GB852285A - Improvements in or relating to binaural or stereophonic sound transmission systems - Google Patents

Improvements in or relating to binaural or stereophonic sound transmission systems

Info

Publication number
GB852285A
GB852285A GB38392/56A GB3839256A GB852285A GB 852285 A GB852285 A GB 852285A GB 38392/56 A GB38392/56 A GB 38392/56A GB 3839256 A GB3839256 A GB 3839256A GB 852285 A GB852285 A GB 852285A
Authority
GB
United Kingdom
Prior art keywords
outputs
channel
feed
channels
microphones
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
GB38392/56A
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.)
Telefunken AG
Original Assignee
Telefunken AG
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 Telefunken AG filed Critical Telefunken AG
Publication of GB852285A publication Critical patent/GB852285A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S3/00—Systems employing more than two channels, e.g. quadraphonic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R5/00—Stereophonic arrangements
    • H04R5/027—Spatial or constructional arrangements of microphones, e.g. in dummy heads
    • 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
    • H04S2400/01—Multi-channel, i.e. more than two input channels, sound reproduction with two speakers wherein the multi-channel information is substantially preserved
    • 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
    • H04S2400/05—Generation or adaptation of centre channel in multi-channel audio systems

Abstract

852,285. Binaural systems. TELEFUNKEN G.m.b.H. Dec. 17, 1956 [Dec. 16, 1955], No. 38392/56. Class 40 (4). The outputs of two spaced microphones are added and differenced, the resulting signals being fed over separate transmission channels to a circuit where the original signals are reproduced. A non-directional microphone may feed one of the channels in an additive sense. The outputs of microphones M and M 1- M4, Fig. 1, are added and applied to transmission channel I. The outputs of M2 and M4 are phase reversed at U2 and U4 before combination with the outputs of M1 and M3 in a second transmission channel II. Channels I and II are combined to feed loudspeaker I. Channel II includes a further phase-reverser UE before combination with channel I to feed loud-speaker L2. M3 and M4 have their outputs attenuated at D3 and D4 to a varying extent so that the effective position of the sound source can be varied. In Fig. 3 all the microphone circuits in channel II have variable attenuators, the potentiometer being varied according to whether the effective source of the sound is to be to the right or left of the centre line. Two microphones placed close together having a spherical and a polar response, respectively, may also be included in the system.
GB38392/56A 1955-12-16 1956-12-17 Improvements in or relating to binaural or stereophonic sound transmission systems Expired GB852285A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE852285X 1955-12-16

Publications (1)

Publication Number Publication Date
GB852285A true GB852285A (en) 1960-10-26

Family

ID=6784010

Family Applications (1)

Application Number Title Priority Date Filing Date
GB38392/56A Expired GB852285A (en) 1955-12-16 1956-12-17 Improvements in or relating to binaural or stereophonic sound transmission systems

Country Status (1)

Country Link
GB (1) GB852285A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4704728A (en) * 1984-12-31 1987-11-03 Peter Scheiber Signal re-distribution, decoding and processing in accordance with amplitude, phase, and other characteristics

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4704728A (en) * 1984-12-31 1987-11-03 Peter Scheiber Signal re-distribution, decoding and processing in accordance with amplitude, phase, and other characteristics

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