{"id":2041,"date":"2024-11-12T14:39:16","date_gmt":"2024-11-12T14:39:16","guid":{"rendered":"https:\/\/www.brucewiggins.co.uk\/?p=2041"},"modified":"2024-11-15T09:34:27","modified_gmt":"2024-11-15T09:34:27","slug":"spaced-stereo-mic-extraction-from-ambisonic-recordings","status":"publish","type":"post","link":"https:\/\/www.brucewiggins.co.uk\/?p=2041","title":{"rendered":"Spaced Stereo Mic Extraction from Ambisonic Recordings"},"content":{"rendered":"\n<p>Last year, Bo-Erik Sandholm (https:\/\/www.ohti.xyz) asked me if it was possible to generate spaced stereo microphone outputs from 3rd order Ambisonic recordings.  <\/p>\n\n\n\n<p>It is possible, and the details of the start of this work can be found in: <\/p>\n\n\n\n<p>Girijavallabhan, A.. and Wiggins, B., (2024). A Subjective Comparison Of Virtual Stereo Microphone Techniques For Rendering Ambisonics. Reproduced Sound 2024, Vol. 46 Pt. (3). Available at:<br><a href=\"https:\/\/www.ioa.org.uk\/catalogue\/paper\/subjective-comparison-virtual-stereo-microphone-techniques-rendering-ambisonics\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/www.ioa.org.uk\/catalogue\/paper\/subjective-comparison-virtual-stereo-microphone-techniques-rendering-ambisonics<\/a><\/p>\n\n\n\n<p>I&#8217;ll add more accessible detail on the process soon (the paper is out today, and I present the work on Thursday at Reproduced Sound 2024 in Bristol), but below is a downloadable version of a Reaper project that incorporates the filters for a variety of standard space mic arrays!<\/p>\n\n\n<a  data-e-Disable-Page-Transition=\"true\" class=\"download-link\" title=\"\" href=\"https:\/\/www.brucewiggins.co.uk?download=2043&amp;tmstv=1777450902\" rel=\"nofollow\" id=\"download-link-2043\" data-redirect=\"false\" >\n\tSpaced Microphone from Ambisonics Reaper Project\t(33026 downloads\t)\n<\/a>\n\n","protected":false},"excerpt":{"rendered":"<p>Last year, Bo-Erik Sandholm (https:\/\/www.ohti.xyz) asked me if it was possible to generate spaced stereo microphone outputs from 3rd order Ambisonic recordings. It is possible, and the details of the start of this work can be found in: Girijavallabhan, A.. and Wiggins, B., (2024). A Subjective Comparison Of Virtual Stereo Microphone Techniques For Rendering Ambisonics. &hellip; <\/p>\n<p class=\"link-more\"><a href=\"https:\/\/www.brucewiggins.co.uk\/?p=2041\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;Spaced Stereo Mic Extraction from Ambisonic Recordings&#8221;<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-2041","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p2iYFT-wV","jetpack_likes_enabled":true,"jetpack-related-posts":[{"id":1799,"url":"https:\/\/www.brucewiggins.co.uk\/?p=1799","url_meta":{"origin":2041,"position":0},"title":"WHAM &#8211; Webcam Head-track AMbisonics","author":"Bruce Wiggins","date":"January 27th,  2022","format":false,"excerpt":"The restrictions imposed by the pandemic thwarted the continuation of \u2018in-person\u2019 listening tests into Ambisonic Order and transparency over head-tracked headphones in 2020\/21, which is an ongoing project using Very High Order Ambisonics (up to 35th) and hardware head-tracking. It raised the question, \u201cHow do we maintain our essential test\u2026","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.brucewiggins.co.uk\/wp-content\/uploads\/2022\/01\/image-3.png?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.brucewiggins.co.uk\/wp-content\/uploads\/2022\/01\/image-3.png?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.brucewiggins.co.uk\/wp-content\/uploads\/2022\/01\/image-3.png?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.brucewiggins.co.uk\/wp-content\/uploads\/2022\/01\/image-3.png?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":700,"url":"https:\/\/www.brucewiggins.co.uk\/?p=700","url_meta":{"origin":2041,"position":1},"title":"YouTube 360 VR Ambisonics Teardown!","author":"Bruce Wiggins","date":"April 28th,  2016","format":false,"excerpt":"UPDATE : 4th May 2016 - I've added a video using the measured filters. This will be useful for auditioning the mixes before uploading them to YouTube. So, I've\u00a0been experimenting with YouTube's Ambisonic to Binaural VR videos. \u00a0They work, sound spacious and head tracking also functions (although there seems to\u2026","rel":"","context":"In &quot;Ambisonics&quot;","block_context":{"text":"Ambisonics","link":"https:\/\/www.brucewiggins.co.uk\/?cat=3"},"img":{"alt_text":"You Tube HRIRs 0 degrees","src":"https:\/\/i0.wp.com\/www.brucewiggins.co.uk\/wp-content\/uploads\/2016\/04\/YouTubeHRIRs00-300x222.png?