Linking in parametric encoding

Details Linking in parametric encoding Linking in parametric encoding

2006-08-01

2006-08-01

Harper, V. Paul (Department: 2654)

Data processing: speech signal processing, linguistics, language

Audio signal bandwidth compression or expansion

C704S265000, C704S211000, C704S221000

Reexamination Certificate

active

07085724

ABSTRACT:
The invention relates to a linking unit100, a parametric encoder400and a method for generating linking information L indicating components of consecutive extended segments sp and sc which may be linked together in order to form a sinusoidal track. The segments sp and sc approximate consecutive segments of a sinusoidal audio or speech signal s. The linking unit comprises a calculating unit120for generating a similarity matrix S(m,n) in response to received sinusoidal code data and an evaluating unit140for receiving and evaluating said similarity matrix S in order to generate said linking information by selecting those pairs of components m,n the similarity of which is maximal. According to the invention the calculating unit120is adapted to calculate the similarity matrix S by additionally considering information about the phase consistency between the components of the extended previous segment sp and the extended current segment sc. In that way the selection of components suitable for being linked together is improved resulting in the definition of correct tracks.

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