<div dir="ltr">Hi Eran, the order-perc.pd example in that same 06-timbre-ordering directory shows how to do those kinds of things. It packs several features together into one mixed feature list, normalizes the feature database, and provides controls for weighting the different features via the "weights" message to [timbreID].</div>
<div class="gmail_extra"><br><br><div class="gmail_quote">On Fri, Jan 3, 2014 at 7:03 AM, Eran Sachs <span dir="ltr"><<a href="mailto:eransachs@hotmail.com" target="_blank">eransachs@hotmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div><div dir="ltr">Hello Joćo,<div>Take a look at example 06 in William;s tID, which does timbral ordering of small grains quite similar to what you are describing. </div><div>I was really happy with what I got, but I had a vaguer idea in mind...</div>
<div> </div><div>William, is there a way to choose certain "descriptors" for the reordering? Or to give different "weight" to certain parameters?</div><div><br></div><div>Happy 2014, list!</div><div>Zax</div>
<div><br></div><div><br></div><div><br><div> <br><br><div><hr>To: <a href="mailto:william.brent@gmail.com" target="_blank">william.brent@gmail.com</a><br>Date: Fri, 3 Jan 2014 11:30:17 +0100<br>From: <a href="mailto:jmmmpais@googlemail.com" target="_blank">jmmmpais@googlemail.com</a><br>
CC: <a href="mailto:pd-list@iem.at" target="_blank">pd-list@iem.at</a><br>Subject: Re: [PD] suggestions for spectral "weight" anaylsis<div><div class="h5"><br><br>
<div>Hi William and all,</div><div><br></div><div>I thought there would some relevant things in your library. I'll look into your suggestions later.<br></div><div>I don't have a patch that other people can look at, but I can try to explain the context a bit better:</div>
<div>- I have a sound of ~40s spoken voice. I'm going to split it in fragments (for now 100ms each) and reorder them </div><div>- one of the possibilities of reordering the fragments would be to have a "continuous" timbre change in the end. E.g. going from noisy consonants to clean vowels</div>
<div>- for the analysis, I guess a mixture of pitch and harmonicity (don't know yet in which order it should be done) would be adequate</div><div><br></div><div>I noticed your objects work in real time. As the analysis is to be done before the performance, I guess I'll either let the sound play throughout to get the analysis data, or then I'll divide the fragments through x analysis patches, to make it run x times faster.</div>
<div><br></div><div>In this case it is spoken voice, but I guess it could by anything else.</div><div><br></div><div>Best,</div><div><br></div><div>Joćo</div><div><br></div><blockquote style="border-left:#0000ff 2px solid;padding-left:1ex">
<div dir="ltr">Hi Joćo,<div><br></div><div>A measure that would give something near 1.0 for white noise and near 0 for a sine wave would be "spectral flatness", which is in the timbreID library. But if you're looking to see how well a spectrum's partials line up harmonically, you won't find that in timbreID yet. One quick option would be to use sigmund~ to get the current pitch, then search the spectrum for the amount of energy in bin ranges related to the expected set of harmonics. Compare that with energy in non-harmonic bins. But then, for things like gongs that sound "pitchy" but have inharmonic spectra, that won't be much help. Depends a lot on what you're trying to do.</div>
<div><br></div><div>You *might* find specSpread~ useful, which measures how widely or tightly energy is concentrated around the spectrum's center of gravity. It's in units of Hz though.</div><div><br></div></div>
<div>
<br><br><div>On Thu, Jan 2, 2014 at 12:38 PM, Joćo Pais <span dir="ltr"><<a href="mailto:jmmmpais@googlemail.com" target="_blank">jmmmpais@googlemail.com</a>></span> wrote:<br><blockquote style="border-left:1px #ccc solid;padding-left:1ex">
Hello,<br>
<br>
I wanted to ask if there are any suggestions for spectral "weight" analysis.<br>
With "weight" I mean a factor which would measure the harmonicity of a sound - e.g. white noise being 1, and a sinus/silence 0. Surely it exists a propper word for this already, but I don't know one.<br>
<br>
Is there any external or patch around that does something similar?<br>
<br>
Thanks,<br>
<br>
jmmmp<br>
<br>
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</blockquote></div><br><br clear="all"><div><br></div>-- <br>William Brent<br><a href="http://www.williambrent.com">www.williambrent.com</a><br><br>Great minds flock together<br>Conflations: conversational idiom for the 21st century<br>
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