Signal-to-Noise Ratio Advantage of Binaural Hearing Aids and Directional Microphones under Different Levels of Reverberation The signal-to-noise ratio necessary for a constant performance level was determined for normally hearing and hearing-impaired subjects under three levels of reverberation (0.3, 0.6, and 1.2 s) with monaural and binaural hearing aids having directional and omnidirectional microphones. Results indicated (a) a significant binaural advantage (2–3 dB) which was independent ... Reports
Reports  |   August 01, 1984
Signal-to-Noise Ratio Advantage of Binaural Hearing Aids and Directional Microphones under Different Levels of Reverberation
 
Author Notes
Article Information
Reports   |   August 01, 1984
Signal-to-Noise Ratio Advantage of Binaural Hearing Aids and Directional Microphones under Different Levels of Reverberation
Journal of Speech and Hearing Disorders, August 1984, Vol. 49, 278-286. doi:10.1044/jshd.4903.278
History: Received September 26, 1983 , Accepted May 7, 1984
 
Journal of Speech and Hearing Disorders, August 1984, Vol. 49, 278-286. doi:10.1044/jshd.4903.278
History: Received September 26, 1983; Accepted May 7, 1984

The signal-to-noise ratio necessary for a constant performance level was determined for normally hearing and hearing-impaired subjects under three levels of reverberation (0.3, 0.6, and 1.2 s) with monaural and binaural hearing aids having directional and omnidirectional microphones. Results indicated (a) a significant binaural advantage (2–3 dB) which was independent of microphone type and reverberation time, (b) a significant directional microphone advantage (3–4 dB) which was independent of hearing aid arrangement (monaural or binaural) but dependent on level of reverberation, (c) a significant reverberation effect which was larger than either the binaural or directional microphone effect, and (d) additive binaural and directional microphone advantages. The results suggest that the signal-to-noise ratio is optimized when binaural hearing aids with directional microphones are used in rooms with short reverberation times.

Order a Subscription
Pay Per View
Entire Journal of Speech and Hearing Disorders content & archive
24-hour access
This Article
24-hour access