ESP32 headless acid combo of tb303 + tb303 + tr808 like synths. Filter cutoff, reso, env mod, accent, wavefolder, overdrive within each 303, per-instrument tunings, hi-pass/lo-pass filter and bitcrusher in drums, send to reverb, delay and master compression. All MIDI driven. 44100, 16bit stereo I2S output to the external DAC or 8bit to the built-in DAC. No indication. Uses both cores of ESP32. Cheap ~$10. Consult with midi_config.h to find out and to set up MIDI continuous control messages.
github.com/copych/AcidBox
Tag Archives: Drum
Drum Count ~ Measure Drumset Strokes
Drum Count is a simple tool which analyzes sound in real-time to measure the number of strokes played on a drumset.
sourceforge.net/projects/drumcount

Vintage Drums ~ Free VST Percussion Sounds
Add an authentic edge to your music with this essential collection of vintage drum sounds captured at one of the few remaining analogue recording studios: KERWAX. Discover two stunning kits — a 1970 Ludwig with 26” bass drum (as made famous by John Bonham of Led Zeppelin) and a 1940s custom kit fitted with original calfskin heads for a warm, rounded tone. Produced and engineered by Christophe Chavanon.
labs.spitfireaudio.com/vintage-drums (registration required)
Playtime ~ 10 Toy Instrument Plugin
Playtime is a FREE premium VST created by Daniel of Reflekt Audio. Playtime consist of ten different toy instruments that range from a desktop drum kit with a few toms and a hi hat, to a toy keyboard, a toy banjo, and more! The Playtime VST plugin has multiple blend-able microphones that the user can blend together to create one overall tone. Each instrument was sampled from real toys so you can bet on a unique and interesting toy like sound.
DrumGizmo ~ Multilayered Drum App & Plugin
DrumGizmo is an open source, multichannel, multilayered, cross-platform drum plugin and stand-alone application. It enables you to compose drums in midi and mix them with a multichannel approach. It is comparable to that of mixing a real drumkit that’s has been recorded with a multi mic setup.
Features:
- Stand-alone, Lv2 and VSTi versions available
- Open drumkit file format, allowing the community to create their own drumkits
- Drum velocity, allowing for several different hit velocities for each drum
- Multichannel output, making it possible to mix it just the way you would a real drumkit
- Optional built-in humanizer, analyzing the midi notes, adjusting velocities on-the-fly
- Stand-alone midi renderer, generating .wav files, 1 for each channel
- Stand-alone midi input, making it possible to use DrumGizmo as a software sampler for an electronic drumkit
AGS ~ Advanced Gtk+ Sequencer
Advanced GTK+ Sequencer is intended to use for music composition. It features a piano roll, as well a synth, matrix editor, drum machine, soundfont2 player, mixer and an output panel.
It’s designed to be highly configurable, you may add effects to its effect chain, add or remove audio channels/pads.
You may set up a fully functional network of engines, therefore exists a link editor for linking audio lines.
In conjunction with ags you need a realtime kernel and alsa support. `ags` uses conditional locks to keep several threads in sync that’s why you need at least a preemptible kernel.
Features:
- save or open Advanced Gtk+ Sequencer XML files with XPath support
- add or remove audio engines with adjustable audio channels and pads
- link channels with property dialog
- output panel, mixer, drum and matrix sequencer, soft synth and audio file player
- piano roll with basic notation editing supporting copy & paste
- adjustable BPM
- LADSPA, DSSI and Lv2 support
- export to WAV, FLAC, OGG and others
- multiple sinks like Pulseaudio, JACK, ALSA and OSS
- automation editor
- waveform editor with copy & paste
- capture sound with AgsAudiorec machine
- MIDI instrument input
- import/export to Standard MIDI Files
- OSC content format support
- OSC server for remote control and monitoring

Cloudrum ~ Steel Tongue Drum Plugin
Spitfire Labs ~ Series Of Virtual Instruments
An infinite series of free software instruments, made by musicians and sampling experts in London, for anyone, anywhere. Presented in our own plug-in, they are easy to use, and compatible with any DAW. And in case you missed it — they’re all free.
KickMaker ~ Plugin Drum Synth
KickMaker is a synthesizer designed specifically to create good kick drum sounds. It uses four independent oscillators and a wide range of effects, allowing one to create perfectly customized beats.
Features:
- Four independent oscillators
- Each oscillator has its own ADSR curve
- ADSR curve for mixed signal

CHOW ~ Maximally Truculent Distortion
CHOW is a digital distortion effect designed for maximum truculence, somewhere between a true half-wave rectifier and a noisy vintage compressor. Useful for mixing guitars, drums, even vocals when a heavily degraded sound is desired. Feel free to build and use for your own enjoyment!

Lazy Kenneth ~ Bass Mixing VST
Lazy Kenneth will help those who don’t know how to use, or are too lazy to use sidechain to handle heavy basslines that collide with the bass drum in 4/4 music. That is music where you put a bass drum on all fours, techno, house, trance, minimal, tribal and so on. Put Lazy Kenneth on the bassline track and it will automatically duck the signal when the bass drum hits. You could place a LK on all tracks except the bass drum for some real heavy pumping effect.

DrumTrack ~ Windows Drum Machine
An open source software drum machine for Windows that allows the editing, playback, and mixdown of complete drum scores using audio samples in a variety of formats (WAV, OGG, MP3, AIFF, FLAC, MP2, WMA). Mixdown to WAV audio supported.


