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Self replicating Sounds

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Author	Topic: Self replicating Sounds
TazioSchiesari Member	posted 16 January 2015 02:09 I have recently heard about these interesting synth patches that once set up can run on their own and mutate over time. I haven't found any solid article or video on them. I believe they do extensive use of feedback and dynamic modules. Is anybody using this kind of technique? Is so would you share any though on the topic? [This message has been edited by TazioSchiesari (edited 16 January 2015).] IP: Logged
SSC Administrator	posted 16 January 2015 14:55 The elements you'd need would be: • A Sound with several branch points that could be selected by an EventValue (for example, you could have four Sounds feeding an InterpolateN and the !Interpolate control would determine which of those 4 Sounds passes through that junction. Your Sound would have several junction points, for example !J1, !J2, !J3). • A method for "listening to" or otherwise determining the current state (this could be by extracting features from the audio signal or simply reading the current values of !J1, !J2, etc). • An algorithm for setting the new states of !J1, !J2, etc, based upon the current state. If your algorithm for determining the next state based on the present state is complex (if it's not easy to predict and depends a lot on the initial state), then you might get some very interesting dynamically evolving behavior from the system. Or it could spiral into a fixed point and stick there forever! IP: Logged
pete Member	posted 17 January 2015 11:20 If you want to get a similar effect to actually produce the raw sound from an algorithm (at ample rate you could try starting from the algatone found in the middle of this thread. http://www.symbolicsound.com/cgi-bin/forumdisplay.cgi?action=displayprivate&number=7&topic=000490 This uses feedback to form the self generating waveforms and only uses delays but only one sample long, but can make patterns that don't repeat until one second. Two of the cells are added to try to unlock the algorithm if it gets stuck at plus or minus one. May be adding more of the feedback cells you you could get something that takes much longer to evolve. hope it helps. Pete IP: Logged
SSC Administrator	posted 17 January 2015 11:40 Links to other examples in the complex systems/evolutionary vein: Live cellular automata evolve and form patterns Shift registers with nonlinear feedback generate impulses, waveforms One control shape, 3 timescales, and feedback http://www.symbolicsound.com/cgi-bin/bin/view/Share/Sounds#Algorithmic_Composition http://www.symbolicsound.com/cgi-bin/bin/view/Share/Sounds#Synthesis_ IP: Logged
TazioSchiesari Member	posted 18 January 2015 17:56 Oh how interesting! Thanks SSC and Pete, very informative and creative IP: Logged

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