>It's essentially computing a frequency median, >rather than a frequency mean as is the case >with the derivative-power technique described > in my original approach.
So I'm wondering, is there any consensus on what is the best measure of central tendency for a music signal spectrum? There's the median vs the mean (vs trimmed means, mode, etc). But what is the right domain in the first place: magnitude spectrum, power spectrum, log power spectrum or ??? E On Wed, Feb 17, 2016 at 2:40 PM, Evan Balster <e...@imitone.com> wrote: > Dario's adaptive approach is interesting. It's essentially computing a > frequency median, rather than a frequency mean as is the case with the > derivative-power technique described in my original approach. > > Dario, I would suggest experimenting with zero-phase FIR filters if you're > doing offline music analysis. This would allow you to iteratively refine > your median "in-place" for different points in time. > > – Evan Balster > creator of imitone <http://imitone.com> > > On Wed, Feb 17, 2016 at 7:52 AM, STEFFAN DIEDRICHSEN <sdiedrich...@me.com> > wrote: > >> This reminds me a bit of the voiced / unvoiced detection for vocoders or >> level independent de-essers. It works quite well. >> >> >> Steffan >> >> >> >> On 17.02.2016|KW7, at 13:08, Diemo Schwarz <diemo.schw...@ircam.fr> >> wrote: >> >> 1. Apply a first-difference filter to input signal A, yielding signal >> B. >> 2. Square signal A, yielding signal AA; square signal B, yielding >> signal BB. >> 3. Apply a low-pass filter of your choice to AA, yielding PA, and BB, >> yielding PB. >> 4. Divide PB by PA, then multiply the result by the input signal's >> sampling >> rate divided by pi. >> >> >> >> _______________________________________________ >> dupswapdrop: music-dsp mailing list >> music-dsp@music.columbia.edu >> https://lists.columbia.edu/mailman/listinfo/music-dsp >> > > > _______________________________________________ > dupswapdrop: music-dsp mailing list > music-dsp@music.columbia.edu > https://lists.columbia.edu/mailman/listinfo/music-dsp >
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