PC based system for analysis of the voice of patients with laryngeal disease.

A low cost microcomputer system for analysis of the voice of patients with laryngeal diseases is proposed. The system realizes an evaluation of the following speech parameters affected by laryngeal disease: voice degree of hoarseness; pitch period (T0); pitch period perturbations; degree of subharmonic components; and number of the stops in T0 generation during sustained vowel phonation. Other nonacoustic parameters concerning the patient's status are input into the computer using the keyboard. The hardware consists of a microphone and an ADC-board (plugged into the PC) allowing the PC to be used as a system for pathological voice analysis. Preliminary experimental research has shown the effectiveness of the system.