دانلود مقاله ISI انگلیسی شماره 53033
عنوان فارسی مقاله

طرح مرمت دامنه و فاز آنی با استفاده از فیلتر کالمن با پیش بینی خطی کارآمد برای تقویت گفتار

کد مقاله سال انتشار مقاله انگلیسی ترجمه فارسی تعداد کلمات
53033 2015 15 صفحه PDF سفارش دهید محاسبه نشده
خرید مقاله
پس از پرداخت، فوراً می توانید مقاله را دانلود فرمایید.
عنوان انگلیسی
Restoration scheme of instantaneous amplitude and phase using Kalman filter with efficient linear prediction for speech enhancement
منبع

Publisher : Elsevier - Science Direct (الزویر - ساینس دایرکت)

Journal : Speech Communication, Volume 70, June 2015, Pages 13–27

کلمات کلیدی
گفتار - دامنه و فاز آنی ؛ فیلتر کالمن - پیش بینی خطی
پیش نمایش مقاله
پیش نمایش مقاله طرح مرمت دامنه و فاز آنی با استفاده از فیلتر کالمن با پیش بینی خطی کارآمد برای تقویت گفتار

چکیده انگلیسی

This paper proposes a restoration scheme for the instantaneous amplitudes and phases in sub-bands by using a Kalman filter with linear prediction (LP). A few important studies have already proved that the phase spectrum in the short-time Fourier transform plays an important role in speech enhancement. Thus, the proposed scheme concentrates on simultaneously restoring both instantaneous amplitudes and phases. The Kalman filter, which is an optimal estimator in this scheme, is used for both instantaneous amplitudes and phases in the sub-band representation to remove the effect of noise. We found that the effectiveness of the Kalman filter depended on accurate estimates of LP coefficients. We propose an effective LP training phase to derive gender and content independent LP coefficients as central processing for Kalman filtering. We carried out objective and subjective tests under various noisy conditions to evaluate the effectiveness of the proposed scheme and compared it with typical methods. The signal to error ratio (SER), perceptual evaluation of speech quality (PESQ), and SNR loss were used as objective measures in these simulations. The mean preference score was used in subjective evaluations. The results revealed that the proposed scheme could effectively improve these objective and subjective measures more than those with typical methods.

خرید مقاله
پس از پرداخت، فوراً می توانید مقاله را دانلود فرمایید.