MultiGrain

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== IDEA ==
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[[Category: Projects]]
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Implementation of real time, time granulation synthesis in Chuck, with the ability to be used in live performance.  The synthesis parameters (grain length, position, position randomness, pitch, and pitch randomness) can be tweaked in real time.
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== DESIGN ==
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SndBuf stores a sound file into a buffer, which is then chucked to a linear envelope for the grains. The envelope used in the sound files below has a rise time that is randomly chosen from 0.45 to 0.5 ms.  This can be altered to change achieve a more varying asynchronous envelope for each grain.  For granular synthesis, grain length is usually from 1 - 100 ms.  The grain length, position in the sound file, the randomness of the position, pitch transposition, and randomness of pitch are the parameters that can be controlled in this patch.  All the parameters were mapped to a midi controller, allowing for real time control of each parameter simultaneously.
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== EXAMPLE SOUND CLIPS ==
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[http://ccrma.stanford.edu/~baeksan/220a/final_project/chiko.wav Original sound file]
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[http://ccrma.stanford.edu/~baeksan/220a/final_project/rand_position.wav Varying randomness of position] - Changing the parameter which controls how far from the starting position the patch should play grains.  This essentially chops up the sound file into desired grain lengths and orders them randomly one after another.  A grain length of 80 ms was used.
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[http://ccrma.stanford.edu/~baeksan/220a/final_project/pitch_shifting.wav Transposing pitch] - Pitch transposition of the grains
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[http://ccrma.stanford.edu/~baeksan/220a/final_project/time_stretching.wav Time stretching]
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[http://ccrma.stanford.edu/~baeksan/220a/final_project/time_stretching_pitch.wav Time stretching with transposition]
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[http://ccrma.stanford.edu/~baeksan/220a/final_project/Time_Stretching-1.wav Time stretching another example]
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[http://ccrma.stanford.edu/~baeksan/220a/final_project/everything.wav Everything all together with reverb control on top]
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[http://ccrma.stanford.edu/~baeksan/220a/final_project/grain.ck Granular Chuck code]
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[http://ccrma.stanford.edu/~baeksan/220a/final_project/grain_control.ck Multiple Grain Instances]
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Current revision as of 16:45, 4 March 2008

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