hyeewang's articles:

Items(44) /5 Next >> Last >|

how to make nonlinear phase system linear 14 147 (12/10/2009 9:09:40 AM) comp.dsp For a such filter with nonlinear phase ,How to operate or modify (compensate ) to make it linear phase? Thank you in advance! Cheers HyeeWang ... HyeeWang

FFT computation complexity 6 36 (11/9/2009 9:26:09 AM) comp.dsp Consider next the fast LMS algotithm. Each N-point FFT (and IFFT) requires approximately N log2 N real multiplication (Oppenheim and Scafer 1989),where N = 2M. Above, it cited from page 454 ,> ,Third edition b... HyeeWang

linear correlation in frequency domain 1 39 (10/22/2009 9:13:38 AM) comp.dsp How to implement linear correlation in frequency domain in detail? where and which article introduce that? Cheers HyeeWang ... HyeeWang

overlap-save vs. overlap-add 10 77 (10/14/2009 8:40:33 AM) comp.dsp Why overlap-save algo applys more often than overlap-add? What is its advantage comparing with overlap-add? HyeeWang ... HyeeWang

magnitude and phase for minimum phase systems 7 30 (8/21/2009 6:14:04 AM) comp.dsp For minimum phase systems the magnitude uniquely specifys the phase and the phase uniquely specifys the magnitude to within a scale factor. It is cited from the great textbook discrete time signal processing ... HyeeWang

LPC in physiological sense 5 38 (7/24/2009 6:29:06 AM) comp.dsp We can attain the all pole system function of speech from linear prediction(LP). But how to correspond it with the digital model in physiological sense? Where can i download such literature discussing the relat... HyeeWang

Parabola interpolation 12 44 (7/8/2009 8:56:05 AM) comp.dsp I learned a parabola interpolation equation from some articles, but I am puzzled with the rationality. It is as follws. E = I - 1/2*[ R(I+1) - R(I-1)] / [R(I+1) + R(I+1) - 2*R(I)] where, 3 given points is R(... HyeeWang

random length FFT implementation 1 57 (6/22/2009 7:18:09 AM) comp.dsp Any random length FFT algorithm can work? Here I am emphasizing a FAST algo and implementation other than ordinary DFT. Where can I download such a FAST FFT algo and implementation (c or matlab)? HyeeWang ... HyeeWang

The amplitude frequecy reponse of modulated LP filter 3 31 (6/17/2009 7:02:15 AM) comp.dsp After being modulated with a sinusoid signal with the amplitude of 1, why the amplitude frequency response of a low pass filter reduced to its half? Keep the amplitude of the sinusoid signal to be 1 unchangedl... HyeeWang

pitch question 6 37 (6/15/2009 8:18:31 AM) comp.dsp Here are two questions about pitch retrieval method, which puzzled me for a long time. 1. Since pitch is a kind of subjective and perceived factor, how it can be searched by computing ? 2. Let us assume pitch... HyeeWang

hyeewang's replies:

Items(21) /3 Next >> Last >|

Compression artifacts 5 28 (5/4/2009 8:08:00 AM) comp.dsp Compression artifacts in compressed audio typically show up as ringing, pre-echo, drop-outs, warbling, metallic ringing, an underwater feeling, hissing, or "graininess". How and when the artifacts above occure... hyeewang (87)

Google group category 8 28 (5/8/2009 2:30:43 AM) comp.dsp How the google groups are sorted? How to reach the specified group ( such as comp.dsp) from root directory? I wonder whether you can catch my true idea. Then I give a pun to illustrate it. I can reach a speci... hyeewang (87)

the polar and zero of frequency response 2 39 (5/13/2009 8:20:15 AM) comp.dsp In such LTI system equation, the polar points make the amplitude of transfer function to be infinite, and in contrast to that, the zero points make it to be zero. But from the frequency response figure which i... hyeewang (87)

Cepstrum question 1 33 (5/20/2009 2:29:28 AM) comp.dsp Some questions about cepstrum are here. Let us take a example to illustrate it. Suppose a speech signal x(n) with length 256, n = 0--255, with fs = 8000, thus the sampling period is 1/fs = 0.0125s. Let's tak... hyeewang (87)

formant phenomenon 4 57 (5/21/2009 3:37:25 AM) comp.dsp 1. Is formant specific unique phenomenon of vowel? whether all phonemes have such formant? 2. What is physical meaning of formant bandwidth? That is, what does formant bandwidth mean? Regards HyeeWang ... hyeewang (87)

reverberation time measurement question #2 10 46 (6/1/2009 8:28:37 AM) comp.dsp In order to provide a reproducible parameter, a standard reverberation time has been defined as the time for the sound to die away to a level 60 decibels below its original level. The reverberation time can be ... hyeewang (87)

Parabola interpolation 12 44 (7/8/2009 8:56:05 AM) comp.dsp I learned a parabola interpolation equation from some articles, but I am puzzled with the rationality. It is as follws. E = I - 1/2*[ R(I+1) - R(I-1)] / [R(I+1) + R(I+1) - 2*R(I)] where, 3 given points is R(... hyeewang (87)

LPC in physiological sense 5 38 (7/24/2009 6:29:06 AM) comp.dsp We can attain the all pole system function of speech from linear prediction(LP). But how to correspond it with the digital model in physiological sense? Where can i download such literature discussing the relat... hyeewang (87)

magnitude and phase for minimum phase systems 7 30 (8/21/2009 6:14:04 AM) comp.dsp For minimum phase systems the magnitude uniquely specifys the phase and the phase uniquely specifys the magnitude to within a scale factor. It is cited from the great textbook discrete time signal processing ... hyeewang (87)

FFT computation complexity 6 36 (11/9/2009 9:26:09 AM) comp.dsp Consider next the fast LMS algotithm. Each N-point FFT (and IFFT) requires approximately N log2 N real multiplication (Oppenheim and Scafer 1989),where N = 2M. Above, it cited from page 454 ,> ,Third edition b... hyeewang (87)