公开(公告)号：US20030039368A1

公开(公告)日：2003-02-27

申请号：US10226707

申请日：2002-08-22

Applicant: Phone-Or Ltd.

Inventor： Alexander Paritsky ,  Sergei Smirnov ,  Avraham Kushnirov

IPC: H04R029/00 ,  H04R003/00

CPC classification number: H04R23/008

Abstract: A dynamic noise suppression system for an optical microphone including an optical microphone having a light source illuminating an acoustically sensitive membrane reflecting light onto a photodetector and an input and an output, a logarithmic amplifier connected to the output of the optical microphone, a variable impedance connected between the output of the amplifier and the input to the optical microphone, the variable impedance receiving control signals from the output of the amplifier, the output of the optical microphone, or an external source.

Abstract translation: 一种用于光学麦克风的动态噪声抑制系统，包括具有光源的光学麦克风，该光学麦克风将反射光的声学敏感膜照射到光电检测器上，以及输入和输出端，连接到光学麦克风的输出的对数放大器， 在放大器的输出与光学麦克风的输入之间，来自放大器的输出的可变阻抗接收控制信号，光学麦克风的输出或外部源。