US 2016/0111101 A1 · APPARATUS AND METHOD FOR CONCEALING FRAME ERASURE AND VOICE DECODING APPARATUS AND METHOD USING THE SAME

Abstract

An apparatus and method for concealing frame erasure and a voice decoding apparatus and method using the same. The frame erasure concealment apparatus includes: a parameter extraction unit determining whether there is an erased frame in a voice packet, and extracting an excitement signal parameter and a line spectrum pair parameter of a previous good frame; and an erasure frame concealment unit, if there is an erased frame, restoring the excitement signal and line spectrum pair parameter of the erased frame by using a regression analysis from the excitement signal and line spectrum pair parameter of the previous good frame. According to the method and apparatus, by predicting and restoring the parameter of the erased frame through the regression analysis, the quality of the restored voice signal can be enhanced and the algorithm can be simplified.

Claims4

Dependent claims

An apparatus of concealing frame erasure, the apparatus comprising:

at least one processing device configured:
to predict a first parameter of an erased frame of a bitstream transmitted from an encoder, by performing a linear regression analysis on a second parameter obtained from a plurality of previous good frames;
to obtain a gain parameter between the first parameter of the erased frame and the second parameter;
and
to conceal the erased frame, by applying the gain parameter to a previous good frame from among the plurality of previous good frames.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application

14/980,927Filed 28 Dec 2015

Priority

KR 10-2005-006854127 Jul 2005

Published

21 Apr 2016

Term ends

Not estimatedThe source records don’t support an estimate.

Classification9 codes

G10L 19/0017
Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals,…:…
G10L 19/005
Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals,…:…
G10L 19/07
Determination or coding of the spectral characteristics, e.g. of the short-term prediction coefficients: line spectrum pair [LSP] vocoders
G10L 19/083
Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters: the excitation function being…

Family

Application11/417,165Continuation · filed 4 May 2006

Application13/477,461Continuation · filed 22 May 2012

Application13/916,835Continuation · filed 13 Jun 2013

Application14/980,927Continuation

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