For the moment, let's set aside the argument over whether or not phase is audible, and just look at a measurement case.
REW has a setting named "Impulse Response Window" with the default settings shown here:
Here are in-room measurements of my speakers, changing the "right window" time:
Red - 500ms
Blue - 21ms
Violet - 20ms
Green - 6ms
The base measurement capture is the same file, changing only the "right window" time for display.
My reasoning in the reduction of the "right window" time is to reduce the influence of the room.
From 500 ms down to 21 ms the trace follows the same path (red and blue)
At 20 ms it changes drastically (violet)
At 6 ms it is nearly flattened throughout the range (green)
The room-length bounce on an Impulse Response occurs at about 25 ms. So, I suppose I am suppressing that with the 20 ms window. The bounce off the wall behind the speakers would be suppressed at the 6 ms measurement.
Am I looking at this correctly, or just fuzzing things up so it appears to give a pretty flat direct phase response?
REW has a setting named "Impulse Response Window" with the default settings shown here:
Here are in-room measurements of my speakers, changing the "right window" time:
Red - 500ms
Blue - 21ms
Violet - 20ms
Green - 6ms
The base measurement capture is the same file, changing only the "right window" time for display.
My reasoning in the reduction of the "right window" time is to reduce the influence of the room.
From 500 ms down to 21 ms the trace follows the same path (red and blue)
At 20 ms it changes drastically (violet)
At 6 ms it is nearly flattened throughout the range (green)
The room-length bounce on an Impulse Response occurs at about 25 ms. So, I suppose I am suppressing that with the 20 ms window. The bounce off the wall behind the speakers would be suppressed at the 6 ms measurement.
Am I looking at this correctly, or just fuzzing things up so it appears to give a pretty flat direct phase response?