BRPI0609530A2

5G,4G,3G

Title

Not Available

Application Number:

BR2006PI09530

Publication Date:

13-04-2010

Current Assignee:

Family ID:

Application Date:

03-04-2006

Declaring Company:

Publication Country:

US

Priority Date:

01-04-2005

Title

Not Available

Application Number:

BR2006PI09530

Family ID:

Publication Country:

US

Publication Date:

13-04-2010

Application Date:

03-04-2006

Priority Date:

01-04-2005

Current Assignee:

Declaring Company:

Abstract  Abstract

METHODS AND APPARATUS FOR ENCODIFICAR and DECODE A PORTION OF HIGH BANDWIDTH OF A SPEECH SIGNAL. A encodificador of broadband speech in accordance with one embodiment includes a encodificador and a low bandwidth encodificador of high bandwidth. The encodificador of low bandwidth is configured to encodificar a portion of low bandwidth of a speech signal of broadband as uni set of filter parameters and an excitation signal encodificado. The encodificador of high bandwidth is configured to calculate values for coding parameters that specify a spectral envelope and a temporal envelope of a portion of the high-band speech signal of broadband. The temporal envelope is based on an excitation signal that is derived from the high-band signal of excited encodificado. In this example the temporal envelope is based on a difference in levels between the portion of high bandwidth and high bandwidth of a signal synthesized in which the signal of high bandwidth formant is generated according to the highband excitation signal of high bandwidth and a set of filter parameters of high bandwidth.

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.

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.