Re: [LAD] Wavetable synthesis : Creating fat wavetables

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To: Harry van Haaren <harryhaaren@...>
Cc: <linux-audio-dev@...>
Date: Saturday, August 25, 2012 - 9:12 am

On Sat, Aug 25, 2012 at 12:44:12AM +0100, Harry van Haaren wrote:

Basically just multiply all samples indices by 8. For example if
when using the original you would need the value at 3.4, and
interpolate between samples 3 and 4, in the upsampled table that
becomes 3.4 * 8 = 27.2 and you interpolate between samples 27 and
28. The run-time CPU load is just the same, you only need more
memory. But since now you can interpolate witout artefacts, you
don't need a perfect fit of K cycles in N samples, and that allows
the waves to be shorter.

Ciao,

--
FA

A world of exhaustive, reliable metadata would be an utopia.
It's also a pipe-dream, founded on self-delusion, nerd hubris
and hysterically inflated market opportunities. (Cory Doctorow)

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Messages in current thread:
Re: [LAD] Wavetable synthesis : Creating fat wavetables, Gabriel M. Beddingfield, (Sat Aug 25, 2:33 pm)
Re: [LAD] Wavetable synthesis : Creating fat wavetables, Julien Claassen, (Fri Aug 24, 7:39 pm)
Re: [LAD] Wavetable synthesis : Creating fat wavetables, Fons Adriaensen, (Fri Aug 24, 10:49 pm)
Re: [LAD] Wavetable synthesis : Creating fat wavetables, Harry van Haaren, (Fri Aug 24, 11:44 pm)
Re: [LAD] Wavetable synthesis : Creating fat wavetables, Fons Adriaensen, (Sat Aug 25, 9:12 am)
Re: [LAD] Wavetable synthesis : Creating fat wavetables, Robin Gareus, (Fri Aug 24, 10:18 pm)
Re: [LAD] Wavetable synthesis : Creating fat wavetables, Harry van Haaren, (Fri Aug 24, 11:26 pm)
Re: [LAD] Wavetable synthesis : Creating fat wavetables, Devin Anderson, (Fri Aug 24, 9:05 pm)
Re: [LAD] Wavetable synthesis : Creating fat wavetables, Julien Claassen, (Fri Aug 24, 8:43 pm)