LambdaSound.Filter

This module implements IIR filters.

See: http://shepazu.github.io/Audio-EQ-Cookbook/audio-eq-cookbook.html

Usage

data IIRParams

IIRParams contains the filter coefficients for the forward and feedback computation

Constructors

IIRParams

Fields

• feedforward :: !(Vector S Float)
• feedback :: !(Vector S Float)

Instances

Show IIRParams

Defined in LambdaSound.Filter

Methods

showsPrec :: Int -> IIRParams -> ShowS

show :: IIRParams -> String

showList :: [IIRParams] -> ShowS

applyIIRFilter :: (SamplingInfo -> IIRParams) -> Sound d Pulse -> Sound d Pulse

Applies the IIR filter defined by the IIRParams to the sound.

Design

lowPassFilter :: Hz -> Float -> SamplingInfo -> IIRParams

A low-pass filter using cutoff frequency and resonance.

highPassFilter :: Hz -> Float -> SamplingInfo -> IIRParams

A high-pass filter using cutoff frequency and resonance.

bandPassFilter :: Hz -> Float -> SamplingInfo -> IIRParams

A band pass filter using cutoff frequency and resonance.