Spectrum Synthesizer Bundle by Thomas Burns received its latest update on August 2, 2021. Originally released on July 4, 2019.
Spectrum Synthesizer Bundle includes Spectrum (multi-mode polyphonic oscillator), Modal (modal resonator), Resonator (string generation algorithms), and Granular (granular sampler/looper/effect). It brings open-source DSP code from Mutable Instruments to mobile, allowing users to create complex patches with modulation and effects in iPad music production. The app supports MPE in Spectrum for expressive play, and Resonator/Modal can load as effects for processing external audio.
The bundle’s modular approach encourages experimentation, with each unit featuring LFOs, ADSR envelopes, and XY touchpads (except Modal). For how to make music on iPad, it’s a powerful free tool for sound designers, integrating as AUv3 in hosts like AUM or GarageBand. The MIT-licensed DSP code adds transparency for tinkerers.
Spectrum Synthesizer Bundle is an excellent free resource for Eurorack-inspired synthesis, enhancing creativity in the best iOS music apps with its versatile components.
- Spectrum: Multi-mode 8-voice polyphonic oscillator with 14 algorithms, MPE support
- Modal: Modal synthesis with bowed, blowed, struck sounds via 64-band resonator (instrument/effect)
- Resonator: 7 string generation algorithms (instrument/effect)
- Granular: Granular sampler, looper, pitch shifter, reverb (effect only)
- Modulation LFO with tempo sync, key reset, phase adjustment
- Modulation ADSR envelope
- XY touchpad for control (except Modal)
- 2-source modulation matrix
- MIDI CC parameter control




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