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Formant enhancement apparatus and method for improving speech intelligibility

A formant and voice technology, applied in voice analysis, instruments, etc., can solve problems such as voice defects, voice damage, and different processing methods, and achieve the effect of improving intelligibility and quality

Inactive Publication Date: 2017-05-24
TIANJIN UNIV
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  • Application Information

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Problems solved by technology

Because there are problems in the vocal tract of patients with muscular atrophy, it leads to speech defects, such as incomplete or inconspicuous formants in the frequency spectrum, which are not the same as the damage to speech caused by noise, so the treatment methods are not the same Same

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  • Formant enhancement apparatus and method for improving speech intelligibility
  • Formant enhancement apparatus and method for improving speech intelligibility
  • Formant enhancement apparatus and method for improving speech intelligibility

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Embodiment Construction

[0040] Most of the existing speech enhancement methods are aimed at the enhancement of speech information in noisy environments such as channel noise, radio noise, etc., which mainly aim at reducing noise components through algorithms, increasing speech components to improve intelligibility, etc. However, the main problem with the speech of patients with muscular atrophy is the loss of voiced sound formants and unprominent unvoiced sounds due to the reduced ability to control the vocal tract and oral muscles. Just improving SNR through noise reduction does not improve speech information and intelligibility, because it is difficult to distinguish whether the unclear part is noise. Even when the signal-to-noise ratio of the patient's voice is high, there is a problem of low intelligibility.

[0041] The invention aims at the pronunciation characteristics of patients with muscular atrophy, enhances or restores the speaker's voice information, and preserves the speaker's timbre. ...

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Abstract

The invention relates to speech enhancement and brings forward a formant enhancement apparatus and method for improving speech intelligibility, for the purposes of enhancing or recovering voice information of a speaker and reserving tone quality of the speaker for pronunciation features of a patient with muscular atrophy. On one hand, the apparatus and method can help the patient with the muscular atrophy to train pronunciation to carry out speech sounding aiding, and on the other hand, the apparatus and method can also improve communication between the patient with others. According to the formant enhancement apparatus and method for improving speech intelligibility, first of all, pronunciation features of the patient with the muscular atrophy are compared with pronunciation features of normal people, and major differences of the two are obtained; secondly, numerous speech feature parameters of the normal people are taken as a reference database, at the moment, the method for extracting the feature parameters maintains consistent with the method for extracting the speech feature parameters of the patient with the muscular atrophy; thirdly, after the speech feature parameters of the patient with the muscular atrophy are extracted, simple gender division is carried out; and fourthly, the speech feature parameters of the patient are classifier through a trained neural network. The apparatus and method are applied to a speech enhancement occasion.

Description

technical field [0001] The invention relates to speech enhancement; speech processing, specifically, to a formant enhancement method for improving the speech intelligibility of patients with muscular atrophy at the pronunciation site. Background technique [0002] Muscle atrophy refers to the problem of muscle volume reduction caused by the thinning or even disappearance of muscle fibers caused by nutritional disorders. The causes include: neurogenic muscle atrophy, myogenic muscle atrophy, disuse muscle atrophy and other reasons. In addition, it is closely related to the nervous system, and diseases of the spinal cord often cause muscle atrophy, such as Parkinson's disease suffered by Stephen Hawking, as well as Alzheimer's disease, multiple sclerosis, and amyotrophic lateral sclerosis (ALS) etc., which affects the patient's pronunciation. [0003] In addition, with the implementation of the domestic family planning policy, the elderly population is gradually increasing, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10L21/0364G10L21/0232G10L25/30G10L21/0224
CPCG10L21/0364G10L21/0224G10L21/0232G10L25/30
Inventor 薛玮
Owner TIANJIN UNIV
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