dcibel's latest activity
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Ddcibel reacted to FSAF's post in the thread FSAF (Fast subband adaptive filtering) measurement with
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I am glad that FSAF, however imperfect, helps. My experience agrees with @dcibel. Driving a woofer in a 2-way configuration below 2*Fs... -
Ddcibel replied to the thread FSAF (Fast subband adaptive filtering) measurement.I did! Exclamation point! Both of my files sound the same, only audible difference is amplitude. Adjust for same volume and they...
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Ddcibel replied to the thread FSAF (Fast subband adaptive filtering) measurement.Sorry, perhaps I did not complete a perfect replication of your test. When measuring with the pre-filtered file, I turned filters in REW...
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Ddcibel replied to the thread FSAF (Fast subband adaptive filtering) measurement.Difference in level was 3dB between pre-filtered and REW filtered measurement. When I adjusted the level by 3dB, overall distortion...
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Ddcibel replied to the thread FSAF (Fast subband adaptive filtering) measurement.If I understand correctly, you are comparing two "identical" files, one is a pre-filtered file, and the other is filtered by REW. I...
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Ddcibel reacted to John Mulcahy's post in the thread REW Beta Release REW API beta releases with Like.
Builds updated today (beta 59) with these changes: Added: Multi-input capture has options to align the individual measurements to the...
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Ddcibel replied to the thread FSAF (Fast subband adaptive filtering) measurement.Overlay of the 3 measurements in the previous post. Frequency response of filters applied.
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Ddcibel replied to the thread FSAF (Fast subband adaptive filtering) measurement.Much testing over the past day. Comparing my large condenser to small condenser, the large condenser provides a bit better noise floor...
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Ddcibel replied to the thread REW Beta Release REW API beta releases.Hi John, As a small feature request, could you make the SPL level calibration window open off to the side of the SPL meter display...
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Ddcibel replied to the thread FSAF (Fast subband adaptive filtering) measurement.Precisely, so I would make a few for my commonly used measurement distances. For example, I usually stick to 315mm for distortion, as it...
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Ddcibel reacted to FSAF's post in the thread FSAF (Fast subband adaptive filtering) measurement with Like.
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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Ddcibel replied to the thread FSAF (Fast subband adaptive filtering) measurement.Terrific! I haven't returned to any FSAF testing, but am off work next week so I hope to complete some further evaluation in a quiet...
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Ddcibel replied to the thread FSAF (Fast subband adaptive filtering) measurement.I think it's not too difficult to use a different calibration file for various different situations as it is. Calibration file is easily...
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Ddcibel reacted to FSAF's post in the thread FSAF (Fast subband adaptive filtering) measurement with Like.
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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Ddcibel replied to the thread The measurement distortion is very high error.Don't expect low distortion at 10Hz...limit frequency range of the measurement will prevent the high distortion warning. Where you've...
