CN102411935A

5G,4G,3G

Title

Method and apparatus of anti-sparseness filtering for wideband extension speech predication excitation signal

Application Number:

CN20111326747

Publication Date:

11-04-2012

Current Assignee:

Family ID:

Application Date:

03-04-2006

Declaring Company:

Publication Country:

US

Priority Date:

01-04-2005

Title

Method and apparatus of anti-sparseness filtering for wideband extension speech predication excitation signal

Application Number:

CN20111326747

Family ID:

Publication Country:

US

Publication Date:

11-04-2012

Application Date:

03-04-2006

Priority Date:

01-04-2005

Current Assignee:

Declaring Company:

Abstract  Abstract

This invention claims a method and device for anti-sparseness filter of bandwidth extended voice forecast excitation signal. A kind of used for generate high band excitation signal (S120) of the method and device comprises based on RGB color extension encoded low band excitation signal (S50) frequency spectrum to generating a spectrum extended signal (A400) and performing anti-sparseness filtering the signal excitation signal based on said encoded low band (600). The high band excitation signal based on the spectrum extended signal and the high frequency band excitation signal based on a result of said anti-sparseness filter.

Note:

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Explicitly disclosed patent:openly and comprehensibly describes all details of the invention in the patent document.

Implicitly disclosed patent:does not explicitly state certain aspects of the invention, but still allows for these to be inferred from the information provided.

Basis patent:The core patent in a family, outlining the fundamental invention from which related patents or applications originate.

Family member:related patents or applications that share a common priority or original filing.