Telephone network speech signal enhancement

Telephonic communications – Subscriber line or transmission line interface – Network interface device

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Details

379414, 379400, 379409, H04M 176

Patent

active

053331958

ABSTRACT:
The quality of voice signals transmitted by a telephone station set, or similar device, are enhanced in accordance with the steps of the instant method before such signals are delivered to a receiving telephone station set by restoring the level of speech energy attenuated by the transmitting set, in which such restoration is performed at a point along a telephone connection between the transmitting and receiving telephone stations, for example, at a point within a telecommunications system which establishes the connection.

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patent: 4809338 (1989-02-01), House
patent: 5195132 (1993-03-01), Banker et al.
Hobby Electronics, Mar. 1982, vol. 4, No. 3, "Stereo Bass Booster", pp. 52-54, Author unknown.

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