04815134 is referenced by 55 patents and cites 4 patents.

A speech encoder is disclosed quantizing speech information with respect to energy, voicing and pitch parameters to provide a fixed number of bits per block of frames. Coding of the parameters takes place for each N frames, which comprise a block, irrespective of phonemic boundaries. Certain frames of speech information are discarded during transmission, if such information is substantially duplicated in an adjacent frame. A very low data rate transmission system is thus provided which exhibits a high degree of fidelity and throughput.

Title
Very low rate speech encoder and decoder
Application Number
7/94162
Publication Number
4815134
Application Date
September 8, 1987
Publication Date
March 21, 1989
Inventor
George R Doddington
Richardson
TX, US
Joseph W Picone
Richardson
TX, US
Agent
Melvin Sharp
N Rhys Merrett
William E Hiller
Assignee
Texas Instruments Incorporated
TX, US
IPC
G10L 3/02
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