Variable bitrate speech transmission system

Details Variable bitrate speech transmission system Variable bitrate speech transmission system

1998-03-31

2000-01-04

Hudspeth, David R.

Data processing: speech signal processing, linguistics, language

Speech signal processing

For storage or transmission

704207, 704209, 704214, 704219, G10L 914

Patent

active

060120266

ABSTRACT:
A transmission system with a transmitter and a receiver. The transmitter has a speech encoder with analysis means, has calculation means, and has control means. The receiver has a speech decoder. Through a transmission medium, the transmitter transmits frames of data to the receiver. The analysis means determine analysis coefficients from a speech signal. From a bitrate setting, the calculation means calculate a fraction of the frames of data to carry more information about the analysis coefficients than a remaining number of the frames of data. The control means control the transmitter to transmit the fraction of the frames of data and to transmit the remaining number of the frames of data. The receiver receives the frames of data. The receiver derives a reconstructed speech signal from the received frames of data.

REFERENCES:
patent: 4379949 (1983-04-01), Chen et al.
patent: 5414796 (1995-05-01), Jacobs et al.
patent: 5651091 (1997-07-01), Chen
patent: 5745871 (1998-04-01), Chen
patent: 5777992 (1998-07-01), Lokoff
patent: 5878387 (1999-03-01), Oshikiri et al.

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