CA2347735C

5G,4G,3G,2G

Title

HIGH FREQUENCY CONTENT RECOVERING METHOD AND DEVICE FOR OVER-SAMPLED SYNTHESIZED WIDEBAND SIGNAL

Application Number:

CA19992347735

Publication Date:

08-01-2008

Current Assignee:

Family ID:

Application Date:

27-10-1999

Declaring Company:

Publication Country:

US

Priority Date:

27-10-1998

Title

HIGH FREQUENCY CONTENT RECOVERING METHOD AND DEVICE FOR OVER-SAMPLED SYNTHESIZED WIDEBAND SIGNAL

Application Number:

CA19992347735

Family ID:

Publication Country:

US

Publication Date:

08-01-2008

Application Date:

27-10-1999

Priority Date:

27-10-1998

Current Assignee:

Declaring Company:

Abstract  Abstract

In a method and device for recovering the high frequency content of a wideband signal previously down-sampled during encoding and for injecting during decoding this high frequency content in an oversampled synthesized version of the wideband signal to produce a full-spectrum synthesized wideband signal a white noise generator produces a white noise sequence. Serially interconnected gain adjustment unit spectral shaper and band-pass filter spectrally shapes the white noise sequence in relation to a set of shaping parameters representative of the down-sampled wideband signal such as a voicing factor an energy scaling factor a tilt scaling factor and linear prediction filter coefficients. A signal injection circuit finally injects the spectrally-shaped white noise sequence in the over-sampled synthesized signal version to thereby produce the full-spectrum synthesized wideband signal.

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.