rrarrow vs Multimode Ladder Filter

rrarrow is the experimental noise machine / modular audio effect for the iOS featuring extended feedback capabilities. Key features: - Simplicity. The interface is simplified for faster assembly and more flexible connectivity — you can assemble your effect very fast and control all the processing parameters with the audio signal! - Feedback capabilities. You can add feedbacks to the audio chain to get some chaotic noise sounds . - 20 blocks for audio processing: - Sine generator. Basic oscillator with sine waveform - Saw and square oscillators - Signal multiplier - Delay - Frequency shifter - Envelope follower - “Lorenz attractor” - Quantizer - Sample-and-hold - Reverb - Special Lowpass filter - Clipper - Nonlinear shaper (for self-oscillating circuit) - two special waveshaping modules with “fold” and “wrap” distortion blocks that work with audiofiles: - lookup table. Loads up to 10 seconds of audiofile to be used as nonlinear transfer function - Players with/without interpolation and speed control - "scrub" block for semi-random granular file playback - Built-in audio recorder. Share the audio file to other applications or AudioShare. - MIDI support! Assign MIDI controllers to all faders. Supports network midi and has a virtual MIDI in. - Audiobus support. Now you can stream live audio directly to other Audiobus-compatible apps! See http://audiob.us for more information. Works as input and filter. - Audiobus state saving support - Inter-App Audio support - Background audio support: enabled when connected to Audiobus and user switchable otherwise. The 'background audio" switch is located in app's "settings" page iPad2/iPhone4S or newer is recommended for complex presets this app is optimized for iPad and iPhone 5 To get started please watch the tutorial videos on the website and read the user guide inside the app

A 4-pole (24 dB/oct) ladder filter modeled after the topology designed by Robert Moog in 1965. Four cascaded one-pole stages with tanh saturation at input and feedback produce warm analog-style distortion that scales with drive and resonance. Five filter modes (lowpass, highpass, bandpass, notch, and resonant) cover everything from classic subtractive sweeps to sharp self-oscillating leads. Resonance drives the filter to self-oscillation at high values, generating a sine tone at the cutoff frequency. A dry/wet control enables parallel filtering.