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...for each j and ifft, you'll get the original signal with each frequency component scaled and time-shifted according to what W was (for that j). Anyway, I did some proper testing. I took my headset, bent the microphone arm so it's resting inside the .. uh.. whatever you call that large muffler thing that goes around your ear. This is an important testcase, as a lot of our users have complained about hearing echo that is propagated at the remote end either directly though the air from the "speaker" to the microphone (common with open headsets), and with closed headsets we see...

...ch frequency component scaled and time-shifted > according to what W was (for that j). Yes, that's the Y/y signal in the code. > Anyway, I did some proper testing. I took my headset, bent the microphone > arm so it's resting inside the .. uh.. whatever you call that large > muffler thing that goes around your ear. This is an important testcase, as > a lot of our users have complained about hearing echo that is propagated > at the remote end either directly though the air from the "speaker" to the > microphone (common with open headsets), and with closed...

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Hi, I'm still working on visualizing the echo canceller, but I discovered something that might be interresting. During testing, i did this: Generate a test signal (10+x sine waves per frame), where x increases by one for each iteration, and wraps around at 100. Set the speaker signal for the frame to the test signal. Add 0.5*test signal to the mic signal. When watching the power graph

...W[i*2], and finally the nyquist amplitude is in W[N-1] I took this from how power_spectrum() computes, so I might be off :) >> Anyway, I did some proper testing. I took my headset, bent the microphone >> arm so it's resting inside the .. uh.. whatever you call that large >> muffler thing that goes around your ear. This is an important testcase, as >> a lot of our users have complained about hearing echo that is propagated >> at the remote end either directly though the air from the "speaker" to the >> microphone (common with open headsets), and wit...