CA2116410A1 - Electronic bell tone generator - Google Patents

Electronic bell tone generator

Info

Publication number
CA2116410A1
CA2116410A1 CA002116410A CA2116410A CA2116410A1 CA 2116410 A1 CA2116410 A1 CA 2116410A1 CA 002116410 A CA002116410 A CA 002116410A CA 2116410 A CA2116410 A CA 2116410A CA 2116410 A1 CA2116410 A1 CA 2116410A1
Authority
CA
Canada
Prior art keywords
pulse
width
predetermined
frequency
generated
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002116410A
Other languages
French (fr)
Other versions
CA2116410C (en
Inventor
Bart Falzarano, Jr.
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Cooper Wheelock Inc
Original Assignee
Wheelock Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wheelock Inc filed Critical Wheelock Inc
Publication of CA2116410A1 publication Critical patent/CA2116410A1/en
Application granted granted Critical
Publication of CA2116410C publication Critical patent/CA2116410C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
    • G10H5/00—Instruments in which the tones are generated by means of electronic generators
    • G10H5/10—Instruments in which the tones are generated by means of electronic generators using generation of non-sinusoidal basic tones, e.g. saw-tooth
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
    • G10H2230/00—General physical, ergonomic or hardware implementation of electrophonic musical tools or instruments, e.g. shape or architecture
    • G10H2230/045—Special instrument [spint], i.e. mimicking the ergonomy, shape, sound or other characteristic of a specific acoustic musical instrument category
    • G10H2230/251—Spint percussion, i.e. mimicking percussion instruments; Electrophonic musical instruments with percussion instrument features; Electrophonic aspects of acoustic percussion instruments, MIDI-like control therefor
    • G10H2230/351—Spint bell, i.e. mimicking bells, e.g. cow-bells

Abstract

A microprocessor provides a pulse width modulated pulse train at a predetermined frequency to a tuned resonant circuit having a transducer element. The first pulse has a predetermined width. The pulse widths of successive pulses are decreased in a predetermined manner until the pulse width reaches a minimally desired width. The next generated pulse has the first predetermined width and each successive width is decreased in the same predetermined manner. This pattern is generated repeatedly. Each one of these generated patterns produces an audible waveform from the tuned resonant circuit which changes over time. If the pulse train frequency, the pulse width modulation, and the circuit's resonant frequency are chosen correctly, the audible waveform will have the same characteristics as the waveform produced by a specified bell which has been struck.
CA002116410A 1993-03-03 1994-02-24 Electronic bell tone generator Expired - Lifetime CA2116410C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/025,965 US5432294A (en) 1993-03-03 1993-03-03 Electronic bell tone generator
US08/025,965 1993-03-03

Publications (2)

Publication Number Publication Date
CA2116410A1 true CA2116410A1 (en) 1994-09-04
CA2116410C CA2116410C (en) 2002-05-07

Family

ID=21829069

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002116410A Expired - Lifetime CA2116410C (en) 1993-03-03 1994-02-24 Electronic bell tone generator

Country Status (2)

Country Link
US (1) US5432294A (en)
CA (1) CA2116410C (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060139152A1 (en) * 2004-12-09 2006-06-29 Honeywell International, Inc. Multi-frequency fire alarm sounder
US20060137514A1 (en) * 2005-10-14 2006-06-29 Lai Johnny B W Vibration-activated musical toy
CN105719633B (en) * 2016-03-22 2019-10-11 奇瑞汽车股份有限公司 Alarm sound production method and device
US11715447B2 (en) * 2021-03-10 2023-08-01 Jonathan Edward Greenlee Spontaneous audio tone inducing system and method of use

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4373416A (en) * 1976-12-29 1983-02-15 Nippon Gakki Seizo Kabushiki Kaisha Wave generator for electronic musical instrument
US4183278A (en) * 1977-10-17 1980-01-15 Lectron Products, Inc. Driver circuit for tone generator
US4250787A (en) * 1979-02-01 1981-02-17 Calfax, Inc. Music tone generator
US4290334A (en) * 1980-07-22 1981-09-22 Justin Kramer Electronic wave sharing synthetic sound system
US4953437A (en) * 1989-01-17 1990-09-04 Gulbransen Incorporated Method and apparatus for digitally generating musical notes
JPH04204799A (en) * 1990-11-30 1992-07-27 Seikosha Co Ltd Acoustic signal synthesizing circuit

Also Published As

Publication number Publication date
US5432294A (en) 1995-07-11
CA2116410C (en) 2002-05-07

Similar Documents

Publication Publication Date Title
GB2165985A (en) Apparatus for inducing frequency reduction in human brain waves
CA2131567A1 (en) Spread spectrum clock generator and associated method
CA2104215A1 (en) Radio receiver for forming a baseband signal of time-varying frequencies
CA2201625A1 (en) Universal electronic identification tag
CA2158212A1 (en) Reduced Harmonic Switching Mode Apparatus and Method for Railroad Vehicle Signaling
DK0995463T3 (en) Device and electrical or electromagnetic signal to influence biological processes
GB2032159A (en) Electronic tone generator
CA2116410A1 (en) Electronic bell tone generator
EP0829960A3 (en) Improvements in or relating to electronic filters
CA2206173A1 (en) Improvements in time-domain electromagnetic geophysical mapping instruments
Pierce Periodicity and pitch perception
US6559758B2 (en) Multi-tone warning sounder
JP3328531B2 (en) Electronic whistle
CA2280386A1 (en) Electromagnetic geophysical mapping instruments
DE60210062T2 (en) COMMUNICATION BETWEEN A TRANSPONDER AND A QUERY UNIT
FR2454129A1 (en) Combined electronic metronome and tuning fork - has memory and manual selection circuit controlling frequency synthesiser to provide variety of audio tone and beat signals
GB2074774A (en) Simulated wind noise in electronic organs using digital noise generators
DE69524081D1 (en) Generator for generating electromagnetic waves
US4392406A (en) Switched capacitor sine wave generator and keyer
JPH0380730U (en)
JPS5911119B2 (en) electronic chime
JPS5471666A (en) Electronic watch
CA2022879A1 (en) Electronic piano tone circuit
HK1002413A1 (en) Radio pager tone alarm circuit for generating variable duty constant audio frequency pulses modulated with unique tone pattern
WO1997005501A3 (en) Apparatus for and method of controlling and calibrating the phase of a coherent signal

Legal Events

Date Code Title Description
EEER Examination request
MKEX Expiry

Effective date: 20140224