Hi,
firstly thanks to all for the comprehensive replies and insights. Gonna try out some stuff and report back if I got something good.

@Derek: I understand your point, I've never been so found of natural / hardware sound synthesis, but presently I find very interesting to understand the digital process which could allow me to produce certain sounds. Makes me better understand the whole thing, and apart from that, I cannot afford to buy hardware to make dub chords and delays at the moment. I'd love to, but got to spend money in other essential equipment.
I agree with you that this kind of imitation works only to some extent, but it is extremely interesting to me to learn how you can combine different synthesis techniques, so that I can apply them later in other context, maybe less imitative.

Honestly this dub chords stuff is just a curiosity, as I listen a lot of dub don't need to do anything special with it :)

@Roman: backup blues is so good! I'm listening to it since 30mins... thanks for sharing. Really nice Pd sound.

@Pierre: thanks for that! I reckon it clearly explain the point of Derek. :P


Marco






Message: 3
Date: Fri, 29 Oct 2010 11:43:53 +0200
From: Derek Holzer <derek@umatic.nl>
Subject: Re: [PD] dub chords in Pd
To: pd-list@iem.at
Message-ID: <4CCA9759.10206@umatic.nl>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed

A huge part of the old dub sound is the saturation of the delay lines,
usually with some filters to carve up the echo as you suggest, Felix.

But one problem in Pd is that delay lines and filters tend to "blow up"
instead of saturate like the old school gear. One of my biggest problem
patches was a recirculating delay line with a high pass filter.
Inevitably, it would die, killing the DSP chain with NaN output. Only
way to get rid of it was to cut and paste the offending filter and delay
line.

I suppose someone could come up with some DSP wizardry to emulate that
analog saturation. But I have been getting a strange kick out of all
these "how do I imitate" threads...

How do I imitate the sound of a very long tube? How can I waveshape the
sound of an overdriven speaker? Where can I download a physical model of
the sound of water? What kind of algorithms produce the sound of a
Slinky going down stairs (alone or in pairs)?

Is it really so difficult to use the real thing itself? (Of the above
examples, the Slinky might be the most difficult thing to locate in
one's studio...) *Must* everything be emulated in this imaginary,
digital world?

Ahem... I'll go have my coffee now.

D.

On 10/29/10 1:41 AM, Felix Ob?e wrote:
>
> i recall one simple way to create that effect was to use a delay as send effect and then route its output to one channel of the mixer where you could then apply the send effect, creating a loop. the delay then could go on almost forever, and be manipulated using the eq of the channel. i spent quite some time (and dope) with this back then ;-)

--
::: derek holzer ::: http://macumbista.net :::
---Oblique Strategy # 39:
"Cut a vital connection"



------------------------------

Message: 4
Date: Fri, 29 Oct 2010 11:58:07 +0200
From: Roman Haefeli <reduzent@gmail.com>
Subject: Re: [PD] dub chords in Pd
To: Derek Holzer <derek@umatic.nl>
Cc: pd-list@iem.at
Message-ID: <1288346287.3010.109.camel@yoyo4>
Content-Type: text/plain; charset="UTF-8"

On Fri, 2010-10-29 at 11:43 +0200, Derek Holzer wrote:
>  *Must* everything be emulated in this imaginary,
> digital world?

No, of course not. But many people find it interesting to do so and see
a challenge in it. Others see a challenge in re-enacting a baroque
orchestra by using instruments built the same way they were built a few
centuries ago. I don't see any problem with that.

Roman





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End of Pd-list Digest, Vol 67, Issue 112
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--
Marco Donnarumma aka TheSAD
Independent New Media Arts Professional, Performer, Teacher
Ongoing MSc by Research, University of Edinburgh, UK


PORTFOLIO: http://marcodonnarumma.com
LAB: http://www.thesaddj.com | http://cntrl.sourceforge.net | http://www.flxer.net
EVENT: http://www.liveperformersmeeting.net