Determination of position

Details Determination of position Determination of position

1994-07-07

1997-02-04

Isen, Forester W.

Electrical audio signal processing systems and devices

Binaural and stereophonic

Stereo sound pickup device

381 92, 381122, H04R 5027, H04R 300

Patent

active

056007272

ABSTRACT:
An autocalibration system includes two loudspeakers (2, 4) spaced from three microphones (16, 18, 20). Acoustic transient pulses are emitted by each loudspeaker (2, 4) in turn and from the reception of of these pulses by each of the microphones (16, 18, 20), the time-of-flight for each pulse to each microphone may be derived. From these time-of-flight measurements are also derived the distance and angular displacement of each microphone (16, 18, 20) from a reference point (12) flanked by the loudspeakers (2, 4).

REFERENCES:
patent: 4119798 (1978-10-01), Iwahara
patent: 4586195 (1986-04-01), DeGeorge et al.
patent: 4733355 (1988-03-01), Davidson et al.
patent: 4796726 (1989-01-01), Kobayashi et al.
patent: 5206838 (1993-04-01), Kashiwase

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