Patent ID: 7272559
Filing Date: 2007-09-18
Classification: G10L,G16H,G16Z

Abstract:
1. A noninvasive method of identifying and measuring a neurological manifestation in human speech of an early phase of neuro disease including: converting a human subject's spoken words into corresponding electrical signals; amplifying said electrical signals; frequency band limiting, and signal conditioning the said electrical signals to produce modified signals; determining an envelope of said modified signals; determining a spectral density of said modified signals and providing a spectral density signal; smoothing said spectral density signal; determining a spectral envelope of said smoothed spectral density signal; determining the presence of a depression in said spectral envelope; determining an amplitude of said depression with reference to an average db level of two shoulder peaks in said spectral density signal on either side of said depression; determining a ratio of said amplitudes of said depression and said average db level of said two shoulder peaks; and using said ratio for identifying and measuring a neurological manifestation in the subject's spoken word, of early phases of neuro disease.