Title :
A study for the effect of widened auditory filter of hearing impaired listener
Author :
Hongsub An ; Euichul Jeong ; Youngrok Song ; Sangbang Choi ; Dongseok Jeong ; Sangmin Lee
Author_Institution :
Dept. of Electron. Eng., Inha Univ., Incheon, South Korea
Abstract :
The reduced frequency selectivity is a typical phenomenon of sensorineural hearing loss. In this paper, we made modeling of reduced frequency selectivity for hearing impaired listener. The model of reduced frequency selectivity was generated with bandwidth control algorithm based on ERB(equivalent rectangular bandwidth) of auditory filter. In other to examine the effectiveness of model, we compared PESQ(perceptual evaluation of speech quality) score and LLR(log likelihood ratio) score with 36 Korean worlds of two syllables. To verify the effect on noise condition, we mixed white and babble noise with 0dB and -3dB SNR to speech words. As the result, PESQ score is lower as extending bandwidth of filter however LLR score is almost same. It means that non-linearity and widen auditory filter characteristics caused by reduced frequency selectivity could be reflected in bandwidth control algorithm.
Keywords :
acoustic filters; acoustic signal processing; acoustic variables measurement; acoustic wave effects; biomedical engineering; hearing; medical signal processing; neurophysiology; auditory filter; babble noise; bandwidth control algorithm; equivalent rectangular bandwidth; hearing impaired listener; log likelihood ratio; noise condition; perceptual evaluation; reduced frequency selectivity; sensorineural hearing loss; speech quality; white noise; Auditory system; Band pass filters; Bandwidth; Filtering algorithms; Noise; Shape; Speech; ERB; LLR; PESQ; auditory filter; reducedfrequency selectivity;
Conference_Titel :
Biomedical Engineering and Informatics (BMEI), 2011 4th International Conference on
Conference_Location :
Shanghai
Print_ISBN :
978-1-4244-9351-7
DOI :
10.1109/BMEI.2011.6098448
