Parametric coding of an audio or speech signal

Details Parametric coding of an audio or speech signal Parametric coding of an audio or speech signal

2006-05-23

2006-05-23

Dorvil, Richemond (Department: 2654)

Data processing: speech signal processing, linguistics, language

Speech signal processing

For storage or transmission

C704S254000, C704S500000

Reexamination Certificate

active

07050970

ABSTRACT:
An encoder includes a segmentation unit for segmenting an audio or speech signal into at least one segment and a calculation unit for calculating sinusoidal code data in the form of frequency and amplitude data of a given extension from the segment such that the extension approximates the segment for a given criterion. The calculation of the sinusoidal code data θki, djiand ejifor the segment x(n) is carried out according to the following extension {circumflex over (x)}:x⋒=∑i=1L⁢⁢∑j=0J-1⁢⁢[dji⁢fj⁡(n)⁢cos⁡(Θi⁡(n))+eji⁢fj⁡(n)⁢sin(Θi⁡(n)].Fig.⁢1.

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