>> The buffer must be read at a variable speed, Do you mean it has to be played out at higher sample rates ?
>> how long will it take to play the whole buffer If you can derive an average rate out of it then you can determine it. -ben ________________________________ From: music-dsp-boun...@music.columbia.edu <music-dsp-boun...@music.columbia.edu> on behalf of Maximiliano Estudies <maxiestud...@gmail.com> Sent: Tuesday, February 6, 2018 8:15 PM To: music-dsp@music.columbia.edu Subject: [music-dsp] Reading a buffer at variable speed I am having trouble with this concept for quite some time now, I hope that I can explain it well enough so you can understand what I mean. I have signal stored in a buffer of known length. The buffer must be read at a variable speed, and the variations in speed have to be exponential, so that the resulting glissandi are (aurally) linear. In order to do that I came up with the following formula: x[t] = t * sample_rate * end_speed^(x[t] / T) where T is the total length of the buffer in samples. This doesn’t seem to work and I can’t understand why. And my second question is, how can I get the resulting length in milliseconds? (how long will it take to play the whole buffer) I hope I managed to be clear enough! Maxi -- Maximiliano Estudies +49 176 36784771 maxiestudies.com<http://maxiestudies.com>
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