A method for obtaining subglottic pressure value and calculating phonation efficiency

A pressure value, glottal technology, applied in computing, medical science, special data processing applications, etc., can solve problems such as accuracy limitations, inconvenience of test objects, etc.

Inactive Publication Date: 2006-12-13
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The former type of method brings a lot of inconvenience to the test subject because it is invasive and invasive, whil...

Method used

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  • A method for obtaining subglottic pressure value and calculating phonation efficiency
  • A method for obtaining subglottic pressure value and calculating phonation efficiency
  • A method for obtaining subglottic pressure value and calculating phonation efficiency

Examples

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Effect test

Embodiment 1

[0111] Example 1: Method for Obtaining Subglottic Pressure Value and Vocal Efficiency of Male Normal Soft Voice

[0112] The research object of the embodiment is a 25-year-old young male, and the following steps are adopted to obtain the subglottic pressure, vocalization efficiency value and other aerodynamic parameter values:

[0113] 1) With the assistance of the doctor, when the research subject softly pronounces the vowel / a: / in the chest voice area, ten horizontal and vertical X-ray tomograms of the research subject's larynx are collected respectively, and the oral mask is used to simultaneously collect Oral air flow signal and oral voice pressure signal of the research object, the collected oral air flow is 189.4cm 3 / s, oral speech pressure is 0.51Pa.

[0114] 2) For the obtained laryngeal transverse and longitudinal tomographic images, use the serpentine algorithm (Karim, 1998) to detect the edge curve of the vocal cords.

[0115] 3) Fit the obtained vocal fold late...

Embodiment 2

[0121] Example 2: Method for Obtaining Subglottic Pressure Value and Vocal Efficiency of Male Normal Loud Voice

[0122] Using the same research object and research steps as in Example 1, when the research object uttered the vowel / a: / loudly in the chest voice area, the collected oral air flow was 502.8cm 3 / s, oral speech pressure is 2.6Pa. The X-ray tomogram of its vocalization was analyzed again, and the extracted parameter values ​​were the same as those of the soft vocalization, so the three-dimensional shape diagram of the vocal cords was the same, and the glottal angle parameters were changed in the same way as in Example 1 to obtain 9 vocal cords. The pressure values ​​under the door are: 56.62, 48.22, 45.55, 44.94, 43.9, 43.01, 42.55, 43.38, 44.18cmH 2 O, its mean value is 45.87cmH 2 O, is the desired subglottic pressure value. Using the same method, it can be calculated that the vocalization efficiency of the male voice is 1.127*10 -4 . Using the obtained subgl...

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Abstract

The invention discloses the glottal pressure and computational sounding efficiency and aerodynamics parameter value on the base of aerodynamics modeling technology. The method comprises as follows: providing the method of defining vocal fold three-dimensional geometrical form characteristic value; offering the vocal fold surface three-dimensional reconstruction method; providing the aerodynamics modeling method which is based on three-dimensional finite element algorithm; providing the method of getting glottal pressure and computational sounding efficiency. The method is used to auxiliary diagnose throat, and has significant meaning in sounding function evaluation, sounding physiology, basic research, artistic noise, phonetic science, speech signal processing and linguistic science.

Description

technical field [0001] The invention belongs to the technical field of aerodynamic parameters and vocalization characteristic parameters of normal and pathological speech, and particularly relates to a method for obtaining subglottic pressure value and vocalization efficiency. Background technique [0002] Speech is the most basic, effective and important means for human beings to communicate. In the process of speech production, the vocal cords are the most important pronunciation organ, but it is also the most vulnerable part to damage and pathological changes. The vocal cords present a complex three-dimensional vibration during the vocalization process. This three-dimensional vibration mode is manifested by the aerodynamic parameters of speech and the acoustic characteristic parameters of vocalization, and fundamentally determines the efficiency and quality of speech production. Therefore, the research and analysis of the aerodynamic parameters an...

Claims

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Application Information

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IPC IPC(8): A61B5/00G06F19/00
Inventor 李盛万明习王素品
Owner XI AN JIAOTONG UNIV
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