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Coding for phoneme of speech sound and method for synthesizing speech sound

A speech synthesis and speech technology, applied in the field of speech coding and decoding, can solve problems such as judgment errors and hoarseness, and achieve the effect of saving memory space

Inactive Publication Date: 2003-10-22
INVENTEC BESTA CO LTD
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

In addition, most of the existing speech analysis and synthesis technologies operate in an on-line manner. Therefore, it is necessary to add an action to judge whether the speech is "sound". Often in the process of judgment, "sound" and The part of "silent" is wrongly judged, resulting in a hoarse voice during speech synthesis

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  • Coding for phoneme of speech sound and method for synthesizing speech sound
  • Coding for phoneme of speech sound and method for synthesizing speech sound
  • Coding for phoneme of speech sound and method for synthesizing speech sound

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Embodiment Construction

[0050] On the basis of pronunciation, most languages ​​are polysyllabic. Taking English as an example, if English is subdivided into different monosyllables composed of different phonetic symbols, thousands of basic pronunciation units can be summarized in English, and these pronunciation units are phonemes, and each different The phoneme itself has its pitch. Therefore, the phoneme-based language can be used to encode and decode the speech in turn, and the present invention is based on the application of this concept.

[0051] Secondly, since the voice processing in the electronic dictionary market is more regular, and the required data compression is relatively large, the present invention uses Linear Predictive Coding (hereinafter referred to as LPC) as the encoding and decoding of the present invention. The way. In addition, Linear Prediction Coding (LPC) is based on the speech sound model, and the parameters of the Vocal Tract Filter (Vocal Tract Filter) and the fundame...

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Abstract

The invention refers to a code of phoneme and the sound synthesizing method, the invention samplings the sound with offline mean. It categories the sampled sound data into three phonemes according tovoice, aphonia, and mute. Codes the voice phoneme according to the base period parameter, swing parameter and frequency parameter, records the aphonia phoneme, records the mute phoneme with the length of mute time. Records these coded phonemes into sound data bank; only need to decode the phonemes in data bank, it can be recovered into sound; the phonemes pass through a sound synthesizer which isdesigned according to the base period parameter, swing parameter and frequency parameter, the aphonia phoneme can be taken out directly, plays the length of the mute phoneme, the sound which approaches the quondam can be synthesized.

Description

technical field [0001] The present invention relates to a speech coding and speech synthesis method, in particular to a phoneme-based method using LPC technology to code and decode speech. Background technique [0002] In the middle and low-end electronic dictionary market, the function of pronouncing human pronunciation has become the main feature of electronic dictionaries. In order to enhance the competitiveness of middle and low-end electronic dictionaries in the market, various manufacturers are all focusing on the improvement of voice function and at the same time, they must be able to reduce production costs. Some manufacturers emphasize the recording of specific voices by real people. Due to the large amount of data and the extremely limited types of system output, it is quite costly. Therefore, most manufacturers use voice analysis and synthesis to approach human pronunciation, allowing electronic Thesaurus saves voice data memory and improves voice quality. [00...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10L13/00G10L19/00
Inventor 杨凰琳
Owner INVENTEC BESTA CO LTD