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Description
I-ō47 Multimode Resonator/Filter
is a modern take on a vintage
circuit design inspired by the classic synthesisers from the early 1970s.
Unlike many multimode filters,
I-ō47
has a steep -18dB/oct slope with
interpolating inputs and tameable resonance.
Although inspired by the past, this module was designed with new
ideas, new features, and most importantly - new quirks. A hybrid design
of matched transistor pairs and precision op-amps was used to create
the circuit’s semi-discrete VCAs, making the
I-ō47
a beast of its
own variety.
With on-board limiter/waveshaper, exponential frequency modulation,
pingable resonance, inverted input, and crossfading and mixing
capabilities,
I-ō47
fits in every patch.
Features
• Simultaneous low pass, high pass, band pass, and notch filter types
• Self-oscillating resonance with feedback toggle
• 1V/Oct tracking
• Strike input for pingable resonance
• Notch offset with CV control
• Limiter/waveshaper
• Inverting input
