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Junior Varsity
[Poll] Which array types matter for your business?
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<blockquote data-quote="Phil Graham" data-source="post: 129546" data-attributes="member: 430"><p>Re: [Poll] Which array types matter for your business?</p><p></p><p></p><p></p><p>Glenn,</p><p></p><p>At the risk of pedantry, due to a mathematical simplification called the "far field approximation" <em>all</em> loudspeaker arrays are treated as essentially weighted point sources when analyzing their response at the audience locations computationally. This approximation has been well understood in optics and acoustics for more than 100 years. Meyer Sound published a couple of AES papers validating the far field approximation against physical measurements from their anechoic chamber.</p><p></p><p>In practice all arrays, vertical, horizontal, and otherwise differ by three main parameters:</p><ol> <li data-xf-list-type="ol">What is the lowest frequency where intra-box elements have a high degree of directivity?</li> <li data-xf-list-type="ol">What is the size of the radiating area of the array for a given frequency?</li> <li data-xf-list-type="ol">What is the distribution of output, volume, and relative arrival times across the radiating area for a given frequency?</li> </ol><p></p><p>There's no point in distinguishing for a "point source" as that presumes a differentiator that does not exist in the physical treatment of real systems. If you want to work with a box such as EV x-array or Nexo Alpha, then pick the option for boxes that can be used in both planes.</p></blockquote><p></p>
[QUOTE="Phil Graham, post: 129546, member: 430"] Re: [Poll] Which array types matter for your business? Glenn, At the risk of pedantry, due to a mathematical simplification called the "far field approximation" [I]all[/I] loudspeaker arrays are treated as essentially weighted point sources when analyzing their response at the audience locations computationally. This approximation has been well understood in optics and acoustics for more than 100 years. Meyer Sound published a couple of AES papers validating the far field approximation against physical measurements from their anechoic chamber. In practice all arrays, vertical, horizontal, and otherwise differ by three main parameters: [LIST=1] [*]What is the lowest frequency where intra-box elements have a high degree of directivity? [*]What is the size of the radiating area of the array for a given frequency? [*]What is the distribution of output, volume, and relative arrival times across the radiating area for a given frequency? [/LIST] There's no point in distinguishing for a "point source" as that presumes a differentiator that does not exist in the physical treatment of real systems. If you want to work with a box such as EV x-array or Nexo Alpha, then pick the option for boxes that can be used in both planes. [/QUOTE]
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[Poll] Which array types matter for your business?
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