Crosstalk Cancellation (XTC)

Crosstalk cancellation for speaker playback. Creates a wider stereo image by cancelling inter-speaker interference.

Parameters

Geometry

Parameter	Type	Range	Default	Unit	Description
Distance	Float	0.5 .. 10	2	m	Listener-to-speaker distance
Speaker Angle	Float	10 .. 90	30	°	Half-angle between speakers
Head Radius	Float	0.05 .. 0.12	0.0875	m	Acoustic head radius
Head Model	Choice (Woodworth, Brown-Duda)	2 options	Woodworth	-	Head diffraction model: Woodworth (classic) or Brown-Duda (rigid sphere, more accurate above 1.5kHz)

Head Tracking

Parameter	Type	Range	Default	Unit	Description
Head Offset X	Float	-0.5 .. 0.5	0	m	Lateral head position offset
Head Offset Z	Float	-0.5 .. 0.5	0	m	Forward/back head position
Head Yaw	Float	-90 .. 90	0	°	Head rotation angle
Head Tracking Smooth	Float	0 .. 1	0.1	s	Tracking data smoothing time

Beta

Parameter	Type	Range	Default	Unit	Description
Beta Base	Float	0.0001 .. 0.1	0.001	-	Regularization base level
Beta Low Boost	Float	0 .. 30	10	-	Extra regularization at low freq
Beta High Boost	Float	0 .. 30	10	-	Extra regularization at high freq

Shadow

Parameter	Type	Range	Default	Unit	Description
Shadow Cutoff	Float	1000 .. 10000	4000	Hz	Head shadow filter onset freq
Shadow Slope	Float	0 .. 12	6	dB/oct	Head shadow attenuation rate

Filter

Parameter	Type	Range	Default	Unit	Description
Max Gain	Float	3 .. 30	12	dB	Maximum XTC filter boost

Advanced

Parameter	Type	Range	Default	Unit	Description
Spectral Norm	Bool	On / Off	On	-	Normalize filter energy
Pinna Model	Bool	On / Off	Off	-	Include pinna diffraction model

Room

Parameter	Type	Range	Default	Unit	Description
Room Reflections	Bool	On / Off	Off	-	Include first-order reflections
Room Width	Float	2 .. 10	4	m	Listening room width
Room Depth	Float	2 .. 15	5	m	Listening room depth
Wall Absorption	Float	0 .. 1	0.3	-	Wall absorption coefficient
Reflection Beta	Float	1 .. 10	3	-	Reflection path regularization

Diagnostic

Parameter	Type	Range	Default	Unit	Description
Bypass XTC Filters	Bool	On / Off	Off	-	Skip crosstalk cancellation
Bypass Spectral Norm	Bool	On / Off	Off	-	Skip spectral normalization
Bypass Neumann	Bool	On / Off	Off	-	Skip Neumann KH refinement

Auto Gain

Parameter	Type	Range	Default	Unit	Description
Auto Gain	Bool	On / Off	On	-	Auto-normalize output level
AG Max	Float	0 .. 24	12	dB	Maximum auto gain correction
AG Smoothing	Float	10 .. 500	100	ms	Auto gain transition time