Podolski
Created in 2005 and still going strong. Podolski is a free, straightforward, CPU-efficient virtual analog synthesizer. One oscillator, one filter, one envelope, and an arpeggiator/sequencer. Simple, but with a few tricks up its sleeve. Create high-quality sounds with ease. Podolski is a simple, CPU-efficient virtual analog synthesizer. Basically a cut-down version of FilterscapeVA with just one oscillator, one filter, one envelope, and two LFOs, it also features a Zebra-style arpeggiator/sequencer plus chorus and delay effects. Podolski's specialties are the click parameter (which emphasizes the filter attack) and its ability to seamlessly morph between three waveforms (WaveWarp). Oscillator with variable symmetry (sawtooth to triangle, PWM) and glide. Combination arpeggiator/16-step sequencer with extra modulation source. ADSR or HDSR, linear or exponential. Sustain has fall/rise control.
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AudioKit Synth One
AudioKit Synth One is the world's first completely free and open source professional iOS synthesizer app, developed by volunteers to provide a full-featured and ad-free music creation experience. It features a hybrid analog/FM poly synth with six-voice capability, over 300 presets crafted by renowned sound designers, and supports accessibility with VoiceOver for the blind and visually impaired. The app integrates seamlessly with Audiobus 3, and Inter-app Audio (IAA), and is compatible with AUM, BeatMaker 3, Cubasis, and GarageBand. Its sound engine includes five oscillators, two assignable LFOs with numerous routing options, and a vintage-style 16-step sequencer. Additional features comprise a classic poly arpeggiator, Ableton Link support, touchable ADSR envelopes for amp and filter, a 4-pole vintage low-pass filter, high-pass/band-pass filters, and effects such as reverb and multi-tap delay. MIDI integration allows control via MIDI keyboards or DAWs.
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BazilleCM
BazilleCM is a streamlined version of u-he's modular synthesizer, Bazille, offering a compact yet powerful synthesis environment. It features two digital oscillators capable of simultaneous frequency modulation, phase distortion, and fractal resonance, providing a rich palette for sound design. The synthesizer includes a multimode analog-style filter with six parallel outputs, two ADSR envelopes with adjustable sustain slopes, and a low-frequency oscillator with multiple waveforms. A 16-step sequencer with eight morphable snapshots allows for intricate pattern creation. Additional components such as multiplex units for mixing and modulation, a built-in stereo delay, and various audio-rate signal processors enhance its versatility. BazilleCM supports a polyphony of up to eight voices and offers a resizable, skinnable user interface. It comes with over 265 factory presets to inspire creativity.
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Diva
Diva captures the spirit of five decades of analog synthesizers. Oscillators, filters, and envelopes from some of the greatest monophonic and polyphonic synths of yesteryear were meticulously modeled for unmatched analog sound. More than a single synthesizer: Recreate an old favourite or mix-and-match modules to design your unique hybrid. Authentic, award-winning analog sound. Per-voice oscillator detunes and user-definable modulation source. Zero delay feedback (ZDF) filter design for authentic resonance behavior. 3 ADS(S)R envelope models based on classic synth hardware with keyboard follow and velocity scaling. Host-sync-able arpeggiator with continuous rate offset, swing, and various progression options. 2 host-sync-able LFOs with multiple waveforms, restart options, and phase controls. 2 stereo effects slots, each with chorus (3 modes), phaser (2 modes), plate reverb, delay, rotary speaker.
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