Re: [LAD] on the soft synth midi jitters ...

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To: <linux-audio-dev@...>
Date: Tuesday, October 5, 2010 - 12:50 pm

On Tuesday 05 October 2010, at 14.39.25, Arnout Engelen wrote:
[...]

Not only that. As long as the "fragment" initialization overhead can be kept
low, smaller fragments (within reasonable limits) can also improve throughput
as a result of smaller memory footprint.

Depending on the design, a synthesizer with a large number of voices playing
can have a rather large memory footprint (intermediate buffers etc), which can
be significantly reduced by doing the processing in smaller fragments.

Obviously, this depends a lot on the design and what hardware you're running
on, but you can be pretty certain that no modern CPU likes the occasional
short bursts of accesses scattered over a large memory area - especially not
when other application code keeps pushing your synth code and data out of the
cache between the audio callbacks.

--
//David Olofson - Developer, Artist, Open Source Advocate

.--- Games, examples, libraries, scripting, sound, music, graphics ---.
| http://olofson.net http://kobodeluxe.com http://audiality.org |
| http://eel.olofson.net http://zeespace.net http://reologica.se |
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Messages in current thread:
[LAD] on the soft synth midi jitters ..., cal, (Tue Oct 5, 4:12 am)
Re: [LAD] on the soft synth midi jitters ..., Arnout Engelen, (Tue Oct 5, 7:51 am)
Re: [LAD] on the soft synth midi jitters ..., Arnout Engelen, (Tue Oct 5, 12:39 pm)
Re: [LAD] on the soft synth midi jitters ..., David Olofson, (Tue Oct 5, 12:50 pm)
Re: [LAD] on the soft synth midi jitters ..., Folderol, (Tue Oct 5, 8:22 pm)
Re: [LAD] on the soft synth midi jitters ..., Clemens Ladisch, (Tue Oct 5, 11:58 am)