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":1836,"url":"https:\/\/www.brucewiggins.co.uk\/?p=1836","url_meta":{"origin":2041,"position":2},"title":"Stereo to Ambisonics using UHJ","author":"Bruce Wiggins","date":"March 3rd,  2022","format":false,"excerpt":"Back in 1983, Michael Gerzon presented a 2, 3 or 4 channel encoding system called UHJ where the 1st two channels are stereo compatible Left and Right signals. This was, in the 4-channel incarnation, a lossless transcoding of the W, X, Y and Z channels of Ambisonics. If only the\u2026","rel":"","context":"With 2 comments","block_context":{"text":"With 2 comments","link":"https:\/\/www.brucewiggins.co.uk\/?p=1836#comments"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.brucewiggins.co.uk\/wp-content\/uploads\/2022\/03\/image-2.png?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.brucewiggins.co.uk\/wp-content\/uploads\/2022\/03\/image-2.png?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.brucewiggins.co.uk\/wp-content\/uploads\/2022\/03\/image-2.png?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.brucewiggins.co.uk\/wp-content\/uploads\/2022\/03\/image-2.png?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":744,"url":"https:\/\/www.brucewiggins.co.uk\/?p=744","url_meta":{"origin":2041,"position":3},"title":"Sounds in Space &#8211; Audio for Virtual Reality Animations","author":"Bruce Wiggins","date":"July 27th,  2016","format":false,"excerpt":"I've had a few people ask for me to share the animations from my Surround Audio for VR presentation that I delivered\u00a0at Sounds in Space this year. \u00a0I've made a video of the powerpoint (30 seconds per slide) so everything can be viewed in context (note there's no audio, though!).\u2026","rel":"","context":"In &quot;Ambisonics&quot;","block_context":{"text":"Ambisonics","link":"https:\/\/www.brucewiggins.co.uk\/?cat=3"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/img.youtube.com\/vi\/gAmXcPfrj-M\/0.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":33,"url":"https:\/\/www.brucewiggins.co.uk\/?p=33","url_meta":{"origin":2041,"position":4},"title":"WigWare @ Glastonbury","author":"Bruce Wiggins","date":"July 5th,  2010","format":false,"excerpt":"It\u2019s good to see that, even though The Glade festival wasn\u2019t on this year, The Glade area of Glastonbury 2010 was being run by Funktion One using my WigWare Ambisonic Plug-ins to create a large scale Ambisonic surround sound experience! We tested large scale Ambisonics at The Glade festival a\u2026","rel":"","context":"In &quot;Ambisonics&quot;","block_context":{"text":"Ambisonics","link":"https:\/\/www.brucewiggins.co.uk\/?cat=3"},"img":{"alt_text":"IMG_3354","src":"https:\/\/i0.wp.com\/www.brucewiggins.co.uk\/wp-content\/uploads\/2010\/07\/IMG_3354_thumb1.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":666,"url":"https:\/\/www.brucewiggins.co.uk\/?p=666","url_meta":{"origin":2041,"position":5},"title":"YouTube, Ambisonics and VR","author":"Bruce Wiggins","date":"April 25th,  2016","format":false,"excerpt":"Introduction So, last week Google enabled head (phone!) tracked positional audio on 360 degree videos. \u00a0Ambisonics is now one of the defacto standards for VR audio. \u00a0This is a big moment! \u00a0I've been playing a little with some of the command line tools needed to get this to work, and\u2026","rel":"","context":"In &quot;Ambisonics&quot;","block_context":{"text":"Ambisonics","link":"https:\/\/www.brucewiggins.co.uk\/?cat=3"},"img":{"alt_text":"AmbiSignalRemap","src":"https:\/\/i0.wp.com\/www.brucewiggins.co.uk\/wp-content\/uploads\/2016\/04\/AmbiSignalRemap.jpg?resize=350%2C200","width":350,"height":200},"classes":[]}],"_links":{"self":[{"href":"https:\/\/www.brucewiggins.co.uk\/index.php?rest_route=\/wp\/v2\/posts\/2041","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.brucewiggins.co.uk\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.brucewiggins.co.uk\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.brucewiggins.co.uk\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.brucewiggins.co.uk\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2041"}],"version-history":[{"count":4,"href":"https:\/\/www.brucewiggins.co.uk\/index.php?rest_route=\/wp\/v2\/posts\/2041\/revisions"}],"predecessor-version":[{"id":2048,"href":"https:\/\/www.brucewiggins.co.uk\/index.php?rest_route=\/wp\/v2\/posts\/2041\/revisions\/2048"}],"wp:attachment":[{"href":"https:\/\/www.brucewiggins.co.uk\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2041"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.brucewiggins.co.uk\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2041"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.brucewiggins.co.uk\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2041"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}