Gain quantization system for speech coding to improve packet...

Details Gain quantization system for speech coding to improve packet... Gain quantization system for speech coding to improve packet...

2011-08-16

2011-08-16

Jackson, Jakieda (Department: 2626)

Data processing: speech signal processing, linguistics, language

Speech signal processing

For storage or transmission

Reexamination Certificate

active

08000961

ABSTRACT:
In order to recover the excitation energy quickly and keep the adaptive excitation contribution percentage in the entire excitation after bit-stream packet loss, the two excitation gains (Gp305and Gc306) can be first transformed into the two other special parameters: one is the entire excitation energy and another is the energy ratio of the adaptive excitation contribution portion relative to the entire excitation energy. Then, the transformed parameters are quantized and sent to decoder. At the decoder side, the quantized parameters are transformed back to the original form of the gains (Gp305and Gc306).

REFERENCES:
patent: 7707034 (2010-04-01), Sun et al.
patent: 2004/0204935 (2004-10-01), Anandakumar et al.
patent: 2005/0060143 (2005-03-01), Ehara
patent: 2006/0271357 (2006-11-01), Wang et al.

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