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Laryngeal stroboscope using voice signal

A voice signal and observer technology, applied in laryngoscope, application, medical science and other directions, can solve the problems of using attenuation, difficult to detect the peak value of fundamental wave signal, unable to accurately determine the light emission cycle of stroboscope, etc.

Inactive Publication Date: 2010-06-09
UMEDICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

All throat stroboscopes developed in the 1980s use this method, but its use is declining today
Therefore, when a microphone is used, it is difficult to detect the peak of the fundamental signal, and there is a problem in the speed of automatic gain control (AGC) operation directly related to peak signal detection
Therefore, the stroboscope light emission cycle cannot be accurately determined relative to most speech samples

Method used

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  • Laryngeal stroboscope using voice signal
  • Laryngeal stroboscope using voice signal
  • Laryngeal stroboscope using voice signal

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Embodiment Construction

[0023] The present invention is described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the invention are shown. This invention may, however, be embodied in many different forms and should not be construed as limited to the exemplary embodiments set forth herein. Rather, these exemplary embodiments are provided so that this disclosure is thorough, and will fully convey the scope of the invention to those skilled in the art. The same reference numbers in the figures indicate the same elements.

[0024]

[0025] Exemplary embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0026] figure 1 is a block diagram of a throat stroboscope according to an exemplary embodiment of the present invention. see figure 1 , the throat stroboscope according to an exemplary embodiment of the present invention includes a microphone 100, a high-pass filter 101, a low-pass f...

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Abstract

Provided is a laryngeal stroboscope using voice signals. The laryngeal stroboscope includes a photography unit for photographing a patient's vocal cords and a light source for illuminating a part to be photographed, a microphone for sensing the patient's voice, a high-pass filter for passing voice signals of 100 Hz or more among voice signals output from the microphone, a low-pass filter for removing signals of harmonic components from the voice signals output from the high-pass filter and passing only a voice signal in a fundamental frequency band, a peak detector for detecting a peak of the voice signal output from the low-pass filter and obtaining a pitch, and a controller for controlling the light source to intermittently emit light in response to a signal output from the peak detector and controlling the photography unit to operate according to whether or not the light is intermittently emitted.

Description

technical field [0001] The present invention relates to a laryngeal stroboscope for photographing the vocal cords in conjunction with an endoscope, and more particularly to a laryngeal stroboscope that uses a microphone to synchronize light emissions with speech signals. Background technique [0002] A stroboscope is an instrument that radiates periodic flashes of light onto a rapidly rotating or vibrating object and thereby enables the object to be observed as if it were stationary or moving slowly. The laryngeal stroboscope synchronizes the light emission operation with the fundamental frequency of the vocal cords, allowing the user to observe vocal cords that vibrate continuously during speech but appear to be stationary or slowly moving at one phase point. Such a laryngeal stroboscope is a useful instrument for checking minor damage of vocal cords, prognosis of vocal cord paralysis, and the like. [0003] In fact, the laryngeal stroboscope does not display an image in e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B1/267
CPCA61B1/2673A61B1/04
Inventor 金柄哲朴京慧权奇植崔范永朴钟元李峻一李谨春
Owner UMEDICAL
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