Re: [music-dsp] idealized flat impact like sound

What you are describing sounds a bit like a description of thunder: a sharp, wideband pulse followed by reverberant randomness, (though not spectrally flat due to environmental absorption). Perhaps you can use that as a model? David Reaves Recklinghausen, Germany On Wed, 27 Jul 2016 19:00:02

Re: [music-dsp] confirm 29f9d07aca460a7584879c1831b9e3298c4

Perhaps it would be as well for the unsubscribe function on the list management page to be parked behind a password, rather than accessible without? At the moment, anyone can do this kind of drive-by unsubscription of anyone whose email address they have, without even going to the trouble of

Re: [music-dsp] confirm 29f9d07aca460a7584879c1831b9e3298c4

This kind of unsubscribe abuse is unfortunately difficult to handle. Password protected unsubscribe fails because geniune unsubscribers almost always forget their password. I started to look at the GNU Mailman documentation. There are some options to discuss with both Doug and Robert. Meanwhile

Re: [music-dsp] idealized flat impact like sound

On 28/07/2016 3:00 AM, gm wrote: I want to create a signal thats similar to a reverberant knocking or impact sound, basically decaying white noise, but with a more compact onset similar to a minimum phase signal and spectrally completely flat. Maybe consider mixing multiple signals together:

Re: [music-dsp] confirm 29f9d07aca460a7584879c1831b9e3298c4

Or a captcha, for that matter? > On 28 Jul 2016, at 10:40, gwenhwyfaer wrote: > > Perhaps it would be as well for the unsubscribe function on the list > management page to be parked behind a password, rather than accessible > without? At the moment, anyone can do this

Re: [music-dsp] BW limited peak computation?

> Because I don't think there can be more than one between any two > adjacent sampling times. > > > This really got the gears turning. It seems true, but is it a theorem? > If not, can anyone give a counterexample? > I don't know whether it's a classical theorem, but I think it is true.

Re: [music-dsp] idealized flat impact like sound

On Wed, Jul 27, 2016 at 10:33:40PM +0200, gm wrote: > [...] > So my question for now is: how can we synthesize completely flat > decaying noise? > (is it even possible?) I think the modulation between expdec and white noise is ok: T = 1 / samplerate p = exp(log(0.001) * T / t60) y = (1 -

Re: [music-dsp] idealized flat impact like sound

sorry, that's a decay, so out is "(1 - y) * rand()": T = 1 / samplerate p = exp(log(0.001) * T / t60) y = 1 + p*(y1 - 1) y1 = y out = (1 - y) * rand(-1.0, 1.0) * gain ___ dupswapdrop: music-dsp mailing list music-dsp@music.columbia.edu

Re: [music-dsp] Supervised DSP architectures (vs. push/pull)

Haha, Ross, I'm not sure I'll be going *quite* so deep just yet. My most pressing need is simply to access more processing power than one callback will give me (without underflow). To that end, I'll be setting up a signaling system whereby one stream can have "helper threads" that are notified

Re: [music-dsp] idealized flat impact like sound

Following the comments regarding the exponential modulated noise segment; My experience is that all such actual segments will be spectrally coloured, because of course they contain a truncated set of random values. The only theoretically "flat" exciter is the Dirac impulse. But because it

Re: [music-dsp] idealized flat impact like sound

I used both the minimum phase version of a band limited impulse and also the "empty" exp curve the exp decay curve has more energy towards DC depending on its witdh but you dont hear that like the "empty" exponential decay segment and dirac impulse the minimum phase pulse lacks

Re: [music-dsp] idealized flat impact like sound

My problem was that a short segment of random isn't spectrally straigh-line flat. If you feed this into a resonator (waveguide) you can hear a difference between one random grain and another with another random sequence. This is usally a desired effect that makes the sound alive, but in my