SoundSheets in Tonfall

March 10th, 2011

I have uploaded a very rough demo of sound-sheets in Tonfall. The idea is to bring real instruments to Tonfall by using samples remaining a reasonable file size.
Usually you might think a single pitched sample can do the job, however pitching a sample one octave already means doubling the speed. It would sound very unnatural.
I decided to take 11 samples with a difference of 6 halftones (covering ~5 octaves). Hence the maximal speed difference (when the note is inside the provided range) is 25%. There is still space for improvements. The duration of each sample is fixed and needs to be small to respect the file-size. By looping a proper range of the samples after a certain attack duration, enough to maintain the characteristic of the instrument, it should reduce file-size again and sound better. However this will then implemented into Audiotool.

I've updated the DemoSuperMario to run SoundSheets. The synth is decoding MP3 in runtime. Samples are taking from Reason. Could be better...

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Listen to the piano.mp3 to get an idea how it works.

Filed under: audio dsp | 10 Comments »



Phase Modulation

October 28th, 2010

Filed under: audio dsp | 11 Comments »