Re: [LAU] About Algorithms

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To: <linux-audio-user@...>
Date: Sunday, July 17, 2011 - 8:45 am

On Sun, Jul 17, 2011 at 02:03:01AM +0300, Moshe Werner wrote:

> Yet there is one endless discussion between friends and colleges of mine

I assume you refer to the basic _mixing_ algorithm, i.e. summing signals,
and not to e.g. effect plugins. For the latter there is usually a zillion
ways to do things, and of course they will sound different. As to the
former, the basic mixing, this is just a lot of nonsense.

Sad facts are that:

- The pro audio world is today infested with the same type of pseudo-
science that hit the hifi market 25 or more years ago and that makes
some people pay $3000 for a piece of cable and two connectors, or makes
them spend money on machines to replace old and tired electrons by fresh
young ones which sound better.
- The same wave of nonsense now hits also the software world.

The reasons are simple: basic problems have been solved, to create a
'competitive edge' you have to add snake oil.

> My questions would be:

> 1. Is it only me that can't here a difference between different DAWs mixing

Unless some of those algorithms are completely wrong (which would require
quite a high level if ignorance from the designer), nobody will hear any
difference. Those that claim they can should prove it in a blind test.
I know of no such test that ever demonstrated this.

> 2. To the developers out there, what is your opinion? Is there a

There isn't much 'algorithm' to speak of, it's just adding. And single
precision floating point provides all the precision you need. There *are*
some issues if you ar mixing thousands of signals - then some ways of doing
it are better than others. But this doesn't occur in normal audio engineering
practice.

> 3. If there is a difference what's the explanation?

See previous point. Explaining this would lead us very far.

> 4. Analog emulation plugins. How does one "emulate" analog waveforms in a

One doesn't emulate 'analog waveforms'. What's done is to reproduce
digitally the defects of some analog equipment (particular types of
distortion in a compressor for example), or the 'look and feel' of
them. There also recently a wave of 'exact digital copies' of e.g.
Neve equalisers. There's no reason why any of these should be better
than one that is not an 'exact digital copy'.

HTH,

--
FA

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Messages in current thread:
[LAU] About Algorithms, Moshe Werner, (Sat Jul 16, 11:03 pm)
Re: [LAU] About Algorithms, lorenzo cecchi, (Mon Jul 18, 10:40 am)
Re: [LAU] About Algorithms, Fons Adriaensen, (Mon Jul 18, 2:46 pm)
Re: [LAU] About Algorithms, Fons Adriaensen, (Sun Jul 17, 8:45 am)
Re: [LAU] About Algorithms, Ken Restivo, (Wed Jul 20, 3:39 am)
Re: [LAU] About Algorithms, Dale Powell, (Sun Jul 17, 11:25 am)
Re: [LAU] About Algorithms, Paul Coccoli, (Mon Jul 18, 9:55 pm)
Re: [LAU] About Algorithms, Folderol, (Mon Jul 18, 10:03 pm)
Re: [LAU] About Algorithms, Charles Henry, (Tue Jul 19, 3:52 am)
Re: [LAU] About Algorithms, Moshe Werner, (Tue Jul 19, 3:24 pm)
Re: [LAU] About Algorithms, Paul Davis, (Tue Jul 19, 2:54 am)
Re: [LAU] About Algorithms, Paul Coccoli, (Tue Jul 19, 9:47 pm)
Re: [LAU] About Algorithms, Dale Powell, (Wed Jul 20, 4:53 pm)
Re: [LAU] About Algorithms, Paul Davis, (Tue Jul 19, 9:57 pm)
Re: [LAU] About Algorithms, Moshe Werner, (Mon Jul 18, 6:40 am)
Re: [LAU] About Algorithms, Moshe Werner, (Mon Jul 18, 7:19 am)
Re: [LAU] About Algorithms, Erik de Castro Lopo, (Mon Jul 18, 7:38 am)
Re: [LAU] About Algorithms, David Adler, (Mon Jul 18, 9:53 am)
Re: [LAU] About Algorithms, Erik de Castro Lopo, (Mon Jul 18, 10:53 am)
Re: [LAU] About Algorithms, Fons Adriaensen, (Mon Jul 18, 2:56 pm)
Re: [LAU] About Algorithms, David Adler, (Mon Jul 18, 11:56 am)
Re: [LAU] About Algorithms, Erik de Castro Lopo, (Mon Jul 18, 12:11 pm)
Re: [LAU] About Algorithms, Fons Adriaensen, (Mon Jul 18, 3:01 pm)
Re: [LAU] About Algorithms, Paul Davis, (Mon Jul 18, 3:02 pm)
Re: [LAU] About Algorithms, Fons Adriaensen, (Mon Jul 18, 3:12 pm)
Re: [LAU] About Algorithms, David Adler, (Mon Jul 18, 12:14 pm)
Re: [LAU] About Algorithms, Renato, (Mon Jul 18, 10:13 am)
Re: [LAU] About Algorithms, David Adler, (Mon Jul 18, 10:43 am)
Re: [LAU] About Algorithms, Erik de Castro Lopo, (Mon Jul 18, 10:57 am)
Re: [LAU] About Algorithms, David Adler, (Mon Jul 18, 12:01 pm)
Re: [LAU] About Algorithms, Stephen Stubbs, (Sun Jul 17, 2:17 pm)
Re: [LAU] About Algorithms, Dale Powell, (Sun Jul 17, 3:25 pm)
Re: [LAU] About Algorithms, Erik de Castro Lopo, (Sun Jul 17, 8:31 am)