GB1317530A - Volume and balance control for four channel sound system - Google Patents

Volume and balance control for four channel sound system

Info

Publication number
GB1317530A
GB1317530A GB5357271A GB5357271A GB1317530A GB 1317530 A GB1317530 A GB 1317530A GB 5357271 A GB5357271 A GB 5357271A GB 5357271 A GB5357271 A GB 5357271A GB 1317530 A GB1317530 A GB 1317530A
Authority
GB
United Kingdom
Prior art keywords
controls
volume
channels
pair
potentiometer
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
GB5357271A
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.)
Motorola Solutions Inc
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
Publication of GB1317530A publication Critical patent/GB1317530A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G1/00—Details of arrangements for controlling amplification
    • H03G1/0005—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal
    • H03G1/0035—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal using continuously variable impedance elements
    • H03G1/0082—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal using continuously variable impedance elements using bipolar transistor-type devices
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers without distortion of the input signal
    • H03G3/02—Manually-operated control
    • H03G3/04—Manually-operated control in untuned amplifiers
    • 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
    • H04S7/302—Electronic adaptation of stereophonic sound system to listener position or orientation
    • 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 
    • H04S2400/00—Details of stereophonic systems covered by H04S but not provided for in its groups
    • H04S2400/13—Aspects of volume control, not necessarily automatic, in stereophonic sound systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S3/00—Systems employing more than two channels, e.g. quadraphonic

Abstract

1317530 Stereo circuit volume control MOTOROLA Inc 18 Nov 1971 [22 Dec 1970] 53572/71 Heading H4R In a four channel system, e.g. for an automobile multi track tape player system, D.C. control signal for controlling the respective volume levels in each of the channels are derived from potentiometers 52, 62, and 64. Potentiometer 52 controls the level of one pair of channels, e.g. the left front and left rear, relative the other pair of channels, e.g. the right front and right rear. Potentiometer 62 controls the volume level of one channel in each pair, e.g. the left front and right front, relative the other channel in each pair, e.g. the left rear and right rear. Potentiometer 64 controls the overall level of the sound from all channels, with the arrangement such that operation of the balance controls 52 and 62 has no effect on the total volume while operation of volume control 64 does not effect balance. The control signals are applied to the bases of respective transistors 44-50 connected as shunt elements of potentiometers in the signal path. The balance potentiometers are preferably lever operated controls with the levers moving in respective planes at right angles.
GB5357271A 1970-12-22 1971-11-18 Volume and balance control for four channel sound system Expired GB1317530A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US10057970A 1970-12-22 1970-12-22

Publications (1)

Publication Number Publication Date
GB1317530A true GB1317530A (en) 1973-05-23

Family

ID=22280472

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5357271A Expired GB1317530A (en) 1970-12-22 1971-11-18 Volume and balance control for four channel sound system

Country Status (6)

Country Link
US (1) US3702901A (en)
JP (1) JPS512585Y2 (en)
CA (1) CA941310A (en)
DE (1) DE2161474A1 (en)
GB (1) GB1317530A (en)
IT (1) IT953204B (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3879747A (en) * 1968-12-04 1975-04-22 Matsushita Electric Ind Co Ltd Remote control device
US3937885A (en) * 1974-09-06 1976-02-10 Motorola, Inc. Control circuit for a matrixed four channel audio reproducing system
JPS5226144A (en) * 1975-08-22 1977-02-26 Shinshirasuna Denki Kk Automatic gain control circuit
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
US4245136A (en) * 1980-08-08 1981-01-13 Krauel Jr Robert W Monitor ampliphones
US4404527A (en) * 1980-11-03 1983-09-13 General Motors Corporation Bridge audio amplifier including low level fade control
US4404429A (en) * 1981-05-07 1983-09-13 Rca Corporation Matching volume control characteristics for two channels
US4521906A (en) * 1983-03-28 1985-06-04 Kahn Leonard R Speaker systems for producing balanced stereo images at multiple locations
JP2514141Y2 (en) * 1984-05-31 1996-10-16 パイオニア株式会社 In-vehicle sound field correction device
DE3427000A1 (en) * 1984-07-21 1986-01-30 Philips Patentverwaltung FADER CIRCUIT DEVICE ON ELECTRICAL PLAYBACK DEVICES AND FADER CONTROLLER FOR SUCH A CIRCUIT DEVICE
JPH0236698A (en) * 1988-07-26 1990-02-06 Mazda Motor Corp On-vehicle audio equipment
US5122720A (en) * 1989-12-01 1992-06-16 Martinsound Technologies, Inc. Automated fader system
JP2002152900A (en) * 2000-11-09 2002-05-24 Pioneer Electronic Corp Sound volume controller
US20050185806A1 (en) * 2003-02-14 2005-08-25 Salvador Eduardo T. Controlling fading and surround signal level
US7305097B2 (en) * 2003-02-14 2007-12-04 Bose Corporation Controlling fading and surround signal level
US20060280316A1 (en) * 2005-06-09 2006-12-14 Lear Corporation Audio system and method for controlling an audio system
WO2008006376A1 (en) * 2006-07-13 2008-01-17 Bang & Olufsen A/S A method, apparatus, and system for spatial redistribution of direct and ambient sound.

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2899505A (en) * 1959-08-11 Re-recording mixer for multi-sound track records
US2148030A (en) * 1936-07-25 1939-02-21 Rca Corp Automatic tone control system
US2488410A (en) * 1945-01-26 1949-11-15 Rca Corp Control circuits for alternating current transmission networks
US2474191A (en) * 1947-06-06 1949-06-21 Avco Mfg Corp Tone control
US3397286A (en) * 1964-09-17 1968-08-13 Gen Motors Corp Four-speaker adjustable stereo sound system

Also Published As

Publication number Publication date
US3702901A (en) 1972-11-14
JPS471120U (en) 1972-08-11
DE2161474A1 (en) 1972-07-13
IT953204B (en) 1973-08-10
CA941310A (en) 1974-02-05
JPS512585Y2 (en) 1976-01-26

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee