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

Extralife Instruments ER-99 Web Drum Synthesizer

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2022-09-24 00:00:18

ER-99 is 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.

You can play the drums by pressing the number buttons on your keyboard. Turn the knobs to change the sound of each instrument.

The 16 buttons at the bottom show the sequence for each instrument. Click once to activate a step, and click again to add an accent (indicated by a brighter light). The emphasis of the accented notes is controlled by the "Accent" knob. You can make 64-step sequences by using the BARS buttons to edit subsequent pages.

You can store Sequences and Sound Presets using the menus above. These are stored in your browser's memory and will be recalled the next time you visit (on this computer).

Please be aware that WebMIDI tends to add a latency of 70-100 milliseconds to received notes. When using an external sequencer be sure to compensate in your DAW using track delays.