As a general rule, software and people in general speak of the accurate farfield measurement distance being a function of the distance between the measurement microphone and source and the nearest reflectie surface. Others indicate that though this provides a reflection free window, true farfield cannot me measured unless the measurement microphone is at least 2 wavelengths away from the sound source of the lowest frequency of interest. This would put a damper in the accuracy of full range (that is, for the low frequency) ground plane measurements. I was curious to hear the thoughts of any informed engineers.
I did some tests and seem to get some consistent results ignoring the wavelength limited distance requirements, but still, my scientific curiosity got the best of me.
Thanks, Jay
I did some tests and seem to get some consistent results ignoring the wavelength limited distance requirements, but still, my scientific curiosity got the best of me.
Thanks, Jay
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