[LAU] audio latency question

[Paul Davis]

On Sun, Mar 20, 2011 at 1:25 PM, andy baxter
<andy at earthsong.free-online.co.uk> wrote:
> Hi,
>
> I am thinking about a possible design for the second version of the position
> sensing drum pad I have been working on, and I have a question about
> latency. I am working around the assumption that 10ms latency is about the
> worst it can get before people start to notice it in practice, so I am
> thinking of building the pad in a way where the normal latency is about 1ms,
> but it degrades to between 10-15 ms in the very worst case (many
> simultaneous strikes and pressure variations across the pad). Allowing this
> level of degradation would make it possible (I think) to use an arduino
> rather than a faster processor, which would be nice.
>
> So the question is, where does this 10ms figure come from, and is it a
> reasonable working value? I have picked it up somewhere but I'm not exactly
> sure where.

what you're discussing is not only about latency. i respectfully ask
that you read this blog post and then follow the links to the original
paper:

http://createdigitalmusic.com/2008/12/intimate-control-multi-touch-new-models-and-what-2009-is-really-about/

if your pad is only a trigger, its not so relevant, but if its
providing more than just a trigger then randy's ideas are really
important, i think.