alt Hacker NewsBuilding a TB-303 from Scratch
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I'd love to see a deep dive into the 303 CPU and their replicas like https://www.sonic-potions.com/re303 and https://socialentropy.com/pages/product_qs303
sonic potions has an analysis of the cpu timings here https://sonic-potions.com/Documentation/Analysis_of_the_D650...
Theres also some nice articles about the diode ladder filter in the 303, similar to the one in the vcs3 https://www.timstinchcombe.co.uk/index.php?pge=diode2
I remember playing with Rebirth in the late '90s and then actually finding a real, TB-303, albeit with a bunch of drawn on crap. But it was very functional. Keeping it in a box for my daughter. She will either think it's cool or sell it after I'm gone. If she sells it, hopefully she gets some decent coin.
I'm kinda tempted to give it to my neighbor's son though. He knows about all this stuff and loves it. He'd appreciate it more. He’d also love my Roland D-50. He also comes by the garage to help out with stuff. Like the son I never had.
My daughter, though, does not appreciate this tech stuff whatsoever. Calls my gear room the ‘junk room’ .
My first real soldering project (aside from just making cables) was a x0xb0x TB-303 clone. I somehow built it with a $10 radioshack iron and nail-clippers as flush cutters in an un-air conditioned Boston studio apartment over a summer. Probably not the first deep electronics project, but somehow it worked!
"...in software" should have been appended to the title.
Back in the day, I was quite heavy into the x0xb0x. (https://www.ladyada.net/make/x0xb0x/) It's an open hardware 303 clone by Ladyada and was designed to use as many of the original 303 components as possible. According to those who own both, the sounds are essentially identical. (But the x0x is much easier to use.)
Somewhere in 2006, I was too late the to party to snag one of the original kits, but a little cottage industry formed on the x0xb0x forums to support the community of people who wanted to build and mod their own. Adafruit provided the PCBs, the common components came from DigiKey and Mouser, the rarer components from eBay or other forum members.
I ended up buying enough components to build six, but only ended up building three. The first one I kept, the other two I sold. I recouped my cost with those so I also ended up selling the rest of the components later as my interest in building them waned. I should have held onto those and built the rest with my kids when they got older, since even the replacement components are hard to come by these days and they are still a fun project to build.
How much are you building 'from Scratch' when your language has primitives like diodeLadder(). :)
I'm just joshing - it's very cool!
I was expecting a hardware project, not software. I don't have a real TB-303, just the Behringer clone, and it'd be fun to build something from scratch that sounds similar.
That aside, I've been wanting to play with this kind of music making via code, this is a useful write-up.
The TB-303 of reference to me is still Jeskola TB-303 :)
Back in my day of the demoscene and Buzz...
I think “simulate” would’ve been a more accurate word than “build”.
Once you hear analog perfect imperfection, it is hard to go back to emulators.
No words can describe the feeling of original Yamaha cs-80.
It is very unfortunate as there is no true alternative to a 80kg, age issues ridden, ultra expensive antique device.
It's interesting I briefly thought about getting into "live coding" or Strudel (or Sonic Pi), this kind of thing where you write code to produce music
But as a non-music person and developer I'd rather use an interface like Ableton where you see separate tracks/times line up kind of thing... but aside from that I ended up just getting a music subscription service that you can use in your YT videos which is what I was after.
Everything is a time sink it seems, gotta choose where you put your time into if 40 hrs of your life is taken up by day job already.
The UI for loopmaster looks really good. The color scheme is really pleasing to look at and it is easy to jump right in and start editing stuff.
I've owned a bunch of different synthesizers and used a bunch of DAWs over the years and it was clear to me where I needed to make my edits to affect the signal chain.
We do real-time client-side audio processing in Emurse, and there were definitely a bunch of challenges to overcome there, so it would be interesting to hear more about what went into building the tool.
The fun thing was the Roland Sync. You could sync up all the TB-303, TB-909 and all the others with a 5-pole DIN cable. The sync was badly implemented. It lagged, it had latency.
However!
As soon as you cabled all together their imperfections added up and they started to groove like nothing that has been heard before.
Not an accurate 303 emulation but definitely a good acid line :)
Sounds like a softsynth.
Without having the source to the WASM diodeLadder(), the following is just a guess: they implemented it exactly like every other "Diode Ladder" on GitHub, rather than a true SPICE simulation. Some evidence for that: the CPU usage would explode.
Even though I'm not that familiar with the synth world, I always found it a really interesting field. Websites like this that helps me exploring and learning are amazing :)
I built one for 303 Day! https://tnn1t1s.github.io/day-303/303.html ... comparing notes.
I don't know what this website is made off but not being able to use pgup/pgdown to move around is super annoying.
It’s a nice demonstration of this software but it really sounds very little like a 303
"If you've ever heard the word "acid" in a song, it's probably a reference to the sound of the TB-303"
Ummmm, what? If you've heard the word "acid" in a song, it was definitely not a reference to the 303 and definitely the other use of "acid" like its use on the dancefloor. If you've heard someone describe a song as "acid", maybe it could be a reference to the 303.
This is cool, but I would personally find an og iMac and install rebirth.
303 heads won't be fooled for a second, but it sounds quite cool regardless.
edit: This is, without a doubt, the best soft-synth emulation I know of these days and it's a hell of a lot of fun: https://apps.apple.com/gb/app/pure-acid/id1481283602
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well by building 303, I would really expect building, something this guy do[1], not just simply using a filter in some shitty web app.
TB-303 owner here. If my TB-303 sounded this bad I'd set fire to it ;-)
Really this is just an implementation of a basic oscillator, filter and envelope. No harm in that all and it's more than I could manage - it's fun and nice, but it's nothing like a 303. "Building an acid synth" would be fairer.
The accent and glide are core components of the sound, as is the really quite unique sequencer control - from the strange bendy growls to the classic acid bark the accent brings out. Would have been nice to see a deeper dive into why that is and why it's different from implementing a normal portamento-style glide as many other synths do, like the SH-101 - which cannot sound that close to a 303 due to that glide. Well it's also got a different oscillator and filter, with no accent either, but I don't want that to ruin the story ;-)