US7529673B2

5G,4G,3G,2G

Title

Spectral parameter substitution for the frame error concealment in a speech decoder

Application Number:

US20060402220

Publication Date:

05-05-2009

Current Assignee:

Family ID:

Application Date:

10-04-2006

Declaring Company:

Publication Country:

US

Priority Date:

23-10-2000

Title

Spectral parameter substitution for the frame error concealment in a speech decoder

Application Number:

US20060402220

Family ID:

Publication Country:

US

Publication Date:

05-05-2009

Application Date:

10-04-2006

Priority Date:

23-10-2000

Current Assignee:

Declaring Company:

Abstract  Abstract

A method for use by a speech decoder in handling bad frames received over a communications channel a method in which the effects of bad frames are concealed by replacing the values of the spectral parameters of the bad frames (a bad frame being either a corrupted frame or a lost frame) with values based on an at least partly adaptive mean of recently received good frames but in case of a corrupted frame (as opposed to a lost frame) using the bad frame itself if the bad frame meets a predetermined criterion. The aim of concealment is to find the most suitable parameters for the bad frame so that subjective quality of the synthesized speech is as high as possible.

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.