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<blockquote data-quote="Peter Morris" data-source="post: 147828" data-attributes="member: 652"><p>Re: FIR filters</p><p></p><p></p><p></p><p>Ah ... drum head behaviour, it's a worry but I still remember this from Uni mathematics :-/ </p><p>.... It can be described by the solution of a second order partial differential equation with the appropriate boundary conditions - wave equation. There are some cool animations on the web.</p><p></p><p>To me the easiest way to see where cone or diaphragm break is occuring is where the smooth-ish frequency response becomes at bit ragged. For a cone driver the directivity also narrows as the center of the speaker decouples (sort of) from the outer parts of the cone. With a compression driver the wave front shape is usually compromised.</p><p></p><p>There are lots of things that contribe to distortion - the linear behaviour of the motor, the suspension, cone breakup, resonances etc.</p><p></p><p>Im not a speaker designer either .... So if anyone can correct me or add some information please do so.</p></blockquote><p></p>
[QUOTE="Peter Morris, post: 147828, member: 652"] Re: FIR filters Ah ... drum head behaviour, it's a worry but I still remember this from Uni mathematics :-/ .... It can be described by the solution of a second order partial differential equation with the appropriate boundary conditions - wave equation. There are some cool animations on the web. To me the easiest way to see where cone or diaphragm break is occuring is where the smooth-ish frequency response becomes at bit ragged. For a cone driver the directivity also narrows as the center of the speaker decouples (sort of) from the outer parts of the cone. With a compression driver the wave front shape is usually compromised. There are lots of things that contribe to distortion - the linear behaviour of the motor, the suspension, cone breakup, resonances etc. Im not a speaker designer either .... So if anyone can correct me or add some information please do so. [/QUOTE]
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