How to create a javascript sequencer using Web MIDI and a MIDI controller
Here's how to create a simple 16 step, 8 track, 8 patterns MIDI sequencer using JavaScript and Web MIDI (and some simple math). Table of contents:
00:00 introduction
00:51 midi basics
01:34 binary numbers
03:30 midi commands: note on
04:47 note off command
05:37 web midi
06:29 web workers
07:23 basic idea how to create the sequencer, and math basics
09:05 how to swing
10:19 document object model
12:13 how to use my sequencer
18:13 conclusion
Links:
My sequencer: https://www.floydsteinberg.com/extens... (right click and show source for more info)
Main script: https://www.floydsteinberg.com/extens...
MIDI specification: http://www.gweep.net/~prefect/eng/ref...
Web MIDI API: https://developer.mozilla.org/en-US/d...
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Here's what I have in my setup at the moment. Want to have that, too? Please use the followings links and support me:
Yamaha EX5 https://www.ebay.com/sch/i.html?_nkw=...
MPC One https://www.thomann.de/de/akai_mpc_on...
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Strymon Volante https://www.thomann.de/de/strymon_vol...
Strymon Iridium https://www.thomann.de/de/strymon_iri...
Zoom MS 70 CDR https://www.thomann.de/de/zoom_multi_...
Korg NanoKontrol 2: https://www.thomann.de/intl/korg_nano...
Korg NanoKey: https://www.thomann.de/intl/korg_nano...
Akai EWI USB https://www.thomann.de/de/akai_ewi_us...
Zoom R24 https://www.thomann.de/de/zoom_r24.ht...
Zoom H5 https://www.thomann.de/de/zoom_h5.htm...
Yamaha MT7 https://www.thomann.de/de/yamaha_hph_...
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