CA1007989A - Sound communication system - Google Patents

Sound communication system

Info

Publication number
CA1007989A
CA1007989A CA206,122A CA206122A CA1007989A CA 1007989 A CA1007989 A CA 1007989A CA 206122 A CA206122 A CA 206122A CA 1007989 A CA1007989 A CA 1007989A
Authority
CA
Canada
Prior art keywords
communication system
sound communication
sound
communication
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.)
Expired
Application number
CA206,122A
Other versions
CA206122S (en
Inventor
Gordon S. Carroll
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.)
ITT Inc
Original Assignee
ITT Industries 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 ITT Industries Inc filed Critical ITT Industries Inc
Application granted granted Critical
Publication of CA1007989A publication Critical patent/CA1007989A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
    • B06B1/0207—Driving circuits
    • B06B1/0223—Driving circuits for generating signals continuous in time
    • B06B1/0269—Driving circuits for generating signals continuous in time for generating multiple frequencies
    • B06B1/0284—Driving circuits for generating signals continuous in time for generating multiple frequencies with consecutive, i.e. sequential generation, e.g. with frequency sweep
CA206,122A 1973-08-02 1974-08-01 Sound communication system Expired CA1007989A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US384889A US3882275A (en) 1973-08-02 1973-08-02 Sound communication system

Publications (1)

Publication Number Publication Date
CA1007989A true CA1007989A (en) 1977-04-05

Family

ID=23519174

Family Applications (1)

Application Number Title Priority Date Filing Date
CA206,122A Expired CA1007989A (en) 1973-08-02 1974-08-01 Sound communication system

Country Status (6)

Country Link
US (1) US3882275A (en)
JP (1) JPS5051288A (en)
CA (1) CA1007989A (en)
DE (1) DE2436693A1 (en)
GB (1) GB1476125A (en)
IT (1) IT1017707B (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4065767A (en) * 1976-09-01 1977-12-27 General Signal Corporation Programmable electronic siren
US4206448A (en) * 1977-12-19 1980-06-03 Davis Curtis H Multiple mode sound generator
US4204200A (en) * 1978-10-11 1980-05-20 Traintronics, Inc. Electronic horn arrangement
FR2552913A1 (en) * 1983-09-29 1985-04-05 Guterman Charles Miniature electronic siren programmable in siren or in word mode
JPS60166895U (en) * 1984-04-11 1985-11-06 パイオニア株式会社 Automotive audio equipment
GB2164523B (en) * 1984-09-15 1988-07-06 Crystalate Electronics Electronic alarm sounder
US4736432A (en) * 1985-12-09 1988-04-05 Motorola Inc. Electronic siren audio notch filter for transmitters
US5317641A (en) * 1991-04-11 1994-05-31 Sony Electronics Inc. Fader depth control apparatus
AUPM282493A0 (en) * 1993-12-06 1994-01-06 Robert Bosch (Australia) Proprietary Ltd. A siren unit
IT238434Y1 (en) * 1997-11-26 2000-11-13 Meta System Spa MULTIFUNCTION ELECTRONIC SIREN FOR MOBILE VEHICLES
US20010026623A1 (en) * 2000-10-17 2001-10-04 Erwin Duane A. Remote Broadcasting System
US20080272649A1 (en) * 2003-10-31 2008-11-06 Johnson Controls Technology Company Electrical connectivity system for use in a vehicle

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2396422A (en) * 1942-04-30 1946-03-12 Westinghouse Air Brake Co Air raid warning system
US2358630A (en) * 1943-04-21 1944-09-19 Gen Electric Amplification system
US3051944A (en) * 1958-08-25 1962-08-28 Auto Electronics Inc Electronic siren and communication apparatus
US3014199A (en) * 1960-04-11 1961-12-19 Leslie G Dill Siren actuated warning device for automobiles
US3130396A (en) * 1961-09-06 1964-04-21 Hughes Automatic civil emergency warning system
JPS436523Y1 (en) * 1964-12-10 1968-03-23
JPS4312352Y1 (en) * 1965-02-12 1968-05-28
JPS4316007Y1 (en) * 1967-08-16 1968-07-04

Also Published As

Publication number Publication date
JPS5051288A (en) 1975-05-08
GB1476125A (en) 1977-06-10
DE2436693A1 (en) 1975-02-13
IT1017707B (en) 1977-08-10
US3882275A (en) 1975-05-06

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