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A method for obtaining subglottic pressure value and calculating phonation efficiency

A technology of pressure value and glottis, applied in computing, medical science, special data processing applications, etc., can solve the problems of inconvenient test objects and limited accuracy

Inactive Publication Date: 2008-05-07
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The former type of method brings a lot of inconvenience to the test subject because it is invasive and invasive, while the latter type of method is an estimate, and its accuracy is limited by the measurement operation and calculation method

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 vocalization efficiency during male normal soft vocalization

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

[0113] 1) With the assistance of the doctor, when the research subjects uttered the vowel / a: / softly in the chest voice area, ten transverse and longitudinal X-ray tomograms of the research subjects' larynx were collected respectively, and the oral masks were used to collect synchronously. The oral airflow flow signal and oral voice pressure signal of the research object, the collected oral airflow flow is 189.4cm 3 / s, the oral speech pressure is 0.51Pa.

[0114] 2) Using the serpentine algorithm (Karim, 1998) to detect the vocal cord edge curve on the obtained transverse and longitudinal tomographic images of the larynx.

[0115] 3) Fit the ob...

Embodiment 2

[0121] Example 2: Method for obtaining subglottic pressure value and vocalization efficiency during male normal loud vocalization

[0122] Using the same research object and research steps as in Example 1, when the research object loudly pronounces the vowel / a: / in the chest sound area, the collected oral airflow rate is 502.8 cm 3 / s, the oral speech pressure is 2.6Pa. The X-ray tomogram during its vocalization was analyzed again, and the extracted parameter values ​​were the same as when the soft vocalization was vocalized, so the three-dimensional shape map of the vocal cords was the same, and the glottal angle parameters were calculated to obtain 9 vocal cords after the same changes as in Example 1. 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 vocal efficiency of the male when he ...

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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 diseased speech, in particular to a method for obtaining subglottic pressure value and vocalization efficiency. Background technique [0002] Voice is the most basic, most effective and most important means of human communication. In the process of speech production, the vocal cord is the most important vocal organ, but it is also the most vulnerable part to damage and lesions. The vocal cords present a complex three-dimensional vibration in the process of vocalization. This three-dimensional vibration mode is manifested by the aerodynamic parameters of the speech and the acoustic characteristic parameters of the vocalization, which fundamentally determines the efficiency and quality of speech production. Therefore, the research and analysis of the aerodynamic parameters and acoustic characteristic parameters of the vocalizat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B5/00G06F19/00
Inventor 李盛万明习王素品
Owner XI AN JIAOTONG UNIV
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