Method of and apparatus for enhancing dialog using formants

A formant, line spectrum pair technology, applied in speech analysis, speech recognition, instruments, etc., can solve problems such as large amount of calculation and distortion of speech signal envelope.

Inactive Publication Date: 2005-05-25
SAMSUNG ELECTRONICS CO LTD
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  • Abstract
  • Description
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Problems solved by technology

[0007] Since the conventional dialogue enhancement system uses many filter banks in the spectrum analyzer 42 to analyze frequencies, the calculation for this analysis process is very large, and since the gain of the formant is controlled by the VCA unit 50, the speech signal Envelope becomes distorted

Method used

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  • Method of and apparatus for enhancing dialog using formants
  • Method of and apparatus for enhancing dialog using formants
  • Method of and apparatus for enhancing dialog using formants

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Embodiment Construction

[0022] Embodiments of the present general inventive concept will now be described in detail, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like parts throughout. The embodiments are described below in order to explain the present general inventive concept by referring to the figures.

[0023] figure 2 is a block diagram of a dialogue enhancement device according to an embodiment of the present general inventive concept.

[0024] refer to figure 2 , the signal synthesizer 210 synthesizes signals input through the left and right channels to generate a synthesized signal. Here, the left and right channel signals include speech signals and background noise.

[0025] Lifting filter coefficient extractor 220 extracts formants by computing line spectral pair (LSP) coefficients and linear predictive coding (LPC) coefficients from the composite signal, extracts lifting filter coefficients from formants, based on the proxim...

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Abstract

A dialog enhancement method and device for enhancing the formant of the dialog area without changing the voice area, comprising: calculating line spectral pair (LSP) coefficients based on linear predictive coding (LPC) from an input signal; determining based on the calculated LSP coefficients Whether there is a speech region in the input signal; and extracting formants from LSP coefficients according to whether there is a speech region, and lifting the formants.

Description

[0001] This application claims priority from Korean Patent Application No. 2003-82976 filed in the Korean Intellectual Property Office on November 21, 2003, which is hereby incorporated by reference in its entirety. technical field [0002] The general concept of the present invention relates to a dialogue enhancement system, and in particular to a dialogue enhancement method and device for enhancing the formant of a dialogue area without changing the sound area. Background technique [0003] In general, dialogue enhancement systems improve the intelligibility of dialogue that is reduced by background noise. Traditional dialogue enhancement systems use equalizers and clipping circuits to boost volume only. However, equalizers and clipping circuits amplify dialogue along with background noise. [0004] A conventional dialogue enhancement system is disclosed in U.S. Patent No. 5,459,813 to Klayman, entitled "public address i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10L21/04G10L11/00G10L11/02G10L19/06G10L21/02
CPCG10L21/0208G10L25/15G10L25/78G10L21/0364G10L19/06
Inventor 吴润学朴海光
Owner SAMSUNG ELECTRONICS CO LTD
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