AVAudioUnitEQFilterParametersMBS.FilterTypeBandPass = 5

Type	Topic	Plugin	Version
const	AVFoundationNode	MBS AVFoundation Plugin	15.3

One of the filter types available to use with the filterType property.

Band pass filter. The required parameters are: frequency (center) and bandwidth.

AVAudioUnitEQFilterParametersMBS.FilterTypeBandStop = 6

Type	Topic	Plugin	Version
const	AVFoundationNode	MBS AVFoundation Plugin	15.3

One of the filter types available to use with the filterType property.

Band stop filter (“notch filter”). The required parameters are: frequency (center) and bandwidth.

AVAudioUnitEQFilterParametersMBS.FilterTypeHighPass = 2

Type	Topic	Plugin	Version
const	AVFoundationNode	MBS AVFoundation Plugin	15.3

One of the filter types available to use with the filterType property.

Simple Butterworth 2nd order high pass filter. The required parameters are: frequency (-3 dB cutoff at specified frequency).

AVAudioUnitEQFilterParametersMBS.FilterTypeHighShelf = 8

Type	Topic	Plugin	Version
const	AVFoundationNode	MBS AVFoundation Plugin	15.3

One of the filter types available to use with the filterType property.

High shelf filter. The required parameters are: frequency (center) and gain.

AVAudioUnitEQFilterParametersMBS.FilterTypeLowPass = 1

Type	Topic	Plugin	Version
const	AVFoundationNode	MBS AVFoundation Plugin	15.3

One of the filter types available to use with the filterType property.

Simple Butterworth 2nd order low pass filter. The required parameters are: frequency (-3 dB cutoff at specified frequency).

AVAudioUnitEQFilterParametersMBS.FilterTypeLowShelf = 7

Type	Topic	Plugin	Version
const	AVFoundationNode	MBS AVFoundation Plugin	15.3

One of the filter types available to use with the filterType property.

Low shelf filter. The required parameters are: frequency (center) and gain.

AVAudioUnitEQFilterParametersMBS.FilterTypeParametric = 0

Type	Topic	Plugin	Version
const	AVFoundationNode	MBS AVFoundation Plugin	15.3

One of the filter types available to use with the filterType property.

Parametric filter based on Butterworth analog prototype. The required parameters are: frequency (center), bandwidth, and gain.

AVAudioUnitEQFilterParametersMBS.FilterTypeResonantHighPass = 4

Type	Topic	Plugin	Version
const	AVFoundationNode	MBS AVFoundation Plugin	15.3

One of the filter types available to use with the filterType property.

High pass filter with resonance support (using the bandwidth parameter). The required parameters are: frequency (-3 dB cutoff at specified frequency) and bandwidth.

AVAudioUnitEQFilterParametersMBS.FilterTypeResonantHighShelf = 10

Type	Topic	Plugin	Version
const	AVFoundationNode	MBS AVFoundation Plugin	15.3

One of the filter types available to use with the filterType property.

High shelf filter with resonance support (using the bandwidth parameter). The required parameters are: frequency (center), bandwidth, and gain.

AVAudioUnitEQFilterParametersMBS.FilterTypeResonantLowPass = 3

Type	Topic	Plugin	Version
const	AVFoundationNode	MBS AVFoundation Plugin	15.3

One of the filter types available to use with the filterType property.

Low pass filter with resonance support (using the bandwidth parameter). The required parameters are: frequency (-3 dB cutoff at specified frequency) and bandwidth.

AVAudioUnitEQFilterParametersMBS.FilterTypeResonantLowShelf = 9

Type	Topic	Plugin	Version
const	AVFoundationNode	MBS AVFoundation Plugin	15.3

One of the filter types available to use with the filterType property.

Low shelf filter with resonance support (using the bandwidth parameter). The required parameters are: frequency (center), bandwidth, and gain.