High fidelity speech encoding for telecommunications systems
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United States of America Patent
Stats
-
Jul 13, 1993
Issued Date -
N/A
app pub date -
Feb 8, 1991
filing date -
Jun 12, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A user-orientated telephone instrument including high-fidelity speech encoding, encryption capability and many function presently provided by centralized call processing is described. Utilizing an ADPCM encoding process including forward error correction, a high quality relatively noise immune signal is provided. To the user, the instrument appears as a unique electronic telephone which offers many special services to facilitate communications with other people and with computers. Advanced features such as optional hands-off voice on/off-hook control, personal identification by voice print and remote chart presentation are provided.
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Family
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