{"id":48,"date":"2007-09-22T16:59:37","date_gmt":"2007-09-22T14:59:37","guid":{"rendered":"http:\/\/www.savioursofsoul.de\/Christian\/?page_id=48"},"modified":"2016-01-01T14:22:22","modified_gmt":"2016-01-01T13:22:22","slug":"measurements","status":"publish","type":"page","link":"https:\/\/www.pcjv.de\/?page_id=48","title":{"rendered":"Measurements"},"content":{"rendered":"<p>Here you can find several measurements I made in the past. The measurements have been done solely using my own, proprietary tools. I will add some more in the future, if I find some time for it.<\/p>\n<h4>Interaural Difference<\/h4>\n<p><a href=\"https:\/\/www.pcjv.de\/wordpress\/wp-content\/uploads\/2008\/11\/eardiff.png\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.pcjv.de\/wordpress\/wp-content\/uploads\/2008\/11\/eardiff-299x99.png\" alt=\"\" title=\"Interaural Difference\" width=\"299\" height=\"99\" class=\"alignnone size-medium wp-image-335\" srcset=\"https:\/\/www.pcjv.de\/wordpress\/wp-content\/uploads\/2008\/11\/eardiff-299x99.png 299w, https:\/\/www.pcjv.de\/wordpress\/wp-content\/uploads\/2008\/11\/eardiff.png 562w\" sizes=\"auto, (max-width: 299px) 100vw, 299px\" \/><\/a><br \/>\nFor my work on the VST plugin &#8216;HeadphoneMix&#8217;, I needed to evaluate the crosstalk from the left speaker to the right ear and vice versa. To find a more or less globally valid transfer function I averaged every single transfer function in my HRTF database (from about 50 different persons). The function represents the magnitude. It turned out to be naturally that smooth.<\/p>\n<p><\/p>\n<h4>C-Weighting Filter<\/h4>\n<p><a href=\"https:\/\/www.pcjv.de\/wordpress\/wp-content\/uploads\/2008\/11\/c-weight.png\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.pcjv.de\/wordpress\/wp-content\/uploads\/2008\/11\/c-weight-300x164.png\" alt=\"\" title=\"Comparison of an analogue C-Weight filter and its simple digital implementation using bilinear transformation\" width=\"300\" height=\"164\" class=\"alignnone size-medium wp-image-338\" srcset=\"https:\/\/www.pcjv.de\/wordpress\/wp-content\/uploads\/2008\/11\/c-weight-300x164.png 300w, https:\/\/www.pcjv.de\/wordpress\/wp-content\/uploads\/2008\/11\/c-weight.png 840w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/p>\n<p>Comparison of an analogue C-Weight filter and its simple digital implementation using bilinear transformation<\/p>\n<p><\/p>\n<h4>Lowpass filter comparison<\/h4>\n<p><a href=\"https:\/\/www.pcjv.de\/wordpress\/wp-content\/uploads\/2008\/11\/lowpass.png\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.pcjv.de\/wordpress\/wp-content\/uploads\/2008\/11\/lowpass-300x221.png\" alt=\"\" title=\"3 lowpass filters\" width=\"300\" height=\"221\" class=\"alignnone size-medium wp-image-341\" srcset=\"https:\/\/www.pcjv.de\/wordpress\/wp-content\/uploads\/2008\/11\/lowpass-300x221.png 300w, https:\/\/www.pcjv.de\/wordpress\/wp-content\/uploads\/2008\/11\/lowpass.png 574w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><br \/>\n<a href=\"https:\/\/www.pcjv.de\/wordpress\/wp-content\/uploads\/2008\/11\/lowpassgd.png\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.pcjv.de\/wordpress\/wp-content\/uploads\/2008\/11\/lowpassgd-300x156.png\" alt=\"\" title=\"Lowpass group delay\" width=\"300\" height=\"156\" class=\"alignnone size-medium wp-image-342\" srcset=\"https:\/\/www.pcjv.de\/wordpress\/wp-content\/uploads\/2008\/11\/lowpassgd-300x156.png 300w, https:\/\/www.pcjv.de\/wordpress\/wp-content\/uploads\/2008\/11\/lowpassgd.png 686w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><br \/>\nI compared three different lowpass filter characteristics here. Beside the magnitude, I also plotted the group delay.