel signals are derived from monophonic signals by means of phase shifting, time delay or reverberation 
    • H04S5/005—Pseudo-stereo systems, e.g. in which additional channel signals are derived from monophonic signals by means of phase shifting, time delay or reverberation  of the pseudo five- or more-channel type, e.g. virtual surround
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S7/00—Indicating arrangements; Control arrangements, e.g. balance control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
    • H04R2499/10—General applications
    • H04R2499/13—Acoustic transducers and sound field adaptation in vehicles
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S7/00—Indicating arrangements; Control arrangements, e.g. balance control
    • H04S7/30—Control circuits for electronic adaptation of the sound field
    • H04S7/307—Frequency adjustment, e.g. tone control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S7/00—Indicating arrangements; Control arrangements, e.g. balance control
    • H04S7/40—Visual indication of stereophonic sound image

Abstract

A digital sound processing design system for a vehicle audio system includes a computer and a design tool that is run by the computer. The design tool allows a user to define sound processing criteria that is stored in a template file.
An audio signal processor is connected to the first and second real channel inputs of an audio source. Memory that is coupled to the audio signal processor stores the template file. The sound processing engine that is coupled to the audio signal processor and the memory reads the template file at run-time to obtain the sound processing criteria. The sound processing engine applies the sound processing criteria to the first and second real channel inputs. The design tool allows a user to create virtual channel inputs and outputs that are based, in part, on the first and second real channel inputs.
CA002446822A 2001-05-07 2002-04-19 Data-driven software architecture for digital sound processing and equalization Expired - Lifetime CA2446822C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09/850,500 2001-05-07
US09/850,500 US6804565B2 (en) 2001-05-07 2001-05-07 Data-driven software architecture for digital sound processing and equalization
PCT/US2002/012461 WO2002091798A2 (en) 2001-05-07 2002-04-19 Data-driven software architecture for digital sound processing and equalization

Publications (2)

Publication Number Publication Date
CA2446822A1 true CA2446822A1 (en) 2002-11-14
CA2446822C CA2446822C (en) 2009-02-03

Family

ID=25308300

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002446822A Expired - Lifetime CA2446822C (en) 2001-05-07 2002-04-19 Data-driven software architecture for digital sound processing and equalization

Country Status (6)

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US (5) US6804565B2 (en)
EP (1) EP1393592B1 (en)
JP (2) JP2005513825A (en)
CA (1) CA2446822C (en)
DE (1) DE60227071D1 (en)
WO (1) WO2002091798A2 (en)

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