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Comment by errozero | Hacker News Reader

Acid Machine is a web based tool for creating Acid Techno. It consists of 2x 303 style synths and a drum machine. I'm currently working on a song mode so you can string patterns together, record automation and save your finished track.

Hit the randomize button for some instant results.

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Excellent!

Any other synths you could put in? I'm guessing a PPG/Waldorf or Prophet VS or DX7 would send the CPU to 140 deg. Celsius.

BTW /r/edm liked it: http://www.reddit.com/r/edmproduction/comments/2yphc8/a_303_... (pretty funny)

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oh, and anybody want to tweak on a basic 2 oscillator analog, here's one in Flash: http://www.audiosauna.com/studio/

This is awesome!

Feature request: export the sample to wav/mp3 :)

Hey thanks, I'm working on that as well as the ability to create a full length track and save it with a unique url to share with with people.

Record to wav is now possible! :)

That's really impressive. Randomize even makes pretty compelling loops.

It gets bogged down for me and starts stuttering and losing the beat when I have all three tracks working (i7 system with 8GB RAM, running current Firefox developer release on a modern Linux system). I wouldn't know where to start on troubleshooting performance problems.

I get that too on Firefox, I'm hoping to try out the web-worker idea suggested by meandave to fix it. At the moment it works much better on Chrome for some reason.

(Firefox Web audio developer here)

It's because, we've not optimised our implementation _at all_ (I'm exaggerating a bit but you get the idea).

That said now that Firefox's implementation is in good shape in terms of spec compliance, we have started (very recently, one week or something) to work on performance.

That's good to hear. Just noticed your username and remembered you commented on a stack overflow thread of mine whilst I was developing this, about 24db filters: http://stackoverflow.com/questions/28502028/web-audio-api-24...

Pretty groovy! The 303 sound is good, and I say that with a real one sitting right here.

Thanks! This article helped quite a bit with the 303 sound: http://www.firstpr.com.au/rwi/dfish/303-unique.html Also played about with rebirth a lot whilst creating this.

Yeah, Robin Whittle probably knows more about the 303 than anyone outside of Roland Japan, and he's very generous with his knowledge too. You should be proud, you did an excellent job.

This is very bloody good, well done. One of the best Show HN's I've seen in a while.

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