Opus Databending Drumkit

https://suricrasia.online/opus-databending-drumkit/

by blackle • 3 years ago

106 18 3 years ago

Some missing context: the instruments are generated by Opus codec glitches. https://cybre.space/@SuricrasiaOnline/106633181764596703, https://lethargic.talkative.fish/@suricrasia/statuses/01H6NA...

catapart• 3 years ago

Ahhh, thank you! I was wondering what the seed corresponded to.

Pretty neat little thing! I was just trying to figure out if they were using some novel system to categorize procedural synths as "good", because that seems pretty useful! Still a neat little thing, though!

Aachen2• 3 years ago

I still don't get it. What's an Opus codec glitch? I know roughly how things like jpg, flac, and mp3 work, and worked with Opus via ffmpeg/opusenc, but what makes some sounds a glitch? Can you only hear this when playing the data with certain decoders or so? The page and the posts don't say

justsomehnguy• 3 years ago

My guess would be it's when you chose the codec parameters such the output gets some weird artefacts not present in the original source.

TazeTSchnitzel• 3 years ago

This might be glitching in the sense of “glitch art”, where you deliberately corrupt a compressed file in small ways (flip a few bits here and there, for example) that propagate in interesting ways when decompressed.

MaPi_• 3 years ago

On the projects page (https://suricrasia.online/projects/) it says "Make glitchy beats with randomly generated Opus protocol packets." So I guess it's random data fed into the opus decoder.

jmvalin• 3 years ago

(Opus author here) I'm curious what kind of "glitch" this is referring to.

blackle2• 3 years ago

author here: they are randomly generated packets, extended using the packet loss concealment feature. you can fill a packet with random data and it will still decompress into a sensible sound, and that's where all the sounds in the drum machine come from

cma5• 3 years ago

Lot's of fun. Try this :)

[["56ne","count","plenk","aaa","reck"],2,138,[[194,256,0],[140,4112,0],[281,64,5],[298,257,0],[397,4096,7],[396,8193,14],[393,1088,3]],[[-1,36,0],[476,-18,17],[476,-54,78]]]

tomcam• 3 years ago

Sounds excellent. Thanks! Even the default pattern they use on start up is pretty sick.

pimlottc2• 3 years ago

Doesn’t make any sound on mobile Safari. Layout is pretty good though.

grav• 3 years ago

Works for me. You probably need to unmute the phone.

pimlottc2• 3 years ago

Oh, that would be a good idea.. oops!

JaggedNZ• 3 years ago

[["blah","seed"],11,125,[[187,257,0,1],[25,4176,0],[42,0,5],[50,16512,5],[75,5189,3],[76,16656,7],[87,257,10],[88,257,0],[87,4112,13],[11,272,2],[11,1024,6]],[[-1,0,0],[39,-64,19]]]

BriggyDwiggs42• 3 years ago

Fire ["Jpeg",75,125,[[42,8224,0],[43,8,0],[50,8192,10],[55,4010,7],[55,43690,8],[56,32768,11],[68,8224,8],[68,552,7],[73,8,9],[68,8224,8],[68,544,7]],[[-1,100,2]]]

Opus Databending Drumkit

Related Stories