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FFSAF replied to the thread FSAF (Fast subband adaptive filtering) measurement.@sm52 John's advice is generally correct but you asked the wrong guy. As a scientist, I would need to know the detailed measurements of...
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FFSAF replied to the thread FSAF (Fast subband adaptive filtering) measurement.@Berndh Why the noise is different? This is one of the "why" questions I have no answers for. It's all my fault. The REW LP filtering...
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FFSAF replied to the thread FSAF (Fast subband adaptive filtering) measurement.I am glad that FSAF, however imperfect, helps. My experience agrees with @dcibel. Driving a woofer in a 2-way configuration below 2*Fs...
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FFSAF replied to the thread FSAF (Fast subband adaptive filtering) measurement.I finally cleaned up the FSAF & SPKID code and found a way to do joint-time-frequency ReLS regularization on @dcibel samples. It's...
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FFSAF replied to the thread FSAF (Fast subband adaptive filtering) measurement.Re 100 -> 10 vs 20dB: I have made such obvious mistakes so many times... screwing up with the simplest calculations and signs is very...
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FFSAF replied to the thread FSAF (Fast subband adaptive filtering) measurement.Both Sine Sweep and FSAF are already at the CR bound. See Cramer-Rao bound for a detailed explanation of why there are limits to...
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FFSAF reacted to dcibel's post in the thread FSAF (Fast subband adaptive filtering) measurement with
Like.
Read through the document tonight. I like that it was presented in a manner that a basic human like my self could understand, and I... -
FFSAF replied to the thread FSAF (Fast subband adaptive filtering) measurement.As promised, here is a way (one of the possible, no pretenses of being one and only) to explain constant H3, rising THD+N, etc through...
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FFSAF reacted to dcibel's post in the thread FSAF (Fast subband adaptive filtering) measurement with Like.
I think the primarily FSAF does not work well into subsonic frequencies, as Mike suggests in post 134. I think part of my problem may...
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FFSAF replied to the thread FSAF (Fast subband adaptive filtering) measurement.Barkhausen, which is described by the same math as quantum mechanics, is not the simplest way to analyze the problem. Please let me...
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FFSAF reacted to dcibel's post in the thread FSAF (Fast subband adaptive filtering) measurement with Like.
I believe this is a problem inherent to the Satori MW16P, caused by cone-surround interaction to my knowledge. Speaker 2 above was...
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FFSAF replied to the thread FSAF (Fast subband adaptive filtering) measurement.Absolutely correct. BTW, the spike in distortions in Speaker 1 at ~1.3kHz may indicate that the back wall at ~270mm is too reflective...
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FFSAF replied to the thread FSAF (Fast subband adaptive filtering) measurement.I run the same data through MATLAB. The results: Here we also see the dashed line: internal FSAF estimate of the model errors. With...
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FFSAF replied to the thread FSAF (Fast subband adaptive filtering) measurement.Thanks! I've tried before to register on this forum to help John ... but it did not work with my outlook email. Now I tried another -...
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FFSAF replied to the thread FSAF (Fast subband adaptive filtering) measurement.Ok, got it. I did not test FSAF below 20Hz. Not tested - does not work:-) AFAIK, John applies some special tricks to make sine sweep...
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