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<blockquote data-quote="John Roberts" data-source="post: 147835" data-attributes="member: 126"><p>Re: FIR filters</p><p></p><p></p><p><a href="http://circularscience.com/about-drums" target="_blank">http://circularscience.com/about-drums</a> perhaps TMI about drumhead vibration modes. </p><p><img src="http://circularscience.com/wp-content/uploads/2015/09/circle21.gif" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>Normal operation of a speaker driver is piston mode where the entire cone moves as one. The difference between piston mode and breakup is pretty significant with lots of extra higher frequency resonances. It is the nature of the physics for round diaphragms that the resonances are not integer harmonics but non-harmonic overtones. </p><p></p><p>You know more than me about speaks... but that doesn't stop my blather...</p><p></p><p>JR</p></blockquote><p></p>
[QUOTE="John Roberts, post: 147835, member: 126"] Re: FIR filters [url]http://circularscience.com/about-drums[/url] perhaps TMI about drumhead vibration modes. [img]http://circularscience.com/wp-content/uploads/2015/09/circle21.gif[/img] Normal operation of a speaker driver is piston mode where the entire cone moves as one. The difference between piston mode and breakup is pretty significant with lots of extra higher frequency resonances. It is the nature of the physics for round diaphragms that the resonances are not integer harmonics but non-harmonic overtones. You know more than me about speaks... but that doesn't stop my blather... JR [/QUOTE]
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