Wayne Parham Messages: 18791 Registered: January 2001
Illuminati (33rd Degree)
Path length sets the position of standing wave nodes, but it is not a determiner of diffraction. Diffraction is set by aperture size and wavelength. The size of the opening and the wavelengths that pass through determine the amount of pattern spreading from diffraction.
If your main concern is comb filtering, you might consider that at 150Hz, wavelength is 7.5 feet. Sounds sources can be nearly 2 feet apart and still sum as a single sound source.
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