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HMM-based method of Mongolian speech synthesis and front-end processing

A technology of speech synthesis and front-end processing, applied in speech synthesis, speech analysis, speech recognition, etc., can solve the problems of high synthesis cost, limited range of pitch period and duration adjustment, and achieve the effect of maintaining natural fluency and reducing costs

Active Publication Date: 2014-03-12
INNER MONGOLIA UNIVERSITY
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Problems solved by technology

[0010] The purpose of the embodiments of the present invention is to provide an HMM-based Mongolian speech synthesis and front-end processing method, aiming to solve the problems of high synthesis cost and limited range of pitch period and duration adjustment in the existing Mongolian speech synthesis method

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[0032] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0033] The application principle of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0034] Such as figure 1 Shown, the method for the Mongolian speech synthesis based on HMM of the embodiment of the present invention comprises the following steps:

[0035] S101: Firstly, analyze the speech data in the sound bank, and extract the corresponding speech parameters;

[0036] S102: According to the extracted speech parameters, the observation vector of HMM can be divided into two parts: spectrum and fundamental frequency, and summarize the context a...

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Abstract

The invention discloses an HMM-based method of Mongolian speech synthesis and front-end processing. The method comprises the following steps of analyzing speech data in a speech corpus; summarizing a context attribute set and a problem set for clustering decision-making trees; performing HMM training and acquiring HMM training results; acquiring corresponding clustering state models, and forming a clustering state model sequence; generating a target acoustic parameter sequence through the dynamic characteristics of parameters, and acquiring synthesis speech through a STRAIGHT synthesizer. The method of front-end processing comprises the following steps of performing special character processing on input Mongolian; transferring Mongolian to Latin; annotating the part of speech of Mongolian; transferring Latin to phonemes by adopting a G2P model; segmenting syllables by adopting rules; synthesizing data in the format required by rhythm forecasting; performing the rhythm forecasting; processing and acquiring a text format required by the synthesis. By the method, the duration and the pitch period parameter of the synthesis speech can be adjusted freely, the naturality and fluency of the synthesis speech are ensured, and the cost of the synthesis is reduced.

Description

technical field [0001] The invention belongs to the technical field of speech synthesis, and in particular relates to a Mongolian speech synthesis and front-end processing method based on HMM. Background technique [0002] Speech synthesis is a key technology to realize human-machine voice communication. It involves multiple disciplines such as acoustics, linguistics, digital signal processing, and computer science. It is a cutting-edge technology in the field of information processing. The main problem to be solved is how to integrate The conversion of text information into audible sound information is to make the machine speak like a human. [0003] Today's mainstream speech synthesis method is the speech synthesis technology based on HMM. Compared with the waveform splicing technology based on large corpus, it can automatically build a new system in a short time without manual intervention, and the whole The training process basically does not depend on the advantages of...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10L13/08G10L15/14
Inventor 飞龙高光来赵建东张学良
Owner INNER MONGOLIA UNIVERSITY
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