High fidelity speech encoding for telecommunications systems

Details High fidelity speech encoding for telecommunications systems High fidelity speech encoding for telecommunications systems

1991-02-08

1993-07-13

Dwyer, James L.

Telephonic communications

Telephone line or system combined with diverse electrical...

Having transmission of a digital message signal over a...

379387, H04M 1100

Patent

active

052280764

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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