Transmitter and receiver for speech coding and decoding by...

Details Transmitter and receiver for speech coding and decoding by... Transmitter and receiver for speech coding and decoding by...

2003-06-26

2008-03-18

Hudspeth, David (Department: 2626)

Data processing: speech signal processing, linguistics, language

Speech signal processing

For storage or transmission

C704S201000

Reexamination Certificate

active

07346503

ABSTRACT:
The present invention relates to a transmitter and a receiver for speech coding and decoding by using an additional bit allocation method. The transmitter and the receiver according to the present invention realize a voice communication service of high quality by using additional bits permitted in system requirements while using a conventional speech coder as it is. In addition, the transmitter and the receiver according to the present invention have an advantage in that they enable insertion of additional quantization blocks while not changing the structure of the conventional standard speech coder, since they allocate additional bits by applying a multi-stage quantization procedure not in a speech signal domain but in a parameter domain.

REFERENCES:
patent: 5937378 (1999-08-01), Serizawa
patent: 6377916 (2002-04-01), Hardwick
patent: 6658378 (2003-12-01), Maeda
patent: 7047186 (2006-05-01), Oishi
patent: 2005/0171770 (2005-08-01), Yamaura
Sean A. Ramprashad, “A Two Stage Hybrid Embedded Speech/Audio Coding Structure”, 0-7803-4428-6/98, 1998 IEEE, pp. 337-340.

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