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Machine translation
1. (WO1980001529) MULTIPLE PROGRAM AUDIO SYSTEM
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1980/001529    International Application No.:    PCT/US1980/000033
Publication Date: 24.07.1980 International Filing Date: 16.01.1980
IPC:
H03G 3/34 (2006.01), H04R 27/00 (2006.01), H04R 3/00 (2006.01)
Applicants:
Inventors:
Priority Data:
4195 17.01.1979 US
Title (EN) MULTIPLE PROGRAM AUDIO SYSTEM
(FR) SYSTEME AUDIO A PROGRAMME MULTIPLE
Abstract: front page image
(EN)A multiple source input amplifying and activation system including one first microphone (M1) to generate a first source input signal and a second microphone (M2) to generate a second input signal, an input channel for each microphone where the input channel includes an amplifier (33, 37) to provide a full wave rectified direct current signal of selected polarity in each channel responsive to the input signal. Control summer (36) to receive the direct current input signals from each channel and provide a reference signal proportionate to the sum of the input signals, comparator (37) in each input channel to receive and compare the reference signal with the signal generated by the channel and having an output to provide a control signal in response to the ratio, and each channel including an amplifier (28) operable by the control signal to selectively transmit the program signal to a program summer (13), and an attenuator (12) attenuates the output signal from the program summer (20) in response to the number of signals received from the input channel comparators.
(FR)Un systeme d"activation et d"amplification d"entree a source multiple comprenant un premier microphone (M1) pour produire un premier signal d"entree de source et un second microphone (M2) pour produire un second signal d"entree, un canal d"entree pour chaque microphone ou le canal d"entree comprend un amplificateur (33, 37) pour donner un signal de courant continu a redressement biphase de polarite selectionnee dans chaque canal en reponse au signal d"entree. Un additionneur de commande (36) recoit les signaux d"entree de courant continu de chaque canal et produit un signal de reference proportionnel a la somme des signaux d"entree, un comparateur (37) dans chaque canal d"entree recoit et compare le signal de reference avec le signal produit par le canal et possede une sortie pour fournir un signal de commande en reponse au rapport, et chaque canal comprend un amplificateur (28) pouvant fonctionner sous l"effet du signal de commande pour transmettre de maniere selective le signal de programme a un additionneur de programme (13), et un attenuateur (12) attenue le signal de sortie provenant de l"additionneur de programme (20) en reponse au nombre de signaux recus des comparateurs des canaux d"entree.
Designated States:
Publication Language: English (EN)
Filing Language: English (EN)