<br><br><div><span class="gmail_quote">On 10/13/07, <b class="gmail_sendername">eduard aylon</b> <<a href="mailto:eduard.aylon@gmail.com">eduard.aylon@gmail.com</a>> wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
Hi,<br><br>got something more usable, but still get some sort of grainy sound. I<br>am using a spectral filter in order to obtain a steeper filter and<br>guess the grainy sound comes from there. If someone could comment on
<br>this, I'd be very thankful. Files attached below.</blockquote><div><br><br>Comments? Well I think it's very clever. I also think it's quite normal that this will sound somewhat grainy because you are in fact using a grain-like technique.... And I think it's entirely normal that it turns out to be hard to make a artefact-free brick-wall filter (see articles on how various DAW's handle re-sampling *cough*).
<br><br>THE way to handle re-sampling filtering should be a sinx/x function ( <a href="http://en.wikipedia.org/wiki/Sinc_function">http://en.wikipedia.org/wiki/Sinc_function</a> ), modern hardware converters (which I gather you are after) often use a FIR filter, I think, and as I wrote in my previous note about this you could make one of those using LiSa. In fact once the update Dan just announced arrives I think you could basically feed this;
<a href="http://en.wikipedia.org/wiki/Sinc_filter">http://en.wikipedia.org/wiki/Sinc_filter</a> straight to LiSa's buffer.<br></div><br>Hope that's of some help.<br><br>Yours,<br>Kas.<br></div>