Re: [music-dsp] DFT by Simultaneous Equations

2014-07-09 Thread Aengus Martin
If you are looking for free online resources- Julius O Smith's text on the DFT is good and very self-contained: https://ccrma.stanford.edu/~jos/st/ Probably not as formal, mathematically, as some of the other suggestions, but it may be a good starting point. Cheers, Aengus. On Wed, Jul 9,

Re: [music-dsp] Simulating Valve Amps

2014-06-17 Thread Aengus Martin
Hi, I've only the vaguest idea of this area but I do find it interesting. From what you said, Nigel, aliasing is the main issue. Is it the case then that amp modeling would be more or less a solved problem if you could sample at arbitrarily high rates? Cheers, Aengus. On Tue, Jun 17, 2014 at

Re: [music-dsp] Calculating the gains for an XY-pad mixer

2013-01-21 Thread Aengus Martin
i don't think this has anything to do with barycentric coordinates, but i thought it might deal with your mixing gain issue: http://music.columbia.edu/pipermail/music-dsp/2010-December/069419.html for me, the issue was splicing more than mixing, but i think this issue of the linear values

[music-dsp] Calculating the gains for an XY-pad mixer

2013-01-17 Thread Aengus Martin
Hi Everyone, This may be a fairly idiosyncratic issue, but I think someone here might be able to comment on the correctness of what I've done. I am implementing a mixer in which the gains of four sounds are controlled using a single XY-pad. There is one sound associated with each corner of the

Re: [music-dsp] Calculating the gains for an XY-pad mixer

2013-01-17 Thread Aengus Martin
with the perception of volume (in this case, trying to keep it the same loudness), you work in decibels, which are a non linear scale, but are linear to the ear. Hope this helps. Someone will surely chime in if i've misled you on the second part :P On Thu, Jan 17, 2013 at 8:59 PM, Aengus Martin