کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4356491 | 1615683 | 2006 | 13 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A study of hearing aid gain functions based on a nonlinear nonlocal feedforward cochlea model
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کلمات کلیدی
SPLSNRICESOHCLDFSpeech intelligibility indexSIIiTR - ITRHearing loss - از دست دادن شنواییdecibel - دسیبلtwo-dimensional - دو بعدیNoises - سر و صداSound pressure level - سطح فشار صوتouter hair cell - سلول بیرونی موIntelligibility - قابل فهم بودنmillisecond - میلی ثانیهnanometer - نانومترsignal to noise ratio - نسبت سیگنال به نویزSpeech intelligibility - هوش مصنوعی سخنرانیkHz - کیلوهرتز
موضوعات مرتبط
علوم زیستی و بیوفناوری
علم عصب شناسی
سیستم های حسی
پیش نمایش صفحه اول مقاله
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چکیده انگلیسی
A model based sound amplification method is proposed and studied to enhance the ability of the hearing impaired. The model consists of mechanical equations on basilar membrane and outer hair cell (OHC). The OHC is described by a nonlinear nonlocal feedforward model. In addition, a perceptive correction is defined to account for the lumped effect of higher level auditory processing, motivated by the intelligibility function of the hearing impaired. The gain functions are computed by matching the impaired model output to the perceptively weighted normal output, and qualitative agreement is achieved with NAL-NL1 prescription on clean signals. For noisy signals, an adaptive gain strategy is proposed based on the signal to noise ratios (SNR) computed by the model. The adaptive gain functions provide less gain as SNRs decrease so that the intelligibility can be higher with the adaptivity.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Hearing Research - Volume 215, Issues 1â2, May 2006, Pages 84-96
Journal: Hearing Research - Volume 215, Issues 1â2, May 2006, Pages 84-96
نویسندگان
Yongsam Kim, Jack Xin, Yingyong Qi,