Variable rate audio encoder via scalable coding and...

Details Variable rate audio encoder via scalable coding and... Variable rate audio encoder via scalable coding and...

2003-12-22

2008-11-25

Smits, Talivaldis Ivars (Department: 2626)

Data processing: speech signal processing, linguistics, language

Speech signal processing

For storage or transmission

C704S200000, C704S200100, C704S500000, C704S501000

Reexamination Certificate

active

07457742

ABSTRACT:
A maximum of Nmax bits for encoding is defined for a set of parameters which may be calculated from a signal frame. The parameters for a first sub-set are calculated and encoded with N0 bits, where N0<Nmax. The allocation of Nmax−N0 encoding bits for the parameters of a second sub-set are determined and the encoding bits allocated to the parameters for the second sub-set are classified. The allocation and/or order of classification of the encoding bits are determined as a function of the encoding parameters for the first sub-set. For a total of N available bits for the encoding of the total parameters (N0<N=Nmax), the parameters for the second sub-set allocated the N−N0 encoding bits classified the first in said order are selected. Said selected parameters are calculated and encoded to give the N−N0 bits. The N0 encoding bits for the first sub-set and the N−N0 encoding bits for the selected parameters for the second sub-set are finally introduced into the output sequence of the encoder.

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