BASS_BFX_APF Class

[SerializableAttribute]
[StructLayoutAttribute(LayoutKind.Sequential, CharSet = CharSet.Ansi)]
public sealed class BASS_BFX_APF

<SerializableAttribute>
<StructLayoutAttribute(LayoutKind.Sequential, CharSet := CharSet.Ansi)>
Public NotInheritable Class BASS_BFX_APF

The BASS_BFX_APF type exposes the following members.

	Name	Description
	BASS_BFX_APF	Default constructor
	BASS_BFX_APF(Single, Single)	Constructor already setting the members
	BASS_BFX_APF(Single, Single, BASSFXChan)	Constructor already setting the members

	Name	Description
	Preset_Default	Sets the instance members to a preset.
	Preset_LongReverberation	Sets the instance members to a preset.
	Preset_RobotVoice	Sets the instance members to a preset.
	Preset_SmallRever	Sets the instance members to a preset.

	Name	Description
	fDelay	Delay in seconds (0...6). Default = 0.
	fGain	Gain of the all pass filter (-1...+1). Default = 0.
	lChannel	A BASSFXChan flag to define on which channels to apply the effect. Default: -1 (BASS_BFX_CHANALL) - all channels.

The allpass filter has the unique property that it passes all frequencies equally. This property makes it useful in reverberator design because it increases echo density while reducing signal coloration (an allpass filter is NOT transparent to transient signals, as it does have a phase response). The structure of an allpass filter is similar to the comb filter, but it contains an additional feedforward path. In reverb applications, the delay used in an allpass filter is generally measured in milliseconds. This keeps the 'reflections' spaced apart in a similar fashion to a room's impulse response.

The fDelay sets delay for all pass filter. The fGain controls the gain of all pass filter.

Reference