The Phase Page
Note: This section concerns the Phase. We included an advanced phase control in the HDSP-V GUI.
Phase control can be a magic bullet to solve some tuning issues. However, it can also do far more harm than good to
the sound stage, if used incorrectly or used to much. We highly recommend that only experienced tuners use the
phase variable phase tool.
Understanding Phase
Sound flows in waves. Pleasant sound flows in smooth waves. When a speaker makes a note it starts at
rest, it pushes OUT, then it comes back past rest to IN, then it returns to rest. This movement of pushing
and pulling air creates the sound wave. A smooth pleasant wave shape is the sine wave.
Here is the wave expressed in degrees.
When music is played, each and every note
is on its particular spot on its wave form.
If the recorded music does not maintain
each noted place the sound of the whole
is changed.
Two notes of the same frequency and size
that are in phase make twice the volume
of one, as in diagram A. However, those same
notes at 180° out of phase cancel each other
out and there is no sound, as in the red line
of diagram B. Diagram B is also what
happens when two speakers are wired with
different polarity.
The variable phase tool: The phase page is a tool that allows you modify the phase of each channel.
You can control the amount of phase shift in degrees, and you can determine the frequency where
that phase shift occurs.
A
B
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