Sound Field Plug-Ins : SignalTools : SignalTools PhaseScope

SignalTools PhaseScope
(TDM and RTAS)
PhaseScope is a multichannel metering plug-in that provides signal level and phase information for stereo tracks only. (Mono and LCR or greater multichannel tracks are not supported.) This is useful for troubleshooting phase problems and for visualizing the stereo width of a track when mixing.
 
SignalTools Lissajous Meter Display
The PhaseScope Lissajous Meter displays the relationship between the amplitude and phase of a stereo signal, enabling you to monitor stereo imaging graphically.
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A “Lissajous curve” (also known as a Lissajous figure or Bowditch curve) is a type of graph that is able to describe complex harmonic motion. To learn more, search the Web or your local library for information on its origins and its two principal developers, Jules Antoine Lissajous and Nathaniel Bowditch.
 
The Lissajous Meter display is divided into four quadrants, with left and right channels arranged diagonally. When audio is panned predominantly to a particular speaker channel, a diagonal line appears, indicating the channel.
The Lissajous Meter displays in-phase material as a vertical line and out-of-phase material as a horizontal line.