Preliminary study of the effect of the spectral content of impulsive noises on the acquisition of auditory fatigue

摘要: With the development of a computerized impulsive noise generator, it has become possible to study effect spectral content noises by measuring temporary threshold shift (TTS). To conduct this type study, new methodology had be developed for obtaining target amount asymptotic in minimum exposure time. This been tested with three impulse signals different frequency bandwidths: signal A extending from 300 1000 Hz B 3000 and C 4000 Hz. The TTS growth curves reach an asymptote about 10 dB after time approximately 30 minutes. obtain effect, peak level 0 12 below that A. Thus, appears is very important parameter prediction damage risks hearing