<\/p>\n<p><\/p>\n<h4>Behringer Composer<\/h4>\n<p>Out of interest I once performed some measurements of the Behringer &#8216;Composer&#8217;. Here are some result plots:<\/p>\n<p><a href=\"https:\/\/www.pcjv.de\/wordpress\/wp-content\/uploads\/2008\/11\/gate.png\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.pcjv.de\/wordpress\/wp-content\/uploads\/2008\/11\/gate-300x226.png\" alt=\"\" title=\"Behringer Composer - Gate\" width=\"300\" height=\"226\" class=\"alignnone size-medium wp-image-344\" srcset=\"https:\/\/www.pcjv.de\/wordpress\/wp-content\/uploads\/2008\/11\/gate-300x226.png 300w, https:\/\/www.pcjv.de\/wordpress\/wp-content\/uploads\/2008\/11\/gate.png 800w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><br \/>\nGate (static characteristic)<\/p>\n<p><a href=\"https:\/\/www.pcjv.de\/wordpress\/wp-content\/uploads\/2008\/11\/key-filter.png\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.pcjv.de\/wordpress\/wp-content\/uploads\/2008\/11\/key-filter-300x96.png\" alt=\"\" title=\"Behringer Composer - Key filter\" width=\"300\" height=\"96\" class=\"alignnone size-medium wp-image-345\" srcset=\"https:\/\/www.pcjv.de\/wordpress\/wp-content\/uploads\/2008\/11\/key-filter-300x96.png 300w, https:\/\/www.pcjv.de\/wordpress\/wp-content\/uploads\/2008\/11\/key-filter.png 800w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><br \/>\nKey Filter (magnitude)<\/p>\n<p><a href=\"https:\/\/www.pcjv.de\/wordpress\/wp-content\/uploads\/2008\/11\/peak-limiter.png\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.pcjv.de\/wordpress\/wp-content\/uploads\/2008\/11\/peak-limiter-300x226.png\" alt=\"\" title=\"Behringer Composer - Peak Limiter\" width=\"300\" height=\"226\" class=\"alignnone size-medium wp-image-346\" srcset=\"https:\/\/www.pcjv.de\/wordpress\/wp-content\/uploads\/2008\/11\/peak-limiter-300x226.png 300w, https:\/\/www.pcjv.de\/wordpress\/wp-content\/uploads\/2008\/11\/peak-limiter.png 800w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><br \/>\nPeak Limiter (static characteristic)<\/p>\n<p><a href=\"https:\/\/www.pcjv.de\/wordpress\/wp-content\/uploads\/2008\/11\/static-characteristic.png\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.pcjv.de\/wordpress\/wp-content\/uploads\/2008\/11\/static-characteristic-300x227.png\" alt=\"\" title=\"Behringer Composer - Static characteristic\" width=\"300\" height=\"227\" class=\"alignnone size-medium wp-image-347\" srcset=\"https:\/\/www.pcjv.de\/wordpress\/wp-content\/uploads\/2008\/11\/static-characteristic-300x227.png 300w, https:\/\/www.pcjv.de\/wordpress\/wp-content\/uploads\/2008\/11\/static-characteristic.png 800w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><br \/>\nCompressor (static characteristic)<\/p>\n<p><a href=\"https:\/\/www.pcjv.de\/wordpress\/wp-content\/uploads\/2008\/11\/release-shortest-005.png\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.pcjv.de\/wordpress\/wp-content\/uploads\/2008\/11\/release-shortest-005-300x206.png\" alt=\"\" title=\"Behringer Composer - Time Domain shortest release curve\" width=\"300\" height=\"206\" class=\"alignnone size-medium wp-image-348\" srcset=\"https:\/\/www.pcjv.de\/wordpress\/wp-content\/uploads\/2008\/11\/release-shortest-005-300x206.png 300w, https:\/\/www.pcjv.de\/wordpress\/wp-content\/uploads\/2008\/11\/release-shortest-005.png 753w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><br \/>\nRelease curve (time domain)<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Here you can find several measurements I made in the past. The measurements have been done solely using my own, proprietary tools. I will add some more in the future, if I find some time for it. Interaural Difference For my work on the VST plugin &#8216;HeadphoneMix&#8217;, I needed to evaluate the crosstalk from the [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-48","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Measurements - Christian&#039;s private site<\/title>\n<meta name=\"description\" content=\"Here you can find several measurements I have done in the past. The results were needed either for a VST-Plug-In or a publication.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.pcjv.de\/?page_id=48\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.pcjv.de\/?page_id=48\",\"url\":\"https:\/\/www.pcjv.de\/?page_id=48\",\"name\":\"Measurements - Christian&#039;s private site\",\"isPartOf\":{\"@id\":\"https:\/\/www.pcjv.de\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.pcjv.de\/?page_id=48#primaryimage\"},\"image\":{\"@id\":\"https:\/\/www.pcjv.de\/?page_id=48#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.pcjv.de\/wordpress\/wp-content\/uploads\/2008\/11\/eardiff-299x99.png\",\"datePublished\":\"2007-09-22T14:59:37+00:00\",\"dateModified\":\"2016-01-01T13:22:22+00:00\",\"description\":\"Here you can find several measurements I have done in the past. 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