CA2602806C

5G,4G,3G

Title

METHODS AND APPARATUS FOR ENCODING AND DECODING AN HIGHBAND PORTION OF A SPEECH SIGNAL

Application Number:

CA20062602806

Publication Date:

31-05-2011

Current Assignee:

Family ID:

Application Date:

03-04-2006

Declaring Company:

Publication Country:

US

Priority Date:

01-04-2005

Title

METHODS AND APPARATUS FOR ENCODING AND DECODING AN HIGHBAND PORTION OF A SPEECH SIGNAL

Application Number:

CA20062602806

Family ID:

Publication Country:

US

Publication Date:

31-05-2011

Application Date:

03-04-2006

Priority Date:

01-04-2005

Current Assignee:

Declaring Company:

Abstract  Abstract

A wideband speech encoder according to one embodiment includes a lowband encoder and a highband encoder. The lowband encoder is configured to encode a lowband portion of a wideband speech signal as a set of filter parameters and an encoded excitation signal. The highband encoder is configured to calculate values for coding parameters that specify a spectral envelope and a temporal envelope of a highband portion of the wideband speech signal. The temporal envelope is based on a highband excitation signal that is derived from the encoded excitation signal. In one such example the temporal envelope is based on a difference in levels between the highband portion and a synthesized highband signal wherein the synthesized highband signal is generated according to the highband excitation signal and a set of highband filter parameters.

Note:

The information in blue was extracted from the third parties (Standard Setting Organisation, Espacenet)

The information in grey was provided by the patent holder

The information in purple was extracted from the FrandAvenue

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.