Prosperity Synth.

Dual Granular Engines

Two independent granular engines per voice, each reading a loaded sample through its own grain processing chain. Per-engine controls cover Grain Shape, Size, and Tilt for envelope shaping; Motion parameters for Density and Speed; Pitch transposition; and Space settings for stereo placement and scatter. A live waveform display with independent ST/LEN loop markers defines the playback region for each engine. The Morph column between them blends the two spectral outputs in real time across four morph types, with independent balance and output volume. Engine divergence and morph position drive most of the instrument's timbral variation , from coherent sustained tones to fragmented, spectrally complex layers.

Each engine now runs in one of three granular modes, set per engine so the two halves of a voice can read the same sample in completely different ways:

• Time Engine , motion and texture. Time Engine is the classic scatter granulator: a coherent read head that can be slowed, frozen, reversed or stretched independently of pitch. It preserves the source's character while letting you time-stretch, glitch and re-pitch it, so it excels at evolving pads, risers and transitions, rhythmic stutters (with DENSITY and SPEED tempo-synced), and general sample mangling. With DENSITY low you hear individual grains for stuttery, rhythmic effects; with DENSITY high it blurs into a continuous, organic stream that keeps the timbral fingerprint of the loop.
• Tone Engine , pitch and instrument. Tone Engine locks playback to the played note via overlap-add resynthesis, turning any loaded sample into a fully tonal, polyphonically playable instrument. It tracks the keyboard cleanly and holds steady pitch regardless of the source's original tuning, making it ideal for melodic leads, plucks, organ- and string-like sustains, and basses, where you want the timbre of a sample but the tuning and stability of a synth. As an Engine B morph source it contributes a pitch-locked spectral fingerprint that morphs against Engine A. Reach for it whenever the patch needs to be played rather than triggered.
• Cloud Engine , atmosphere and diffusion. Cloud Engine trades coherence for density: a swarm of randomised grains that smears the source into a soft, three-dimensional texture. Because read position, pitch, amplitude, size and direction are diced per grain, it naturally produces granular-reverb washes, shimmering ambiences, frozen drones and evolving sound beds , the more SPRAY and DENSITY you add, the more the original sample dissolves into atmosphere. It is the mode for ambient and cinematic textures, pad design, transitions and tails, and anywhere you want a sample to become a place rather than a note. Pair it with the diffusion delay/reverb and slow LFOs on ST/LEN for endlessly drifting backdrops.

Dual Filters

A per-voice dual state-variable filter. Each filter selects between LP, HP, BP and Notch modes with 12 dB or 24 dB slope, with independently modulatable FREQ and RES. Serial mode stacks the filters in sequence; Parallel mode sums their outputs. At moderate settings they handle standard spectral shaping; at high resonance with modulated cutoff they contribute to the instrument's more aggressive and rhythmically unstable output.