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Speaker Asylum General speaker questions for audio and home theater. |
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Speaker Asylum General speaker questions for audio and home theater. |
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In Reply to: RE: Why don't we see more these directivity plots? posted by hahax@verizon.net on September 5, 2024 at 19:55:45:
It's not just directivity but often it is the phase difference between the sources that is the cause, not only discontinuities in directivity..
The phase determines if two mutually coupled sources (less than 1/4 wl apart edge to edge) add completely or cancel completely or somewhere in between. It determines the direction of the lobes and nulls when the driver spacing is greater than 1/2 wavelength and then radiating independently and producing an interference pattern.
Remember too that any low pass filter is a time delay and the LF output from a non-FIR crossover is delayed relative to the upper and is why most loudspeakers do not preserve "time" yet most music is transients.
The greater the slope, the more delay there is (for named slopes, 90 degrees phase delay per order, 2 order and above)
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Follow Ups
- RE: Why don't we see more these directivity plots? - tomservo 05:52:36 09/06/24 (1)
- RE: Why don't we see more these directivity plots? - hahax@verizon.net 20:53:32 09/06/24 (0)
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