MATRIXSYNTH: ER-99 Online Web-Based Roland TR-909 Emulator by Extralife Instruments



Friday, September 09, 2022

ER-99 Online Web-Based Roland TR-909 Emulator by Extralife Instruments


video upload by Extralife

Update: video added above.

"Play the ER-99 free here! https://extralifeinstruments.com/er-99/

Celebrate electronic music history on 9/09 day with ER-99, a web-based instrument 🎛️ based on a famous Japanese drum machine from the 1980s. It was built to celebrate 9/09 day 2022 🎉!

All of the drums are synthesized using the WebAudio API. The hi-hats, crash, and ride cymbals are produced from sampled audio.

The complete source code is available on Github: https://github.com/matthewcieplak/er-99"

Original post:



This one is in via Extralife, maker of the Super Sixteen DIY Eurorack Sequencer, featured in additional posts here.

"This year, to celebrate 9/09 day, I've built a free, open-source analog drum synth you can play in your web browser. It's called ER-99, and you can play it here (works best on desktop devices!)

You can program patches and sequences on the web interface and save them as presets using the menu below the sequencer. (I have also added MIDI input for sync with external sequences).

You can also read the complete source code on Github. It's surprising how simple many of these sounds are to make!

The original Japanese drum machine that inspired this project is an analog sound design masterpiece, and you can read circuit analysis about its clever use of noise and bandpass filters over on Network 909. I've tried to use the same techniques in the digital domain but I'm sure I can tweak them to get even closer sounding: http://www.network-909.de/circuit.htm"

Check out ER-99 here: http://extralifeinstruments.com/er-99/

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