Abstract
Nowadays, diagnostical methods for sensitivity and for frequency resolution of hearing are developed in different degrees. Instruments for precise measurements of frequency resolving power (FRP) of hearing are not widely used for practical needs. Laboratory methods for FRP measurements are not convenient for the practical use. Signals with rippled spectra may be an effective tool for testing FRP both for fundamental investigations of hearing and for practical audiology. The use of such test signals allows to measure not the acuteness of individual frequency-tuned auditory filters but the real capability for discrimination of complex-spectrum sound signals. FRP measurements with the use of rippled test signals are convenient for the practical use. Apart from that, data on discrimination of rippled signals provided data on the role of several fundamental hearing mechanisms: compressive non-linearity, lateral suppression, frequency and temporal mechanisms of frequency analysis. Depending on the discrimination task, either frequency or temporal mechanism of frequency analysis determines FRP. Rippled signals were successfully used for assessment of frequency resolution in cochlear implant users.
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