denormal floats (was Re: [linux-audio-dev] XAP spec - early scribbles)

[Dave Griffiths]

On Thu, 6 Feb 2003 14:07:06 +0000, Steve Harris wrote
> On Thu, Feb 06, 2003 at 12:18:47 +0100, Dave Griffiths wrote:
> > I had a vague attempt at doing something like this (after noticing that
> > filters filtering silence uses up a lot of cpu). Each sample buffer object
> 
> OT: Thats probably because the zeros weren't 0.0, they were probably
> denormal numbers. If you squash them the filter will run at the same 
> cost as when its processing any other data.

ahah, I was hoping for an explanation :) any ideas on how to combat this, what
the squashing threshold should be?

dave