class RemiAudio::DSP::MS20Filter

Overview

Implements a lowpass filter that is similar to the one in a Korg MS-20.

Included Modules

Defined in:

remiaudio/dsp/ms20filter.cr

Constructors

Instance Method Summary

Instance methods inherited from module RemiAudio::DSP::LPFilter

active=(active : Bool) active=, active? : Bool active?, cutoff : Float64 cutoff, cutoff=(val : Float64) cutoff=, invSampleRate : Float64 invSampleRate, process(sample : Float32) : Float32
process(sample : Float64) : Float64 process, reset : Nil reset, resonance : Float64 resonance, resonance=(val : Float64) resonance=, sampleRate : Float64 sampleRate, sampleRate=(val : Int | Float) : Nil sampleRate=, set(newCutoff : Float64, newResonance : Float64) set, updateCoefficients : Nil updateCoefficients

Class methods inherited from module RemiAudio::DSP::LPFilter

midiToCutoff(val : UInt8) : Float64 midiToCutoff

Constructor Detail

def self.new(sampleRate) #

Creates a new BiQuadFilter.


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Instance Method Detail

def cutoff=(val : Float64) #

Sets the cutoff frequency of the filter. If this is less than the NyQuist limit, then the filter will be disabled.


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def process(block : Array(Float32)) : RemiAudio::DSP::MS20Filter #

"Runs" the filter over block.


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def process(block : Array(Float64)) : RemiAudio::DSP::MS20Filter #

"Runs" the filter over block.


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def process(block : Slice(Float32)) : RemiAudio::DSP::MS20Filter #

"Runs" the filter over block.


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def process(block : Slice(Float64)) : RemiAudio::DSP::MS20Filter #

"Runs" the filter over block.


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def process(sample : Float64) : Float64 #

Processes a single sample with the filter, returning a new sample.


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def reset : Nil #

Clears the internal buffers.


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def resonance=(val : Float64) #

Sets the resonance of the filter. This will be clamped to RESONANCE_MIN..RESONANCE_MAX.


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def set(newCutoff : Float64, newResonance : Float64) #

Sets both the cutoff frequency and resonance of the filter. If the cutoff is less than the NyQuist limit, then the filter will be disabled. The cutoff will be clamped to RESONANCE_MIN..RESONANCE_MAX.


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def updateCoefficients : Nil #

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