Hi there, i have a flanger guitar effect and I remember that when the battery was almost empty it started making, for a few moments (till the battery died), very interesting and unpredictable noises responding to what i was playing on my guitar. I was wandering if it would be possible to write such an effect in pd and simulate that "lack" of voltage.
yendrrek
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do you have a recording of that effect? what did it exactly do? how did it sound? there is no "empty battery" function in Pd ... yet. marius.
Andrzej Piontek wrote:
Hi there, i have a flanger guitar effect and I remember that when the battery was almost empty it started making, for a few moments (till the battery died), very interesting and unpredictable noises responding to what i was playing on my guitar. I was wandering if it would be possible to write such an effect in pd and simulate that "lack" of voltage.
yendrrek
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Well it's easy to make interesting and unpredictable noises with pd...unfortunately there's an infinity of interesting and unpredictable sounds, do you have an example? I hacked a flanger once to slow the clock rate, maybe that's what you mean, it became a kind of echo machine with a lot of aliasing noise. You could use the [samphold~] object to do that, sampling an audio stream at 1kHz or so.
Martin
From: Andrzej Piontek yendrrek@hotmail.co.uk To: Pure Data pd-list@iem.at Subject: [PD] A "broken" guitar flanger effect recreated in pd Date: Mon, 10 Mar 2008 15:44:32 +0000
Hi there, i have a flanger guitar effect and I remember that when the battery was almost empty it started making, for a few moments (till the battery died), very interesting and unpredictable noises responding to what i was playing on my guitar. I was wandering if it would be possible to write such an effect in pd and simulate that "lack" of voltage.
yendrrek
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Andrzej Piontek wrote:
Hi there, i have a flanger guitar effect and I remember that when the battery was almost empty it started making, for a few moments (till the battery died), very interesting and unpredictable noises responding to what i was playing on my guitar. I was wandering if it would be possible to write such an effect in pd and simulate that "lack" of voltage.
yendrrek
Hi,
Maybe you can simulate the dying battery with a variable resistor ? I think circuit benders call this 'voltage drop', it's a common technique... Once you captured the actual sound/behaviour, you can try modelling it with pd.
Tim
Part of me wants to ask... why bother with the computer when you can make the sound already with something so simple?
Anyways, what you need is either the 'voltage drop' (i.e. connect the + of the battery to the first two pins of a potentiometer, connect the + of the effect power to the last pin and connect the - of the effect power to the - of the battery) or a 'voltage divider' (i.e. connect the
- of the battery to the first pin of the poti, the middle pin of the
poti to the + of the effect power and connect the last pin of the poti to the - of the battery and the - of the effect power...or something like that).
I've always felt that it's quite a bit of work to simulate the nonlinear behaviour of analog electronics in the superlinear world of digital synthesis. Unless you know *heaps* of math. The problem with PD and it's brethren is that it is far too predictable. I don't consider using [random] a way out of this trap, since the results are still linear... i.e. linearly randomized, making them quite characterless.
Probably the simplest way to get a nonlinear kind of sound out of PD is by chaining different oscillators together in feedback AM or FM situations. But since you have to use [send~] and [receive~] pairs to make the feedback loops (to avoid the dreaded "DSP loop detected" message), it's never really responding in realtime to what's going on (like an analog circuit where all the electrons move more or less simultaneously), so it can never really get to this nonlinear nirvana I dream of....
OK, rambled enough... back to work.
d.
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Andrzej Piontek -
Derek Holzer -
marius schebella -
Martin Peach -
tim