[LAD] FULL audio-signal path

Dan Mills dmills at exponent.myzen.co.uk
Sun Jul 22 09:48:42 UTC 2007


On Sun, 2007-07-22 at 09:45 +0100, Steve Harris wrote:
> On 21 Jul 2007, at 13:56, Dan Mills wrote:
> > Be very careful how you write float->int conversions (it is not
> > trivial), and work in floating point as far as is possible, there is
> > little reason (other then marketing) to move to doubles (IIR filters
> > possibly excepted).
> 
> Well, I'd qualify that as there's no need to use doubles between  
> modules, there are many DSP processes that work better in double if  
> you can afford the extra memory bandwidth. Filters are one.

Granted. 

> It's generally not doubles in the audio path though, but its things  
> that you're using to modify it, coefficients, phase accumulators and  
> so on.

I was thinking mainly about some commercial DAWs that boast of stupid
word length accumulators for mix buses and the like. I never did
understand that.  

Regards, Dan.






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