note generation using audio in

s1m0ne · Posted: Tue Jun 22, 2010 12:40 pm Post subject: note generation using audio in

hi all, here's the result of my work on the machine so far, the idea was to generate a note using the audio input:
- first you hear a (very) short snippet of music (tortoise - standards)
- then you hear the dsp generating two notes (first an A than a G) using the acquired samples

A few results are presented in sequence... thanks for listening !
Simone

chameleon_vs_tortoise.mp3

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Filesize:

6.42 MB

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4:40

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2009 Time(s)

DrJustice · Posted: Tue Jun 22, 2010 7:50 pm Post subject:

Hi Simone!

welcome

to electro-music.com Very Happy

It's an interesting sound you've got there. Unfortunately I don't understand fully what's going on except that a sound is captured and then transformed and played back in some way. I'd love to hear more about what the process is.

DJ
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s1m0ne · Posted: Wed Jun 23, 2010 12:08 pm Post subject:

You got it right, first the data coming for the audio in is stored in memory (and played back), then, when the 'buffer' is full, the acquired data is used to produce the A/G notes (the two long sounds that you hear after the short piece of music).
To generate the notes, the sampled data is 'sliced' into short sequences (whose lenght determines the note frequency) and each 'slice' is reproduced a given number of times; after that the next 'slice' is reproduced, and so on... until all the data in the buffer has been used.

I hope this clears things a little Smile

Simone

DrJustice · Posted: Wed Jun 23, 2010 12:46 pm Post subject:

OK, so it's a kind of granular pitch shifting/synthesis algorithm then. It's cool to hear people using the Chami for experiments thumleft

Do you plan to develop any full soundskins for it?

DJ
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s1m0ne · Posted: Thu Jun 24, 2010 2:06 pm Post subject:

Update: you can connect a midi keyboard to play different notes, on a four octaves range.

Here's the result, thanks for listening !
Simone

chameleon_audio_in_midi.mp3

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5 MB

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5:28

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1987 Time(s)

s1m0ne · Posted: Mon Jun 28, 2010 12:29 pm Post subject:

Another update, I added a midi control for portamento and to define the numbers of iterations for each 'slice'.
Also, I implemented an 'audio in monitor' function, so that it's possible to monitor the audio in, and decide when to 'sample'.
Short audio file attached.
Simone

chameleon_audio_in_controls.mp3

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Filesize:

1.28 MB

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1:24

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1972 Time(s)

vexkon · Joined: Sep 06, 2006 Posts: 15 Location: bosstown

Is this going to be a skin? Thanks for doing this. love the grains Smile

hangnef · Joined: Feb 27, 2018 Posts: 2 Location: USA

Wow, this is awesome! Did it ever get released as a soundskin?