Free Portable FM Groovebox

DS8 Drumstream is a drum synthesizer and groovebox for the PlayStation Vita. It turns the Vita into a compact drum machine for sketching ideas, building grooves, and performing anywhere. The app is built around eight drum tracks, a step sequencer with up to sixty-four steps, and direct control through the Vita's physical buttons. 

The sequencer supports mute, solo, per-step automation, pattern length control, step copy and paste, metronome, and pattern generation. Individual steps can have their own parameter changes, allowing for accents, ghost notes, tuned percussion, glitch fills, and evolving rhythms. Pattern generation includes Euclidean rhythms, random patterns, alternating steps, every-N triggers, and preset templates.

All sounds are generated in real time. No samples, no wavetables. Each drum voice can be shaped directly, with controls for tuning, decay, drive, pitch, noise, level, and more.

Be aware that DS8 Drumstream is still in active development, so you may encounter bugs, rough edges, and frequent changes. DS8 Drumstream is homebrew software and requires a modified PlayStation Vita capable of installing .vpk files.

What's new in v0.2:

SYNTH ENGINES
FM Kick - 2-operator FM bass drum with ratio, body shaping & compressor _ FM Snare - phase-modulated FM snare with warped oscillator mixing _ Monophonic per-track voice allocation with click-free retrigger crossfades

PROJECT SYSTEM
Save, Load, Save As, Delete, and New via binary .ds8p project format _ Cursor-based naming editor with on-screen popup keyboard _ Unsaved change detection with 3-option confirmation dialogs _ Toast notifications for every project operation

PATTERN GENERATOR
8 seed types: Manual, All On/Off, Alternate, Every N, Euclidean, Random, Presets _ Per-slot velocity + trigger overrides with configurable block length _ Inline pattern preview and Merge/Replace apply modes

TRANSPORT & SEQUENCER
Step Edit - auto-advance 0/1/2/4/8 steps after placing triggers _ Pattern length cycles through 1, 2, or 4 pages (16/32/64 steps) _ Beat-start emphasis dots, page change toasts, CPU overload indicator

STEP AUTOMATION
Precision mode (hold SQUARE for fine D-pad stepping) _ Parameter filter - show only automated params per page _ Consistent analog stick acceleration across all parameters _ Send 1 / Send 2 automation now fully functional

Download here: https://intermynd-instruments.itch.io/ds-8

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