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DIY & Tutorials
DIY For Audio
It’s bliss to know nutting, you start impossible things….
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<blockquote data-quote="Sarel.wagner" data-source="post: 1107423" data-attributes="member: 25509"><p>My original understanding of how this DML thing works was not very good. It took some time to find enough good info to visualise the workings.</p><p></p><p>There seems to be agreement in general, that this picture represents how the panel vibrations look and work. This was a single low frequency. Since there are two modal nodes in blue and one of opposite magnitude in red, there will be some cancellation as they are out of phase, this leads to lower sound output. Below is exaggerated for effect. Panel moves a few millionths of a mm, up to about 20 or 30 millionths.</p><p>[ATTACH=full]11725[/ATTACH]</p><p></p><p>This animation is of a different panel and clearly illustrates the flexing and patterns of modes.</p><p>[ATTACH=full]11726[/ATTACH]</p><p></p><p>Now we can at least visualise what happens when the panel is excited.</p><p></p><p>Groetnis</p></blockquote><p></p>
[QUOTE="Sarel.wagner, post: 1107423, member: 25509"] My original understanding of how this DML thing works was not very good. It took some time to find enough good info to visualise the workings. There seems to be agreement in general, that this picture represents how the panel vibrations look and work. This was a single low frequency. Since there are two modal nodes in blue and one of opposite magnitude in red, there will be some cancellation as they are out of phase, this leads to lower sound output. Below is exaggerated for effect. Panel moves a few millionths of a mm, up to about 20 or 30 millionths. [ATTACH type="full"]11725[/ATTACH] This animation is of a different panel and clearly illustrates the flexing and patterns of modes. [ATTACH type="full"]11726[/ATTACH] Now we can at least visualise what happens when the panel is excited. Groetnis [/QUOTE]
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DIY & Tutorials
DIY For Audio
It’s bliss to know nutting, you start impossible things….
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