کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
754871 | 895897 | 2008 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Time varying forgetting factor for the noise estimation in multi-channel noise reduction
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موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی مکانیک
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چکیده انگلیسی
We introduce a time varying forgetting factor for the noise estimation in multi-channel noise reduction. In conventional multi-channel noise reduction system, the noise statistics are estimated during noise-only periods and kept fixed during speech-present periods. For deciding whether the current frame is speech-present period or not, a voice activity detector (VAD) is usually used. Instead of this conventional scheme that needs an explicit VAD, we adopt a time varying forgetting factor which is parameterized from the normalized cross correlation (NCC). The simulation results show that multi-channel noise reduction using the proposed method yields better performance in several typical objective measures.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Acoustics - Volume 69, Issue 8, August 2008, Pages 751–754
Journal: Applied Acoustics - Volume 69, Issue 8, August 2008, Pages 751–754
نویسندگان
Gibak Kim, Nam Ik Cho,