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Vocal fold vibration vocalization efficiency measurement system and its measurement method

A vocal cord vibration and efficiency measurement technology, applied in the field of biomedical instruments, to achieve the effects of improved accuracy, simple operation, good operability and reliability

Inactive Publication Date: 2017-10-20
XI AN JIAOTONG UNIV
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  • Vocal fold vibration vocalization efficiency measurement system and its measurement method
  • Vocal fold vibration vocalization efficiency measurement system and its measurement method
  • Vocal fold vibration vocalization efficiency measurement system and its measurement method

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Embodiment Construction

[0045] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0046] Such as figure 1 As shown, the present invention provides a vocal cord vibration vocalization efficiency measurement system, comprising: a sensor module, a signal preprocessing module, a central control module, a single-chip microcomputer and a PC interactive module and a processing module;

[0047] The sensor module is used to collect the characteristic signal of the speaker according to the preset frequency, and the characteristic signal includes subglottic pressure, glottic airflow and sound level; the sensor module includes: an oral air pressure sensor, an oral air flow sensor and a microphone.

[0048] Such as image 3 As shown, the signal preprocessing module is used to preprocess the collected characteristic signals; the signal preprocessing module includes a preamplifier circuit, a low-pass filter circuit and a power frequency filter circuit; the output...

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Abstract

The invention discloses a system and method for measuring the efficiency of sound production through vocal cord vibration, and the system comprises a sensor module, a signal pre-processing module, a central control module, a single-chip microcomputer and PC interaction module, and a processing module. The central control module enables a collected characteristic signal to be transmitted to the processing module for calculation through a glottis pull-down method and a wave current index method, thereby obtaining the efficiencies of sound production under the conditions of the two algorithms. Moreover, the measurement result of the glottis pull-down method serves as the x-coordinate, and the measurement result of the wave current index method serves as the y-coordinate, thereby forming a coordinate graph for the sound production through vocal cord vibration. Based on a single-chip microcomputer, the system achieves the control and measurement, is simple in operation, achieves the real-time display of the measurement results, and is portable and practical.

Description

technical field [0001] The invention belongs to the field of biomedical instruments, and in particular relates to a multifunctional measurement system for vocal cord vibration and vocalization efficiency based on the principle of aerodynamics. Background technique [0002] In the process of speech production, the vocal cords are the most important pronunciation organs, but they are also the most prone to damage and pathological changes. When vocalizing, vocal cord vibration converts aerodynamic energy into speech acoustic energy, and the conversion efficiency of this energy is defined as vocalization efficiency. Vocalization efficiency is related to factors such as the physiological structure of the vocal cords and the way of vocalization. Real-time and accurate measurement of vocalization efficiency is of great significance for the study of vocalization physiology and the analysis of voice pathology. [0003] At present, two methods are mainly used to measure the sound pro...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B5/00A61B5/091
Inventor 万明习张聪吴亮王素品
Owner XI AN JIAOTONG UNIV