- May 14, 2008
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Hi,
I was wondering if anyone can help me out to clarify this article on the Proximity Effect. Im trying to understand it fully but there are some things Im not sure I understood correctly.
Here is the link: http://en.wikipedia.org/wiki/Proximity_effect_(audio)
Basically, what I think its saying is that the frequency response change with an increase in low frequencies is due to the larger phase differences at high frequencies due to the reflections to the rear of the diaphragm since higher frequencies include more crests and troughs in a path length resulting in more phase difference.
However, I dont understand why such an emphasis on the amplitude pressure differences was made. It said that there are differences between the front and the back of the diaphragm which is pretty logical, explained further with the inverse square law. However, at close distances it said that these pressure differences were negligible if I understood correctly, so am I right in my understanding that at close distances, although the pressure is increasing with minimal pressure difference, the higher frequencies suffer from phase effects resulting in the lower ones to be more dominant?
I have a strong feeling that I am wrong. Can anyone please help me out as Ive been trying to make sense of it but with a strong sensation that I am way off the mark in my understanding.
Thanks in advance!
I was wondering if anyone can help me out to clarify this article on the Proximity Effect. Im trying to understand it fully but there are some things Im not sure I understood correctly.
Here is the link: http://en.wikipedia.org/wiki/Proximity_effect_(audio)
Basically, what I think its saying is that the frequency response change with an increase in low frequencies is due to the larger phase differences at high frequencies due to the reflections to the rear of the diaphragm since higher frequencies include more crests and troughs in a path length resulting in more phase difference.
However, I dont understand why such an emphasis on the amplitude pressure differences was made. It said that there are differences between the front and the back of the diaphragm which is pretty logical, explained further with the inverse square law. However, at close distances it said that these pressure differences were negligible if I understood correctly, so am I right in my understanding that at close distances, although the pressure is increasing with minimal pressure difference, the higher frequencies suffer from phase effects resulting in the lower ones to be more dominant?
I have a strong feeling that I am wrong. Can anyone please help me out as Ive been trying to make sense of it but with a strong sensation that I am way off the mark in my understanding.
Thanks in advance!
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