[PD] microtonal pitch glide using Risset's bell

[Andrew Faraday]

Hey Jb
I've just had a look and fixed if for you. It was one of the classic Pd Gotchas. Basically the frequency you wanted to change (from the outside) was going direct from a recieve to the cool right inlet of a [*] object. Meaning it would require an extra bang or a change in the argument number to take effect. Just swapped the wires into this object round and it works fine. 
Oh, the [pd line] is just my testing system, running up and down from midi 40 to 100, obviously you'll want to change this to work with your patch. 
Sorted
Andrew
Date: Wed, 17 Nov 2010 16:50:12 +0000
Subject: Re: [PD] microtonal pitch glide using Risset's bell
From: jbeezez at gmail.com
To: jbturgid at hotmail.com

Btw,

It's 150ms not 15 - durr.

On 17 November 2010 16:34, J bz <jbeezez at gmail.com> wrote:

Hi Andrew, 

Thanks for weighing in.

I tried a couple of variations of that but it doesn't work.  Something to do with the sound being triggered from a bank of partials I think.  Would really appreciate you (or someone) having a look if you have a minute.



Hey Lorenzo,

No one said this was going to be easy:)

Cheers,

Jb

On 17 November 2010 10:50, Andrew Faraday <jbturgid at hotmail.com> wrote:







Okay, 
I've not had a chance to look at your patch but the typical method is to use [line], or [line~] (which solves some in-continuity) 
(your target pitch)|

[$1 15(|[line~]|(your pitch control)
You can make this variable by using something like
(target pitch)       (glide time)

|                       /|                     /|                   /|                 /[ pack  f  f ]| [line~]
I would also note that 15ms is a very short time for a change in pitch or volume, you probably won't hear an audio incontinuity(click) because of this slide, but you might well not be able to experience it as a pitch slide if it's under around 30ms. 


Andrew
Date: Wed, 17 Nov 2010 10:37:35 +0000
From: jbeezez at gmail.com
To: pd-list at iem.at


Subject: [PD] microtonal pitch glide using Risset's bell

Dear List,

I have a basic rip of the Risset Bell from the tutorial patches and I can't seem to figure out how to make the overall pitch glide from one microtone to another from midi number 72 to 72.4 over 15ms, for example?




A month old baby and a looming deadline has turned my brain into mush...

Patch is attached (it's for an upcoming performance of John Cage's 'Ryoanji').

All good wishes,

Julian





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