IT1013490B - IMPROVEMENT IN MULTI-CHANNEL COMMAND AND CONTROL CIRCUITS IN PARTICULAR FOR RADIO OR AUDIO SYSTEMS - Google Patents

IMPROVEMENT IN MULTI-CHANNEL COMMAND AND CONTROL CIRCUITS IN PARTICULAR FOR RADIO OR AUDIO SYSTEMS

Info

Publication number
IT1013490B
IT1013490B IT51554/74A IT5155474A IT1013490B IT 1013490 B IT1013490 B IT 1013490B IT 51554/74 A IT51554/74 A IT 51554/74A IT 5155474 A IT5155474 A IT 5155474A IT 1013490 B IT1013490 B IT 1013490B
Authority
IT
Italy
Prior art keywords
radio
improvement
control circuits
audio systems
channel command
Prior art date
Application number
IT51554/74A
Other languages
Italian (it)
Original Assignee
Motorola 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 Motorola Inc filed Critical Motorola Inc
Application granted granted Critical
Publication of IT1013490B publication Critical patent/IT1013490B/en

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G5/00—Tone control or bandwidth control in amplifiers
    • H03G5/02—Manually-operated control
    • H03G5/04—Manually-operated control in untuned amplifiers
    • H03G5/10—Manually-operated control in untuned amplifiers having semiconductor devices
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/02—Manually-operated control
    • H03G3/04—Manually-operated control in untuned amplifiers
    • H03G3/10—Manually-operated control in untuned amplifiers having semiconductor devices
    • 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
IT51554/74A 1973-06-19 1974-06-17 IMPROVEMENT IN MULTI-CHANNEL COMMAND AND CONTROL CIRCUITS IN PARTICULAR FOR RADIO OR AUDIO SYSTEMS IT1013490B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US371437A US3875334A (en) 1973-06-19 1973-06-19 Multi-channel control circuit with D-C operated control devices

Publications (1)

Publication Number Publication Date
IT1013490B true IT1013490B (en) 1977-03-30

Family

ID=23463996

Family Applications (1)

Application Number Title Priority Date Filing Date
IT51554/74A IT1013490B (en) 1973-06-19 1974-06-17 IMPROVEMENT IN MULTI-CHANNEL COMMAND AND CONTROL CIRCUITS IN PARTICULAR FOR RADIO OR AUDIO SYSTEMS

Country Status (7)

Country Link
US (1) US3875334A (en)
JP (1) JPS5840367B2 (en)
CA (1) CA998619A (en)
DE (1) DE2429242A1 (en)
GB (1) GB1461145A (en)
HK (1) HK73779A (en)
IT (1) IT1013490B (en)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3937885A (en) * 1974-09-06 1976-02-10 Motorola, Inc. Control circuit for a matrixed four channel audio reproducing system
JPS5234649U (en) * 1975-09-03 1977-03-11
JPS5265644A (en) * 1975-11-26 1977-05-31 Matsushita Electric Ind Co Ltd Volume control circuit
US4045748A (en) * 1975-12-19 1977-08-30 The Magnavox Company Audio control system
JPS5313860A (en) * 1976-07-23 1978-02-07 Pioneer Electronic Corp Tone control device
US4113984A (en) * 1976-09-17 1978-09-12 General Motors Corporation Voltage translating circuit for volume and balance control of a four-channel audio system
US4076959A (en) * 1976-10-08 1978-02-28 General Motors Corporation Volume, tone and balance control for multi-channel audio systems
JPS5383553A (en) * 1976-12-29 1978-07-24 Matsushita Electric Ind Co Ltd Aural circuit
US4070633A (en) * 1977-03-10 1978-01-24 Motorola Inc. Remote controlled amplifier
JPS5760714A (en) * 1980-09-29 1982-04-12 Toshiba Corp Adjusting device for frequency characteristic
US4404527A (en) * 1980-11-03 1983-09-13 General Motors Corporation Bridge audio amplifier including low level fade control
FR2501935B1 (en) * 1981-03-13 1985-09-13 Thomson Csf VOLUME AND TONE CONTROL CIRCUIT INCORPORATING PHYSIOLOGICAL CORRECTION WITHOUT ADDITIONAL FILTER
US4466118A (en) * 1983-02-01 1984-08-14 Motorola, Inc. Dual range audio level control
JPS6022265U (en) * 1983-07-25 1985-02-15 株式会社　ジエ−アンドエム driver
DE3627056A1 (en) * 1986-08-09 1988-02-18 Thomson Brandt Gmbh Circuit for dynamic compression or expansion in a useful-signal path
CH686753A5 (en) * 1993-07-19 1996-06-14 Yair Dr Schiftan Electronic device for generating acoustic raeuumlichen effects.
EP1240805B1 (en) * 1999-12-22 2004-06-09 2+2+2 Ag Method and arrangement for recording and playing back sounds
JP2002142300A (en) * 2000-11-06 2002-05-17 Pioneer Electronic Corp Sound field forming circuit and sound field forming system
US8411877B2 (en) * 2009-10-13 2013-04-02 Conexant Systems, Inc. Tuning and DAC selection of high-pass filters for audio codecs
JP5327481B2 (en) * 2011-01-13 2013-10-30 オンキヨー株式会社 Tone control device

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3466572A (en) * 1965-10-14 1969-09-09 Automatic Elect Lab Apparatus for regulating signals in response to their total root mean square value
US3631365A (en) * 1968-11-01 1971-12-28 Dolby Laboratories Inc Signal compressors and expanders
US3769459A (en) * 1970-07-20 1973-10-30 Motorola Inc Volume and tone control for multi-channel audio systems
US3752928A (en) * 1971-03-04 1973-08-14 D Flickinger Amplifier system utilizing regenerative and degenerative feedback to shape the frequency response
DE2262089C3 (en) * 1972-12-19 1975-10-30 Philips Patentverwaltung Gmbh, 2000 Hamburg Circuit arrangement for electronic frequency influencing, in particular electronic sound adjuster

Also Published As

Publication number Publication date
JPS5037401A (en) 1975-04-08
DE2429242A1 (en) 1975-01-16
GB1461145A (en) 1977-01-13
HK73779A (en) 1979-10-26
CA998619A (en) 1976-10-19
US3875334A (en) 1975-04-01
JPS5840367B2 (en) 1983-09-05

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