Perc8 vs Choppa

Perc8 is a professional drum synthesizer and step sequencer designed for techno, acid, industrial, and experimental electronic music. Build anything from tight loops to complete arrangements with eight independent synthesizer voices, deep per-step control, flexible effects, and a dedicated master bus. SOUND DESIGN Choose from a broad collection of kick, snare, clap, cymbal, hat, percussion, noise, tonal, and synth engines. Five purpose-built FM engines cover FM Kick, Snare, Hat, Perc, and Tone. Digital Perc adds a 16 × 16 WAVE × SHAPE sound space for animated digital percussion. Start quickly with 40 curated factory voice presets, then reshape them through Perc8’s complete synthesis and processing architecture. Every voice provides eight expressive engine macros plus resonant filters, EQ, drive, amplitude shaping, dual LFOs, effects sends, and output routing. Optional Drive Match on each voice and the master bus helps you judge saturation character without added loudness dominating the comparison. SEQUENCING & ARRANGING Program beats with probability, trigger conditions, fills, retriggering, ties, variable pattern lengths, and up to 16 parameter locks per step. Arrange pattern entries into Blocks, set repeats and Fill behavior, mute voices independently per entry, and draw long-form parameter automation with multiple interpolation shapes across the chain. ADAPTIVE WORKSPACE Perc8 adapts its editor to the available space. Work quickly in the compact iPhone and AUv3 layouts, or use dedicated full-screen Pattern, Chain, FX, and Master workspaces on iPad. Controls remain direct and touch-focused across standalone and hosted use. EFFECTS & MIXING Process voices through a dub-style stereo delay, algorithmic reverb, and chorus/flanger modulation, all with sequencer automation. Mix all eight voices with level, pan, mute, solo, EQ, sends, and flexible bus routing. Finish the kit with stereo image controls, master EQ, drive, Drive Match, trim, and limiting. STANDALONE & AUV3 Use Perc8 as a standalone instrument or as an AUv3 plug-in in hosts such as AUM. Route voices to individual outputs, synchronize to host transport, automate parameters, control voices over MIDI, and save complete projects, kits, or individual voice presets. KEY FEATURES • Eight independent drum-synth voices • FM Kick, FM Snare, FM Hat, FM Perc, and FM Tone • 16 × 16 Digital Perc WAVE × SHAPE sound space • Broad analog-inspired, digital, metallic, noise, and tonal engine collection • Eight musical macros per engine • Resonant filters, EQ, drive, amplitude shaping, and dual LFOs per voice • Optional voice and master Drive Match • Probability, conditions, fills, ties, retriggering, and up to 16 parameter locks per step • Block-based arrangements, per-entry voice mutes, and timeline automation • Delay, reverb, and chorus/flanger effects • Eight-channel mixer and complete master bus • Multiple audio outputs and MIDI routing • Standalone and AUv3 operation • Adaptive iPhone, iPad, and hosted layouts MANUAL & TUTORIALS See the Help page in Perc8 for the full manual and guided workflows, or visit terrarum.net/perc8.html.

Record into your mic. Chop it to pads. Play it like an instrument. Now scratch them like vinyl and play in chord progressions. Choppa is a lightning-fast audio sampler and slicing tool built for songwriters, beatmakers, and live performers. Record through your mic and instantly map audio across playable trigger pads. Auto-chop on transient or pitch detection — switch between 4 / 8 / 16 pad layouts without losing any of their per-chop settings. PERFORMANCE GESTURES Tap to trigger. Hold to sustain. Drag a single finger up and down on a pad to slide pitch in real time — ±2 octaves without lifting. Drop a second finger anywhere on the screen and any held chop slows like a record being touched. Move the second finger and you scratch in either direction. Lift to release the platter — a force-based exponential inertia model (modeled on real turntable physics, not a linear fade) ramps back to nominal speed. Spread your fingers wider and the scratch responds more gently — a "grip pressure" metaphor borrowed from real decks. The chop view and minimap both work as scrub surfaces. The minimap ignores chop boundaries entirely — drag freely across the whole loop as one continuous tape. CHORD PLAY PERF mode has two flavours: SCRATCH for turntable gestures and CNFG for chord play. CNFG's MONO/POLY toggle controls whether each pad press chokes the previous (one voice at a time) or lets multiple voices stack while held — piano-key hold-to-play for chord progressions, sustained harmonies, and layered counter-melodies. CHOPPING Auto-chop detects transients or pitch boundaries automatically when you record or import a sample, with sensitivity knobs for each. Drag chop edges manually, set per-section pitch and gain, enable reverse, and pick between off / forward loop / ping-pong on any chop. Three pad-count layers (4 / 8 / 16) are fully independent — switch between them and all per-chop settings stay intact. INPUT SOURCES Pick what feeds Choppa: any mic capsule (front / back / bottom / USB / AirPods), the two royalty-free streams that ship with the app, or any HTTPS audio URL you paste in. Record from any of them. RECORD MODE A dedicated REC mode for capture work, with an ARM safety pin — destructive full re-record requires a deliberate ARM tap so a stray REC press can't write over a take. Punch-in records into a single chop's region only, with single-level undo — perfect for fixing a flubbed beat without losing the rest. WIRELESS TO YOUR DAW Ableton Link Audio — Choppa's master mix appears as a track-input source in Live, Loopy Pro, AUM, GarageBand iOS, and any Link 4 peer on the same Wi-Fi. Tempo syncs at the same time. No USB cable, no virtual audio device. PLUGIN INSIDE YOUR DAW Full AUv3 plugin support — load Choppa inside GarageBand, Logic Pro for iPad, AUM, Loopy Pro, or any Audio Unit host as either an Instrument (play chops via host MIDI) or an FX (capture the host's audio for chopping). MIDI mappings persist per host. LIBRARY + SHARE Every recording auto-saves into an App Group library shared between Choppa standalone and the AUv3 plugin — record a sample on your phone, load it in your DAW the next time you open it. Share to Choppa from any other app and pick which bank receives the sample, plus the chop count, before it lands. EXPORT Export source WAV, individual chops, .choppa single-bank presets, or full .choppap multi-bank projects. Import from other Choppa users or any audio file. Built by WaveLoop. Get off the grid.