Patent ID: 7421392
Filing Date: 2008-09-02
Classification: A61B,G10L

Abstract:
1. A diagnostic method comprising: outputting a Noise-Vocoded Speech Sound signal that is obtained by dividing at least one portion of a sound signal into a frequency band signal and subjecting the frequency band signal to noise; receiving a response of a patient; and diagnosing a disease of the patient based on the response; wherein the Noise-Vocoded Speech Sound signal is a word or a sentence in which a component of a sound source signal is subjected to noise is generated by: extracting a frequency band signal with a predetermined frequency band from at least one portion of the sound signal by a first band filtering procedure having a plurality band filtering procedures; extracting an amplitude envelope of each frequency signal by an envelope extracting procedure; generating a frequency band noise signal corresponding to the predetermined frequency band from a noise source signal by a second band filtering procedure having a plurality of band filtering procedures; multiplying the amplitude envelope of each frequency signal by the frequency band noise signal in a multiplying procedure; and accumulating outputs obtained by the multiplying procedure in an adding procedure.