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Phase & Acoustic Polarity
AvailableCompare in-phase and inverted signals to listen for changes in stereo image focus and low-frequency depth.
Safe listening:Phase comparison reveals how coherent acoustic signals combine between left and right channels.
LEFTL
0.0 dBLeft ear
STEREO
RIGHTR
0.0 dBRight ear
Select a phase mode below to begin
What to listen for
- •In-Phase Perception: Sound should feel focused centered inside your head with full, solid bass.
- •Out-of-Phase Perception: Center image collapses, sounding diffuse, hollow, and wide with reduced bass.
- •Observational Check: If standard playback sounds hollow while inverted playback sounds centered, check your audio cable connection or device balance.
Technical context
Opposing signal polarity creates psychoacoustic phase cancellation when left and right sound waves mix. In headphones, out-of-phase audio creates an unnatural "outside the head" sensation.