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

Publication Country:

US

Priority Date:

23-10-2000

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.

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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

Implicitly disclosed patent

Basis patent

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