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Old 28th December 2012, 06:15 AM   #11
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Hi Dusty,

Quote:
I was surprised that the very lowest end response was just as good, ever so slightly better, than the exponential.
Look carefully at the profiles in my earlier post - notice how starting from the throat, the "circular" horn profile (blue trace) increases at a slightly slower rate than the exponential horn profile (red trace) for about the first 28 cm of the horn. This is the reason for the marginally better predicted low frequency response.

Quote:
So throat, mouth and axial dimension would determine the radius of the circle.
Not in the more general case - given only S1, S2 and L12, it then becomes necessary to also specify a radius. As mentioned previously, the radius effectively determines the amount of curvature in the flare.

Quote:
So far, it seems like you would be able to model the "circular" horns fairly accurately in hornresp using the exponential setting. I wonder however if the responses would differ in comparison at much higher or lower frequencies? Wink, wink.
I'm not promising anything, but I will look at the possibility of adding the "circular" horn profile to Hornresp. I will let you know if the profile is ultimately included.

Quote:
I am looking for Beranek's book online, does it talk extensively about horns?
There is one chapter devoted specifically to horn loudspeakers, but much of the information in other chapters is also directly applicable to horns. Beranek's book complements Olson's text very nicely.

Kind regards,

David
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Old 20th January 2013, 07:15 AM   #12
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Hi Dusty,

Quote:
I will let you know if the profile is ultimately included.
Hornresp can now model radius (circular arc) horns. See Hornresp for further details.

Kind regards,

David
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Old 21st January 2013, 04:07 AM   #13
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Thank you David! I know I and hopefully many others will put it to good use.

Dusty
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Old 21st January 2013, 06:35 AM   #14
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Quote:
Originally Posted by dustman96 View Post
Thank you David! I know I and hopefully many others will put it to good use.
Hi Dusty,

You're welcome. Thanks for prompting me to add the radius horn option to Hornresp :-).

Kind regards,

David
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