کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
755279 895937 2010 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Harmonic and intermodulation performance of hearing aids under large sound pressure levels
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
پیش نمایش صفحه اول مقاله
Harmonic and intermodulation performance of hearing aids under large sound pressure levels
چکیده انگلیسی

A mathematical model for the input–output functions of the hearing aids is presented. The model, basically a sine-series function, can easily yield closed-form expressions for the amplitudes of the harmonic and intermodulation components of the output when the input is formed of multitone large sound pressure levels. The special case of two-tone equal-amplitude incident pressure level is considered in detail. The results show that the third-order intermodulation component is always higher than the third-harmonic component. The results also show that the input–output functions exhibiting peak clipping exhibit the worst harmonic and intermodulation performance for large sound pressure levels. The simple wide-dynamic range compression (WDRC) input–output function exhibits the best harmonic and intermodulation distortion performance under large sound pressure levels. These results are consistent with the previously reported observations and reveal that there is a correlation between intelligibility of high-level speech and the harmonic and intermodulation performance of the hearing aid under large sound pressure levels.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Acoustics - Volume 71, Issue 3, March 2010, Pages 269–275
نویسندگان
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