{"id":171,"date":"2017-08-08T10:08:57","date_gmt":"2017-08-08T10:08:57","guid":{"rendered":"http:\/\/pafec.kevinit.co.uk\/?page_id=171"},"modified":"2017-08-24T09:46:19","modified_gmt":"2017-08-24T09:46:19","slug":"pafls-pafec-loudspeaker-analysis-tool","status":"publish","type":"page","link":"https:\/\/pafec.kevinit.co.uk\/index.php\/pafls-pafec-loudspeaker-analysis-tool\/","title":{"rendered":"PafLS &#8211; PAFEC Loudspeaker analysis tool"},"content":{"rendered":"<p>PACSYS has released the PafLS loudspeaker analysis tool, which provides:<\/p>\n<ul>\n<li>Generic axisymmetric loudspeaker template designs for vibroacoustic analysis\u00a0<a href=\".\/index.php\/pafls-pafec-loudspeaker-analysis-tool\/pafls-multi-roll-surround-example\/\">(multi-roll surround example)<\/a><\/li>\n<li>A number of generic surround and spider template designs for large displacement analysis\u00a0<a href=\".\/index.php\/pafls-pafec-loudspeaker-analysis-tool\/pafls-pafec-loudspeaker-analysis-tool-2\/\">(corrugated surround example)<\/a><\/li>\n<li>Axisymmetric and 2D wave guide template, splined, exponential and conical profiles\u00a0<a href=\".\/index.php\/pafls-pafec-loudspeaker-analysis-tool\/pafls-wave-guide-example\/\">(wave guide example)<\/a><\/li>\n<li>Easy input of geometric and material parameters<\/li>\n<li>Quick analysis of design configurations<\/li>\n<li>3D visualisation of model<\/li>\n<\/ul>\n<p>On entry to PafLS the user chooses from a number of template designs. One common audio transducer design has the dust cap attached to the cone. The template based on this configuration is illustrated below:<\/p>\n<p><img loading=\"lazy\" class=\"aligncenter size-full wp-image-249\" src=\"\/wp-content\/uploads\/2017\/08\/pafls-01-594x480.gif\" alt=\"\" width=\"594\" height=\"480\" \/><\/p>\n<p><img loading=\"lazy\" class=\"aligncenter size-full wp-image-251\" src=\"\/wp-content\/uploads\/2017\/08\/pafls-03-576x422.gif\" alt=\"\" width=\"576\" height=\"422\" \/><\/p>\n<p style=\"text-align: center;\">Structural view: 3D representation of the 2D generator plane swept through 270<sup>o<\/sup>\u00a0(default),<br \/>\nfor the display of the deformed shapes and animations,\u00a0<a href=\".\/index.php\/pafls-pafec-loudspeaker-analysis-tool\/pafls-pafec-loudspeaker-analysis-tool-sample-animations\/\">(sample animations)<\/a>.<\/p>\n<p>The right hand pane displays a diagram of the generic design detailing the position of the input parameters. The diagram may be moved and enlarged by simply using the mouse.<\/p>\n<p>The left hand pane has three tabs:<\/p>\n<ul>\n<li>Input &#8211; parameter specification.<\/li>\n<li>Analysis &#8211; for setting frequency range and step; and voltage driver parameters.<\/li>\n<li>Display &#8211; for configuration of display of results: frequency selection, deformed shape, pressure fields, animations, etc. Note: more general post-processing of results can be undertaken in Qt-PafVu, muextrac, etc.<\/li>\n<\/ul>\n<p><img loading=\"lazy\" class=\"aligncenter size-full wp-image-250\" src=\"\/wp-content\/uploads\/2017\/08\/pafls-02-576x422.gif\" alt=\"\" width=\"576\" height=\"422\" \/><\/p>\n<p style=\"text-align: center;\">Schematic view: showing input model parameters, which may be panned, enlarged and shrunk.<\/p>\n<p><img loading=\"lazy\" class=\"aligncenter size-full wp-image-252\" src=\"\/wp-content\/uploads\/2017\/08\/pafls-04-576x422.gif\" alt=\"\" width=\"576\" height=\"422\" \/><\/p>\n<p style=\"text-align: center;\">Acoustic graph view: Pressure v Frequency graphs for selected microphone nodes.<\/p>\n<p>&nbsp;<\/p>\n<p><img loading=\"lazy\" class=\"aligncenter size-full wp-image-253\" src=\"\/wp-content\/uploads\/2017\/08\/pafls-05-576x422.gif\" alt=\"\" width=\"576\" height=\"422\" \/><\/p>\n<p style=\"text-align: center;\">Acoustic field view: pressure field in fluid at selected frequency.<\/p>\n<p><img loading=\"lazy\" class=\"aligncenter size-full wp-image-255\" src=\"\/wp-content\/uploads\/2017\/08\/pafls-07-576x422.gif\" alt=\"\" width=\"576\" height=\"422\" \/><\/p>\n<p style=\"text-align: center;\">SPL map.<\/p>\n<p>&nbsp;<\/p>\n<p><img loading=\"lazy\" class=\"aligncenter size-full wp-image-254\" src=\"\/wp-content\/uploads\/2017\/08\/pafls-06-576x422.gif\" alt=\"\" width=\"576\" height=\"422\" \/><\/p>\n<p style=\"text-align: center;\">Directivity plot.<\/p>\n<p>&nbsp;<\/p>\n<p><img loading=\"lazy\" class=\"aligncenter size-full wp-image-256\" src=\"\/wp-content\/uploads\/2017\/08\/pafls-08-576x422.gif\" alt=\"\" width=\"576\" height=\"422\" \/><\/p>\n<p style=\"text-align: center;\">Impedance v Frequency graph.<\/p>\n<p><img loading=\"lazy\" class=\"aligncenter size-full wp-image-257\" src=\"\/wp-content\/uploads\/2017\/08\/pafls-09-576x422.gif\" alt=\"\" width=\"576\" height=\"422\" \/><\/p>\n<p style=\"text-align: center;\">Axial velocity v Frequency graph for selected structural locations.<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>PACSYS has released the PafLS loudspeaker analysis tool, which provides: Generic axisymmetric loudspeaker template designs for vibroacoustic analysis\u00a0(multi-roll surround example)[&#8230;]<\/p>\n","protected":false},"author":2,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":[],"_links":{"self":[{"href":"https:\/\/pafec.kevinit.co.uk\/index.php\/wp-json\/wp\/v2\/pages\/171"}],"collection":[{"href":"https:\/\/pafec.kevinit.co.uk\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/pafec.kevinit.co.uk\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/pafec.kevinit.co.uk\/index.php\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/pafec.kevinit.co.uk\/index.php\/wp-json\/wp\/v2\/comments?post=171"}],"version-history":[{"count":10,"href":"https:\/\/pafec.kevinit.co.uk\/index.php\/wp-json\/wp\/v2\/pages\/171\/revisions"}],"predecessor-version":[{"id":865,"href":"https:\/\/pafec.kevinit.co.uk\/index.php\/wp-json\/wp\/v2\/pages\/171\/revisions\/865"}],"wp:attachment":[{"href":"https:\/\/pafec.kevinit.co.uk\/index.php\/wp-json\/wp\/v2\/media?parent=171"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}