Intelligent acoustic systems peripheral

Details Intelligent acoustic systems peripheral Intelligent acoustic systems peripheral

1996-10-04

1998-06-09

Ramirez, Ellis B.

Boots, shoes, and leggings

G06F 1700

Patent

active

057645124

ABSTRACT:
A personal computer (PC) incorporates a speaker/microphone peripheral, which includes a digital-signal-processor (DSP) based acoustic echo canceler and supports a plurality of modes of operation. One mode is a video/telecommunications mode. In this mode, the acoustic echo canceler is enabled and the speaker/microphone peripheral provides a monaural dual speaker and microphone for use in video, internet telephony, etc., communications. Another mode of operation is a multi-media, or wide-band stereo, mode. In this multi-media mode, the acoustic echo canceler is disabled and the stereo loudspeakers provides high fidelity stereo output signals. In addition, in this latter arrangement an optional sub-woofer may be additionally coupled to the stereo loudspeakers. The speaker/microphone peripheral switches between the operating modes by detecting a predefined sequence of dual-tone-multi-frequency (DTMF) digits. The DTMF sequences are played from wave-type files stored on the PC.

REFERENCES:
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patent: 5131032 (1992-07-01), Esaki et al.
patent: 5513129 (1996-04-01), Bolas et al.
patent: 5524059 (1996-06-01), Zurcher
patent: 5533121 (1996-07-01), Suzuki et al.
patent: 5631958 (1997-05-01), Reese et al.
patent: 5661813 (1997-08-01), Shimauchi et al.
Woodworth et al.; "An Integrated Multimedia Terminal for Teleconferencing" IEEE Telecom. Conf., 1993.

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