| 摘要 |
PURPOSE:To make it possible to exactly determine whether the voice passage is normal or abnormal by successively performing tomography with the use of a scanner so as to detect the cross-sectional areas of the voice passage, and by calculating acoustic parameters of voices corrected by a voice collector. CONSTITUTION:A scanner 5 is operated so as to carry out a tomography, successively by n times at infinitesimal intervals DELTAx over the voice passage 17 of a body 11 to be tested. Then, thus obtained tomographic data are delivered to an image processing device 6 so as to reconstitute fault images and to calculate cross-sectional areas A1, A2, A3... of the voice passage at a high speed. In parallel with these steps, voices are collected by means of a voice collector 7, and then thus obtained voice signals are converted by a signal converter 8, and are then delivered to the image processing device 6 which therefore calculates acoustic parameters at a high speed. The position of the vocal bands as a sound source is obtained in accordance with thus calculated cross-sectional areas of the voice passage and voice signals. Then, the acoustic characteristic of thus obtained voice is compared with that of the normal voice of a normally healthy person so that the image processing device 6 determines whether the voice is normal or abnormal at a high speed. The result of the processing is stored in a memory device, and the image data are displayed on a display unit 10. |
