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A platform for research: civil engineering, architecture and urbanism
Noise as a problem for the hearing impaired
AbstractThis paper gives some results of current research on the elevation of the Speech-Reception Threshold (SRT) in noise due to hearing impairment. The experiments were carried out with simple sentences as speech material. The noise had the same spectrum as the long-term average of the speech signal. The SRT was the level at which 50% of the sentences were repeated correctly by the listener. Roughly, in the case of steady-state noise, a 3 dB higher speech-to-noise ratio is required. In the case of a fluctuating interfering sound (e.g., a competing peaker), the critical speech-to-noise ratio is about 8.5 dB higher than for normal-hearing listeners. Subsequent data suggest that for the hearing-impaired listeners the benefit of binaural hearing is about 3 dB less than in normal hearing. Since a difference of 1 dB in SRT corresponds with 16–20% difference in the intelligibility score of sentences, the data can explain why many hearing-impaired people have difficulties in understanding speech at speech-to-noise ratios acceptable for normal-hearing listeners.
Noise as a problem for the hearing impaired
AbstractThis paper gives some results of current research on the elevation of the Speech-Reception Threshold (SRT) in noise due to hearing impairment. The experiments were carried out with simple sentences as speech material. The noise had the same spectrum as the long-term average of the speech signal. The SRT was the level at which 50% of the sentences were repeated correctly by the listener. Roughly, in the case of steady-state noise, a 3 dB higher speech-to-noise ratio is required. In the case of a fluctuating interfering sound (e.g., a competing peaker), the critical speech-to-noise ratio is about 8.5 dB higher than for normal-hearing listeners. Subsequent data suggest that for the hearing-impaired listeners the benefit of binaural hearing is about 3 dB less than in normal hearing. Since a difference of 1 dB in SRT corresponds with 16–20% difference in the intelligibility score of sentences, the data can explain why many hearing-impaired people have difficulties in understanding speech at speech-to-noise ratios acceptable for normal-hearing listeners.
Noise as a problem for the hearing impaired
Plomp, R. (author) / Festen, J.M. (author) / Bronkhorst, A.W. (author)
Environmental International ; 16 ; 393-398
1990-01-05
6 pages
Article (Journal)
Electronic Resource
English
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