GB871994A - Improvements relating to stereophonic sound transmission systems - Google Patents

Improvements relating to stereophonic sound transmission systems

Info

Publication number
GB871994A
GB871994A GB4105659A GB4105659A GB871994A GB 871994 A GB871994 A GB 871994A GB 4105659 A GB4105659 A GB 4105659A GB 4105659 A GB4105659 A GB 4105659A GB 871994 A GB871994 A GB 871994A
Authority
GB
United Kingdom
Prior art keywords
sounds
signal
transmission systems
representative
stereophonic sound
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
GB4105659A
Inventor
William Spencer Percival
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.)
EMI Ltd
Electrical and Musical Industries Ltd
Original Assignee
EMI Ltd
Electrical and Musical Industries Ltd
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 EMI Ltd, Electrical and Musical Industries Ltd filed Critical EMI Ltd
Priority to GB4105659A priority Critical patent/GB871994A/en
Priority to DEE19799A priority patent/DE1110229B/en
Publication of GB871994A publication Critical patent/GB871994A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S1/00—Two-channel systems

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Stereophonic System (AREA)
  • Circuit For Audible Band Transducer (AREA)

Abstract

871,994. Stereophonic transmission systems. ELECTRIC & MUSICAL INDUSTRIES Ltd. Oct. 4, 1957 [July 6, 1957], No. 41056/59. Divided out of 21465/57 and 871,992. Drawings to Specification. Class 40 (4). In a stereophonic sound reproducing apparatus, for use in a transmission system as described in Specification 871,992 in which there is transmitted an audio-frequency signal representative of sounds and a control signal which is representative of the directions or positions of the sources of the sounds and is substantially independent of the loudness of the sounds, two further signals representative of the sounds as received from different directions or at different positions are derived by multiplying the audiofrequency signal by the control signal to obtain one further signal and subtracting this further signal from the audio-frequency signal to obtain the other, and the two further signals are fed respectively to two spaced loud-speakers. The description is identical with that of Specification 871,992 which relates to Fig. 3 thereof.
GB4105659A 1957-07-06 1957-07-06 Improvements relating to stereophonic sound transmission systems Expired GB871994A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB4105659A GB871994A (en) 1957-07-06 1957-07-06 Improvements relating to stereophonic sound transmission systems
DEE19799A DE1110229B (en) 1957-07-06 1957-10-11 Playback device for stereophonic sound transmission

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4105659A GB871994A (en) 1957-07-06 1957-07-06 Improvements relating to stereophonic sound transmission systems

Publications (1)

Publication Number Publication Date
GB871994A true GB871994A (en) 1961-07-05

Family

ID=10417905

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4105659A Expired GB871994A (en) 1957-07-06 1957-07-06 Improvements relating to stereophonic sound transmission systems

Country Status (2)

Country Link
DE (1) DE1110229B (en)
GB (1) GB871994A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010125426A1 (en) * 2009-04-30 2010-11-04 Idealec Bus bar arrangement

Also Published As

Publication number Publication date
DE1110229B (en) 1961-07-06

Similar Documents

Publication Publication Date Title
GB1505329A (en) Apparatus for wireless transmission of audio-frequency signals
GB871994A (en) Improvements relating to stereophonic sound transmission systems
GB817773A (en) Improvements in or relating to sound transmitting apparatus
JPS5441102A (en) Signal converting circuit
GB931280A (en) Improvements relating to stereophonic sound transmitting systems
GB1006902A (en) Reverberatory amplifiers
JPS5324802A (en) Multi-channel stereophonic reproducing system
GB927252A (en) Improvements relating to stereophonic reproducers
GB1307074A (en) Automatic volume control system for multichannel amplifier
JPS51121238A (en) An audio-signal amplifying system
JPS5211002A (en) Headphone system
GB826737A (en) Improvements relating to apparatus for reproducing sound
JPS53138301A (en) Growing system of 4-channel stereophonic signal
JPS52126102A (en) Transmission and reception system of fm stereo
JPS5239301A (en) Transmission system for different type program signal
GB987315A (en) Improvements in or relating to audio frequency amplifying circuit arrangements
JPS53134401A (en) Acoustic reproducing system
GB1414260A (en) Process and apparatus for quadraphonic transmission
GB932738A (en) Improvements in or relating to sound reproduction apparatus
JPS547901A (en) Acoustic system
CA540307A (en) Transmission system for stereophonic signals and transmitters and receivers for use in such systems
CA540306A (en) Transmission system for stereophonic signals and transmitters and receivers for use in such systems
JPS5393817A (en) Acoustic diaphragm
JPS53135302A (en) 4-channel stereophonic reproduction system by 2-channeled 4-chanel stereo phonic signals
GB854639A (en) Improvements in or relating to binaural or stereophonic transmission systems