Voiceless sound and voiced sound judging method and device and voice synthesizing system

A judging method and unvoiced sound technology, which is applied in speech synthesis, speech analysis, instruments, etc., can solve the problems of affecting the synthesis effect and inaccurate judgment of unvoiced and voiced sounds, and achieve the effect of improving the success rate of judgment and improving the quality

Active Publication Date: 2014-11-12
TENCENT TECH (SHENZHEN) CO LTD +1
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Problems solved by technology

[0005] However, the set of questions designed to train the Hidden Markov (HMM) model is not specifically for unvoiced judgment, and during the prediction process, the questions in the decision tree may not be related to unvoiced sound at all, but are used to judge speech voicing

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  • Voiceless sound and voiced sound judging method and device and voice synthesizing system
  • Voiceless sound and voiced sound judging method and device and voice synthesizing system
  • Voiceless sound and voiced sound judging method and device and voice synthesizing system

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Embodiment Construction

[0028] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0029] In the trainable speech synthesis system (Trainable TTS) based on the hidden Markov model, the speech signal is converted into an excitation parameter (Excitation parameter) and a spectral parameter (Spectral parameter) by frame. The excitation parameters and spectral parameters are trained as HMM models (training part) respectively. Then, on the speech synthesis side (synthesis part), based on the voicing judgment, voiced sound fundamental frequency and spectral parameters predicted by the HMM model, it is synthesized into speech by a vocoder.

[0030] In the synthesis stage, if a frame is judged as voiced, the excitation signal is assumed to be an impulse response sequence; if it is judged to be unvoiced, the excitation signal is assumed to be white noise...

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Abstract

The embodiment of the invention provides a voiceless sound and voiced sound judging method and device and a voice synthesizing system. The method comprises the steps of setting a voiceless sound and voiced sound judging problem set, utilizing speech training data and the voiceless sound and voiced sound judging problem set to train a voiceless sound and voiced sound judging model of a dichotomia decision tree structure, receiving voice test data and utilizing the trained voiceless sound and voiced sound judging model to judge whether the voice test data are voiceless sound or voiced sound. In addition, non-leaf nodes in the dichotomia decision tree structure are problems in the voiceless sound and voiced sound judging problem set, and leaf nodes in the dichotomia decision tree structure are voiceless sound and voiced sound judging results. The embodiment of the voiceless sound and voiced sound judging method improves the voiceless sound and voiced sound judging success rate and the voice synthesizing quality.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of speech processing, and more specifically, relate to a method, device, and speech synthesis system for judging unvoiced and voiced sounds. Background technique [0002] In today's information age, various information devices have emerged as the times require: fixed telephones and mobile phones for voice transmission; servers and personal computers for information resource sharing and processing; various TV sets for video data display, etc. Wait. These devices are produced to solve actual needs in specific fields. With the advent of the integration of electronic consumption, computer, and communication (3C), people are paying more and more attention to the research on the comprehensive utilization of information equipment in various fields, so as to make full use of existing resources and equipment to serve people. better service. [0003] Speech synthesis is the technology of p...

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Application Information

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IPC IPC(8): G10L25/93G10L13/02
CPCG10L13/02G10L25/93
Inventor 唐宗尧
Owner TENCENT TECH (SHENZHEN) CO LTD
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