Audio record and playback through a standard telephone in a comp

Details Audio record and playback through a standard telephone in a comp Audio record and playback through a standard telephone in a comp

1997-02-18

1999-02-23

Tsang, Fan S.

Telephonic communications

Audio message storage, retrieval, or synthesis

Digital signal processing

379 9001, 37911001, 379442, H04M 164

Patent

active

058752331

ABSTRACT:
A method for performing audio input/output through a telephone in a computer system, wherein a telephony driver and an audio driver and an audio task executing on a digital signal processing subsystem of the computer system perform sound sample data conversion to a standard data format and perform sample rate conversion and stereo to mono conversion for digital telephone compatibility.

REFERENCES:
patent: 4663777 (1987-05-01), Szeto
patent: 4799144 (1989-01-01), Parruck et al.
patent: 4916726 (1990-04-01), Morley, Jr. et al.
patent: 5065425 (1991-11-01), Le comte et al.
patent: 5283819 (1994-02-01), Glick et al.
patent: 5343516 (1994-08-01), Callele et al.
"Digital Signal Processing Applications", Texas Instruments, 1986, pp. 380-382.
Bicom 4LS Digital Voice Processing System; Bicom Computer and Communications Systems, Apr. 1991.

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