US 2014/0236581 A1 · VOICE SIGNAL ENCODING METHOD, VOICE SIGNAL DECODING METHOD, AND APPARATUS USING SAME

Abstract

The present invention relates to a method and apparatus for processing a voice signal, and the voice signal encoding method according to the present invention comprises the steps of: generating transform coefficients of sine wave components forming an input voice signal by transforming the sine wave components; determining transform coefficients to be encoded from the generated transform coefficients; and transmitting indication information indicating the determined transform coefficients, wherein the indication information may include position information, magnitude information, and sign information of the transform coefficients.

Claims14

Dependent claims

A voice signal encoding method comprising the steps of:

converting sinusoidal components constituting an input voice signal and generating transform coefficients of the sinusoidal components;
determining the transform coefficients to be encoded out of the generated transform coefficients;
and
transmitting index information indicating the determined transform coefficients,
wherein the index information includes position information, amplitude information, and sign information of the transform coefficients, and
wherein when the transform coefficients to be encoded are neighboring transform coefficients, the position information duplicatively indicates the same position.

3 more elements

A voice signal decoding method comprising the steps of:

receiving a bitstream including voice information;
reconstructing transform coefficients of sinusoidal components constituting a voice signal on the basis of index information included in the bitstream;
and
inversely transforming the reconstructed transform coefficients to reconstruct the voice signal,
wherein the step of reconstructing the transform coefficients includes reconstructing the transform coefficients at the indicated position and a position adjacent to the indicated position when the index information duplicatively indicates the same position.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application

14/347,767Filed 28 Sep 2012

Priority

28 Sep 2011

Published

21 Aug 2014

Term ends

Not estimatedThe source records don’t support an estimate.

Classification5 codes

G10L 19/02
Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals,…:…
G10L 19/032
Using spectral analysis, e.g. transform vocoders or subband vocoders: quantisation or dequantisation of spectral components
G10L 19/0212
Using spectral analysis, e.g. transform vocoders or subband vocoders: using orthogonal transformation
G10L 19/24
Vocoders using multiple modes: variable rate codecs, e.g. for generating different qualities using a scalable representation such as hierarchical…

Voice signal encoding method, voice signal decoding method, and apparatus using same

Life of this patent

Voice signal encoding method, voice signal decoding method, and apparatus using same

Life of this patent

Abstract

Claims14