Apparatus and method for adjusting audio equipment in acoustic e

Details Apparatus and method for adjusting audio equipment in acoustic e Apparatus and method for adjusting audio equipment in acoustic e

1998-07-02

2000-08-29

Isen, Forester W.

Electrical audio signal processing systems and devices

Binaural and stereophonic

Broadcast or multiplex stereo

381 56, 381 58, 381103, H04H 500, H04R 2900

Patent

active

061119571

ABSTRACT:
The signal in each channel of a stereo is modulated at an inaudible frequency by a replica of the original signal. The modulated signal is broadcast into a room by a loudspeaker and is picked up by a microphone. The microphone is coupled to the stereo, which includes a demodulator for separating the replica from the signal as received at the microphone. By comparing the replica with the demodulated signal, data is extracted to compensate for the acoustic characteristics of the loudspeaker and the room in which the loudspeaker is located.

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