Shimmer reverb and controlled feedback loop

Date	2017-06-15 18:06
From	"Jeanette C."
Subject	Shimmer reverb and controlled feedback loop
	Hey hey, after some investigation I found one method of creating a shimmer reverb, based on the principle of an outboard effect. input into reverb into pitchshifter (up one octave) back into reverb. The feedback loop of reverb and pitchshifter creates a few problems though. Whatever I do, it very quickly goes into distortion. With that, I can't even think about freezing that sort of reverb. :( Any ideas on how to control/limit the feedback procedure? Best wishes, Jeanette -------- When you need someone, you just turn around and I will be there <3 Csound mailing list Csound@listserv.heanet.ie https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND Send bugs reports to https://github.com/csound/csound/issues Discussions of bugs and features can be posted here

Date	2017-06-15 18:16
From	mskala@ANSUZ.SOOKE.BC.CA
Subject	Re: Shimmer reverb and controlled feedback loop
	On Thu, 15 Jun 2017, Jeanette C. wrote: > The feedback loop of reverb and pitchshifter creates a few problems though. > Whatever I do, it very quickly goes into distortion. With that, I can't even > think about freezing that sort of reverb. :( > > Any ideas on how to control/limit the feedback procedure? Can you do the shimmer and freezing in two steps? One reverb/pitch-shift/feedback with the feedback less than 1, set up to create the shimmer effect with a moderate to long decay, not "frozen." Output of that into a second reverb with the feedback at 1, no pitch shift, set up for the "freeze" effect you've already got working.

Date

2017-06-15 21:54

From

Iain McCurdy

Subject

Re: Shimmer reverb and controlled feedback loop

I would recommend building the FDN reverb (which is what reverbsc is) from first principles, i.e. a load of parallel comb and lowpass filters. You can then place the pitch shifter within the reverb's internal feedback loop and you shouldn't have the same problems with overloading. If you need an example, let me know.

Iain

From: A discussion list for users of Csound <CSOUND@LISTSERV.HEANET.IE> on behalf of Jeanette C. <julien@MAIL.UPB.DE>
Sent: 15 June 2017 17:06
To: CSOUND@LISTSERV.HEANET.IE
Subject: [Csnd] Shimmer reverb and controlled feedback loop

Hey hey,
after some investigation I found one method of creating a shimmer reverb,
based on the principle of an outboard effect.

input into reverb into pitchshifter (up one octave) back into reverb.

The feedback loop of reverb and pitchshifter creates a few problems though.
Whatever I do, it very quickly goes into distortion. With that, I can't even
think about freezing that sort of reverb. :(

Any ideas on how to control/limit the feedback procedure?

Best wishes,

Jeanette

--------
When you need someone, you just turn around and I will be there <3

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Date	2017-06-15 22:43
From	"Jeanette C."
Subject	Re: Shimmer reverb and controlled feedback loop
	Hey hey, I now have a working UDO of a reverb with controlled shimmer and freeze. The only thing that is worrying me slightly, is that stopping the freeze resuylts in a slight pop, eventhough I faded the feedback of reverbsc down to zero. Unfortunately, I don't have access to my site right now, so an upload will have to wait until that's fixed. Thanks to all, who participated in the freezing and shimmering discussions and pointed me into possible directions. Best wishes, Jeanette -------- When you need someone, you just turn around and I will be there <3 Csound mailing list Csound@listserv.heanet.ie https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND Send bugs reports to https://github.com/csound/csound/issues Discussions of bugs and features can be posted here