In this paper, we present a prototype of a simple
audiometer CAUM (Computer AUdioMeter) based on
a computer equipped with a standard sound card. It is
a software developed under windows in order to
provide a virtual instrument of a standard audiometer
on computer. It has functionality to test a patient's
hearing using pure tone testing and white noise
masking signal.
The functions and performances of the prototype
are evaluated by hearing tests and compared with
classical AC50 audiometer.