Is a full 360 degrees phase shift audible?
I am making an active crossover, and it requires an allpass delay. The tweeter must be delayed 190 us according to measurements, and I could use two stages of the filters shown here http://www.linkwitzlab.com/filters.htm#4. However, if a 360 degree phase shift is inaudible, then I could instead delay the midrange by 60 us to make the waveform a full 180 degrees behind (250 us = 1/2 wavelength at crossover), and then invert the polarity to total 360 degrees shift. Putting a shorter delay circuit in the midrange would result in much less phase distortion due to the allpass delay filter.
What do you all think.
Thanks,
Lee
I am making an active crossover, and it requires an allpass delay. The tweeter must be delayed 190 us according to measurements, and I could use two stages of the filters shown here http://www.linkwitzlab.com/filters.htm#4. However, if a 360 degree phase shift is inaudible, then I could instead delay the midrange by 60 us to make the waveform a full 180 degrees behind (250 us = 1/2 wavelength at crossover), and then invert the polarity to total 360 degrees shift. Putting a shorter delay circuit in the midrange would result in much less phase distortion due to the allpass delay filter.
What do you all think.
Thanks,
Lee
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