[PD] Combat aliasing!

Frank Barknecht fbar at footils.org
Wed Mar 31 22:18:02 CEST 2010

On Wed, Mar 31, 2010 at 06:32:04PM +0200, Derek Holzer wrote:
> I was thinking about this the other day.... is it possible to have  
> aliasing with Karplus-Strong? Because it's a delay line, nothing is  
> being played back at any higher rate than it was sampled at, so no  
> aliasing should be possible. Right? Math-gurus correct me if I'm wrong.
> Otherwise, any signal generator needs to be bandlimited or oversampled:
> http://en.flossmanuals.net/PureData/Antialiasing
> http://en.flossmanuals.net/PureData/GeneratingWaveforms
> Frank Barknecht has some spliced-transition trick he uses as well, I'm  
> sure it will come up in a reply or two on this thread as well...

"My" trick is from Miller's book and also part of the docs shipped with Pd.
Just read the last (?, from memory) chapter in the book about classical
waveforms for a lot of valuable insight in the aliasing problem.


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