Data processing: speech signal processing – linguistics – language – Speech signal processing – For storage or transmission
Reexamination Certificate
2003-09-10
2008-10-07
Lerner, Martin (Department: 2626)
Data processing: speech signal processing, linguistics, language
Speech signal processing
For storage or transmission
C704S206000, C704S221000, C370S466000
Reexamination Certificate
active
07433815
ABSTRACT:
A variable-rate voice transcoder that transcodes a bitstream representing frames of data encoded according to a first compression standard to a bitstream representing frames of data according to a second compression standard; the second compression standard defines a variable-rate voice codec. The method includes unquantizing a bitstream into a first set of parameters compatible with the first compression standard. The first set of parameters in addition to external control commands are then used to determine a frame class and a rate for the second compression standard. Next, the first set of parameters are transformed into a second set of parameters compatible with the second compression standard according to the frame-classification and rate determination decision. Lastly, the second set of parameters is packed into a bitstream compatible with the second compression standard.
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Office Action dated Nov. 7, 2007 for U.S. Appl. No. 10/642,422.
Chong-White Nicola
Jabri Marwan A.
Wang Jianwei
Dilithium Networks Pty Ltd.
Lerner Martin
Townsend and Townsend & Crew LLP
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