Electronic audio device and method of operation

Details Electronic audio device and method of operation Electronic audio device and method of operation

1995-08-14

1998-06-23

Harvey, Minsun Oh

Electrical audio signal processing systems and devices

Monitoring of sound

Amplification control responsive to ambient sound

381 96, 381108, H03G 320

Patent

active

057712972

ABSTRACT:
An electronic audio device, such as a radio having an audio loudspeaker is described, as well as a method of operation of such a device. The device has an audio stage (6) having an audio output for providing an audio output signal, an acoustic transducer (12) coupled to the audio output for outputting an acoustic signal and a microphone element (13) acoustically coupled to the acoustic transducer to provide a feedback signal representative of the output of the acoustic transducer. A comparison circuit (15) compares parameters of the audio output signal and parameters of the feedback signal; and a control circuit (16, 24, 50) responsive to the comparison circuit controls the audio stage when a parameter of the feedback signal differs from that parameter of the audio output signal by a predetermined amount.

REFERENCES:
patent: 4395588 (1983-07-01), Franssen
patent: 4628526 (1986-12-01), Germer

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