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Recent content by electricalpeople

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    Acoustic Echo Cancellation

    Please go through the attached documents.
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    ERLE for Acoustic Echo Cancellation.

    Hi everyone, I am working on acoustic echo cancellation which has a double talk detector. During the single talk, the ERLE exceeds 100dB and during double talk around 20dB to 40 dB. I have read few papers and saw that for a good echo cancellar the ERLE should be between 40-50dB. I am going...
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    Mean, variance, and standard deviation.

    Can someone please explain me about the mean, variance and standard deviation of signals(speech signals) and why they are so much important in analyzing a signal? and also the type of distribution like Gaussian or non-Gaussian? and what do you mean by independent components of a signal...
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    [SOLVED] Cross-correlation in matlab without using the inbuilt function?

    can someone tell how to do the cross-correlation of two speech signals(each of 40,000 samples) in the matlab without using the inbuilt function Xcorr and how do I find correlation coefficient? Please be tolerant.Thanks in advance.
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    [SOLVED] Samples by samples cross-correlation(Xcorr)

    Hi Z, I am not sure how fast it works in the real time since right now I am working only on matlab in which there is no delay. But when I showed the code I have written to my instructor he said in the real time this would create some delay by sending all the samples at a time. So he asked me to...
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    [SOLVED] Samples by samples cross-correlation(Xcorr)

    yes, I am bothered about the time it takes for processing the entire 40,000 samples at a time. I am working on the blind source separation. I have an ouput signal which is shat(which is 2x40000). shat(1,:) is the first signal and shat(2,:) is the other signal. I have the input signals S1 and S2...
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    [SOLVED] Samples by samples cross-correlation(Xcorr)

    Hi, I am using the xcorr function for identifying the similarity of the signals. the following is the code, r1 = max(abs(xcorr(S1, shat1,'coeff'))); r2 = max(abs(xcorr(S1,shat2,'coeff'))); if r1>r2 dn=shat2; else dn=shat1; end But the problem is the signals are having 40,000 samples...
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    [SOLVED] Comparison of signals.

    Yes, I am using the matlab. Xcorr is the cross-correlation. How do I find the peaks? Could you be please be clear here? Thanks for the reply. ---------- Post added at 18:57 ---------- Previous post was at 18:05 ---------- Thank you Barry. I got it what you meant. It worked. Thank you so much.
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    [SOLVED] Comparison of signals.

    Hi, I have two estimated(separated)signals and a reference signal. One of the estimated signal is quiet same as the reference signal. I was trying to compare the estimated signals with the reference signal and want know which signal is what. I tried using the correlation but did not work...

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