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Thread Tools | Search this Thread |
20th April 2008, 08:43 AM
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#1 |
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diyAudio Member
Join Date: Mar 2008
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Driver Velocity
Hi guys,
If i have the driver velocity Ud. how can i work out the pressure level from that? I'm guessing its gotta be something like Ud * Sd * p * c where Ud = Driver Velocity Sd = Cone Area p = Density of air c = Speed of sound I'm not quite sure though, does anyone have any ideas? Thanks Pete P.s. I'm calculating Ud (in an infinite baffle) using: Ud = Pg / ((1 / jwCas) + jwMas + Rat) Where: Pg = Acoustic Driving Pressure = (eg Bl) / (ReSd) Cas = Acoustic Compliance = Vas / (pc^2) Mas = Acoustic Mass (not too sure how to calculate this?) Maybe (1 / (fs^2 * Cas)) Rad = (Bl^2 / Sd^2) * (Qes / (Re * Qms)) Rat = Total Acoustic Resistance = Rad + (Bl^2 / (Sd^2 (Re + jwLvc))) |
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20th April 2008, 03:14 PM
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#2 |
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diyAudio Member
Join Date: Mar 2005
Location: Jacobsmountain
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Hi Pete,
Maybe this paper can give you a hint: http://courses.ece.uiuc.edu/ece403/l...c11.070209.pdf b |
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