AKBandPassButterworthFilter

open class AKBandPassButterworthFilter : AKNode, AKToggleable, AKComponent, AKInput

These filters are Butterworth second-order IIR filters. They offer an almost flat passband and very good precision and stopband attenuation.

  • Lower and upper bounds for Center Frequency

    Declaration

    Swift

    public static let centerFrequencyRange: ClosedRange<Double>
  • Lower and upper bounds for Bandwidth

    Declaration

    Swift

    public static let bandwidthRange: ClosedRange<Double>
  • Initial value for Center Frequency

    Declaration

    Swift

    public static let defaultCenterFrequency: Double
  • Initial value for Bandwidth

    Declaration

    Swift

    public static let defaultBandwidth: Double
  • Ramp Duration represents the speed at which parameters are allowed to change

    Declaration

    Swift

    @objc
    open dynamic var rampDuration: Double { get set }
  • Center frequency. (in Hertz)

    Declaration

    Swift

    @objc
    open dynamic var centerFrequency: Double { get set }
  • Bandwidth. (in Hertz)

    Declaration

    Swift

    @objc
    open dynamic var bandwidth: Double { get set }
  • Tells whether the node is processing (ie. started, playing, or active)

    Declaration

    Swift

    @objc
    open dynamic var isStarted: Bool { get }
  • Function to start, play, or activate the node, all do the same thing

    Declaration

    Swift

    @objc
    open func start()
  • Function to stop or bypass the node, both are equivalent

    Declaration

    Swift

    @objc
    open func stop()