Processing 1.0 - Processing Discourse - merging multiple signals

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Index › Programming Questions & Help › Sound, Music Libraries › merging multiple signals

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merging multiple signals (Read 1033 times)

kidult Junior Member Offline Posts: 84	merging multiple signals Jun 26^th, 2006, 6:27pm is anyone aware of any dsp algorithms necessary for adding/averaging variable length signals. I would like to merge n number of samples with varying signals lengths into a single signal. is that multiplexing?

Oddible

Re: merging multiple signals
Reply #1 - Sep 16^th, 2006, 6:49pm

I just started using Processing (this is my first post) and I'm looking into ways to do Additive Synthesis. I first downloaded Ess but it doesn't look like I can modify the buffer, only play multiple simultaneous streams (though I'd love to hear otherwise).

I am looking into Jm-etude and JMusic now. This looks like it might be your path as well. There seem to be functions in the jm.audio.synth package which will do what you are looking for. Namely:

public Add(AudioObject[] ao)

This constructor takes any number of AudioObjects as input expecting each of them to be passing in sample data to be summed before output.

kidult Junior Member Offline Posts: 84	Re: merging multiple signals Reply #2 - Sep 17^th, 2006, 10:47pm thats interesting. i wasnt aware of the functions available from that library. you can actually access the buffer in Ess using the buffer or buffer2 functions. did you see the anaylsis example?

Oddible

Re: merging multiple signals
Reply #3 - Sep 19^th, 2006, 11:41pm

My mistake, this function is available in JMusic but not in the jm-Etude library for Processing. jm-Etude seems primarily for MIDI, no synthesis.

Actually, the AudioInput in Ess would allow additive synthesis or merging multiple signals, though you'd have to do the manually merge the samples to an array buffer and then send them back to this input. Also, only one AudioInput can be active at a time.

kidult Junior Member Offline Posts: 84	Re: merging multiple signals Reply #4 - Sep 22^nd, 2006, 5:11pm i posted because i dont know the algorithm for additive synthesis so thats my issue. im aware ess is able to do the dsp though.

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