A New Computer-Aided Speech Audiometer (CASA)
Yoshio Takéuchi · Practica oto-rhino-laryngologica Suppl · 1991
A new computer-aided speech audiometer (CASA) was developed. The system which employs a 5-choice speech discrimination that method, operates on a personal computer (NEC-9801) with auxiliary hardware which included D/A converter for speech signal replay, touch screen for input of patient's choice among the alternative syllables on the CRT, and an electronic attenuator and amplifier. Advantages of this system: 1) touch screen simplifies patients' response for both slow and quick patients; 2) testers' scoring time and error in scoring task are reduced; 3) a data bank were automatically built for future reference.