Method and arrangement for synthesizing speech

A technology of speech and speech synthesis, applied in speech analysis, speech synthesis, instruments, etc., can solve the problems of complex structure and increased cost, and achieve the effect of speed control and high quality

Inactive Publication Date: 2007-03-28
SONY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the usual speech decoding method, the decoded speech must use pitch control to change the pitch, making the structure complicated and increasing the cost

Method used

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  • Method and arrangement for synthesizing speech
  • Method and arrangement for synthesizing speech
  • Method and arrangement for synthesizing speech

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Embodiment Construction

[0038] Referring to the accompanying drawings, the speech signal duplication method and apparatus according to the preferred embodiment of the present invention will be described below. The present embodiment relates to a speech signal duplication device 1 for duplicating a speech signal according to coding parameters. These coding parameters are to segment an input speech signal on the time axis according to a predetermined number of frames as a coding unit, and divide the split input speech signal into coded, as shown in Figure 1.

[0039] The speech signal duplication device 1 includes an encoding unit 2 for encoding a speech signal entered at an input terminal 101 according to a frame as a unit, which outputs, for example, linear predictive coding (LPC) parameters, line spectral pair (LSP) parameters, pitch, voiced sound (V ) / unvoiced sound (UV) or spectral amplitude Am and other encoded parameters, and includes a period modification unit 3 that compresses the output perio...

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Abstract

A method for reproducing speech signals at a controlled speed, an encoding unit discriminates whether an input speech signal is voiced or unvoiced. Based on the results of discrimination, the encoding unit performs sinusoidal synthesis and encoding for a signal portion found to be voiced, while performing vector quantization by closed-loop search for an optimum vector for a portion found to be unvoiced using an analysis-by-synthesis method. The decoding unit generates encoded parameters obtained for modifying and associated with different time points corresponding to the pre-set frames. A speech synthesis unit synthesizes the voiced speech portion and the unvoiced speech portion. An encoded bit stream or encoded data is outputted by an encoded data outputting unit. A waveform synthesis unit synthesizes the speech waveform.

Description

[0001] The application date of the present invention is October 26, 1996, and the application number is 96121905.X, which is called "method and device for duplicating voice signals, method and device for decoding voice, method and device for synthesizing voice, and portable radio terminal equipment" "A divisional application of the patent application. technical field [0002] The present invention relates to a method and a device for duplicating a speech signal at a controlled speed, a method and a device for decoding a speech signal and a method and a device for synthesizing a speech signal, wherein pitch conversion can be realized by a simplified structure. The invention also relates to portable radio terminal equipment for transmitting and receiving pitch-converted speech signals. Background technique [0003] Various encoding methods are known hitherto for encoding audio signals (including speech and acoustic signals) which compress the signal using the statistical prope...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): G10L21/04G10L19/02G10L19/04G10L13/00G10L19/038G10L19/093G10L19/16G10L19/20G10L25/93H03M7/30
CPCG10L19/087G10L21/01G10L13/033G10L2019/0012G10L19/04G10L13/02
Inventor饭岛和幸西口正之松本淳大森士郎
OwnerSONY CORP