[haiku-development] Re: Mixer resampler API

  • From: pulkomandy <pulkomandy@xxxxxxxxxxxxxxxxx>
  • To: haiku-development@xxxxxxxxxxxxx
  • Date: Wed, 18 Aug 2010 22:33:23 +0200

> One problem with simple interpolation is that it introduces high frequency 
> noise, so it has to be followed by a low-pass filter. I haven't looked at 
> the code, but if you haven't done that, it would explain the poor quality.

Yes, but looking at the available menu in mixer preference, I feel it
would be silly to do interpolation with a low-pass filter, as it would
mean more processing than the lanczos implementation (which does both in
one operation).

> A quick look at Wikipedia suggests that the Lanczos filter is a low-pass 
> filter, so I guess better quality can be expected when using it.

I'm trying, let's see how it goes.

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