On , Fons Adriaensen &lt;fons@linuxaudio.org&gt; wrote:<br />&gt; Basically just multiply all samples indices by 8. <br /><br />I understand the indice part. Say I have a recorded sample to upsample : just resample it to a factor 8 with sinc interpolation in eg Audacity?<br /><br />@Gabriel: Yeah I suppose its a table look-up oscillator that I&#39;m doing.<br /><br />Thanks for the replies guys, time to do a bit of implementing / testing / hacking and see what sounds good!<br />Will post back when I&#39;m in need of advice again :) -Harry