{"id":19370,"date":"2019-02-15T15:03:16","date_gmt":"2019-02-15T14:03:16","guid":{"rendered":"https:\/\/www.recantha.co.uk\/blog\/?p=19370"},"modified":"2019-02-15T15:03:16","modified_gmt":"2019-02-15T14:03:16","slug":"playing-multiple-sound-files-on-multiple-output-devices-simultaneously-with-a-raspberry-pi","status":"publish","type":"post","link":"https:\/\/www.recantha.co.uk\/blog\/?p=19370","title":{"rendered":"Playing multiple sound files on multiple output devices simultaneously with a Raspberry Pi"},"content":{"rendered":"<p><a href=\"https:\/\/i0.wp.com\/www.recantha.co.uk\/blog\/wp-content\/uploads\/2019\/02\/multiple_sound.jpg?ssl=1\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-19371\" src=\"https:\/\/i0.wp.com\/www.recantha.co.uk\/blog\/wp-content\/uploads\/2019\/02\/multiple_sound.jpg?resize=560%2C373&#038;ssl=1\" alt=\"\" width=\"560\" height=\"373\" srcset=\"https:\/\/i0.wp.com\/www.recantha.co.uk\/blog\/wp-content\/uploads\/2019\/02\/multiple_sound.jpg?w=644&amp;ssl=1 644w, https:\/\/i0.wp.com\/www.recantha.co.uk\/blog\/wp-content\/uploads\/2019\/02\/multiple_sound.jpg?resize=300%2C200&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.recantha.co.uk\/blog\/wp-content\/uploads\/2019\/02\/multiple_sound.jpg?resize=560%2C373&amp;ssl=1 560w, https:\/\/i0.wp.com\/www.recantha.co.uk\/blog\/wp-content\/uploads\/2019\/02\/multiple_sound.jpg?resize=260%2C173&amp;ssl=1 260w, https:\/\/i0.wp.com\/www.recantha.co.uk\/blog\/wp-content\/uploads\/2019\/02\/multiple_sound.jpg?resize=160%2C107&amp;ssl=1 160w\" sizes=\"auto, (max-width: 560px) 100vw, 560px\" \/><\/a><\/p>\n<p><a href=\"https:\/\/twitter.com\/eso_logic\" target=\"_blank\" rel=\"noopener\">Devon Bray<\/a> was working on an art installation project with\u00a0<a href=\"http:\/\/www.saradittrich.com\/\" target=\"_blank\" rel=\"noopener\">Sara Dittrich<\/a>. The requirement was to play 8 different sound files out of 8 different loudspeakers and to synchronise them all. For this, Devon used a Raspberry Pi connected up to multiple amplifiers via a USB hub. He&#8217;s done a video walk-through of the project, which can be seen below, has <a href=\"http:\/\/www.esologic.com\/multi-audio\/\" target=\"_blank\" rel=\"noopener\">blooged about it here<\/a> and <a href=\"https:\/\/github.com\/esologic\/pear\" target=\"_blank\" rel=\"noopener\">uploaded his code to Github here<\/a>.<\/p>\n<p><span class=\"embed-youtube\" style=\"text-align:center; display: block;\"><iframe loading=\"lazy\" class=\"youtube-player\" width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/k1c2qlfvjBQ?version=3&#038;rel=1&#038;showsearch=0&#038;showinfo=1&#038;iv_load_policy=1&#038;fs=1&#038;hl=en-US&#038;autohide=2&#038;wmode=transparent\" allowfullscreen=\"true\" style=\"border:0;\" sandbox=\"allow-scripts allow-same-origin allow-popups allow-presentation allow-popups-to-escape-sandbox\"><\/iframe><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Devon Bray was working on an art installation project with\u00a0Sara Dittrich. The requirement was to play 8 different sound files out of 8 different loudspeakers and to synchronise them all. For this, Devon used a Raspberry Pi connected up to&hellip;<\/p>\n<p class=\"more-link-p\"><a class=\"more-link\" href=\"https:\/\/www.recantha.co.uk\/blog\/?p=19370\">Read more &rarr;<\/a><\/p>\n","protected":false},"author":1,"featured_media":19371,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_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":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[56,4,31,52],"tags":[336,858,857,856],"class_list":["post-19370","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-art","category-audio","category-music","category-video","tag-audio","tag-devon-bray","tag-mono","tag-sound-files"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Playing multiple sound files on multiple output devices simultaneously with a Raspberry Pi - Raspberry Pi Pod<\/title>\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.recantha.co.uk\/blog\/?p=19370\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Playing multiple sound files on multiple output devices simultaneously with a Raspberry Pi - Raspberry Pi Pod\" \/>\n<meta property=\"og:description\" content=\"Devon Bray was working on an art installation project with\u00a0Sara Dittrich. The requirement was to play 8 different sound files out of 8 different loudspeakers and to synchronise them all. For this, Devon used a Raspberry Pi connected up to&hellip;Read more &rarr;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.recantha.co.uk\/blog\/?p=19370\" \/>\n<meta property=\"og:site_name\" content=\"Raspberry Pi Pod\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/recantha\/\" \/>\n<meta property=\"article:published_time\" content=\"2019-02-15T14:03:16+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/i1.wp.com\/www.recantha.co.uk\/blog\/wp-content\/uploads\/2019\/02\/multiple_sound.jpg?fit=644%2C429&ssl=1\" \/>\n\t<meta property=\"og:image:width\" content=\"644\" \/>\n\t<meta property=\"og:image:height\" content=\"429\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Michael Horne\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@recantha\" \/>\n<meta name=\"twitter:site\" content=\"@recantha\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Michael Horne\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.recantha.co.uk\\\/blog\\\/?p=19370#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.recantha.co.uk\\\/blog\\\/?p=19370\"},\"author\":{\"name\":\"Michael Horne\",\"@id\":\"https:\\\/\\\/www.recantha.co.uk\\\/blog\\\/#\\\/schema\\\/person\\\/c27c4ef2ee1c18b130f1fcd5dcdbb263\"},\"headline\":\"Playing multiple sound files on multiple output devices simultaneously with a Raspberry Pi\",\"datePublished\":\"2019-02-15T14:03:16+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.recantha.co.uk\\\/blog\\\/?p=19370\"},\"wordCount\":93,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/www.recantha.co.uk\\\/blog\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/www.recantha.co.uk\\\/blog\\\/?p=19370#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/i0.wp.com\\\/www.recantha.co.uk\\\/blog\\\/wp-content\\\/uploads\\\/2019\\\/02\\\/multiple_sound.jpg?fit=644%2C429&ssl=1\",\"keywords\":[\"audio\",\"devon bray\",\"mono\",\"sound files\"],\"articleSection\":[\"Art\",\"Audio\",\"Music\",\"Video\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/www.recantha.co.uk\\\/blog\\\/?p=19370#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.recantha.co.uk\\\/blog\\\/?p=19370\",\"url\":\"https:\\\/\\\/www.recantha.co.uk\\\/blog\\\/?p=19370\",\"name\":\"Playing multiple sound files on multiple output devices simultaneously with a Raspberry Pi - 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It has the following features: text to speech synthesizer three ways of wake-up sound: play local mp3\u2026","rel":"","context":"In &quot;3D printing&quot;","block_context":{"text":"3D printing","link":"https:\/\/www.recantha.co.uk\/blog\/?cat=2"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/cdn.instructables.com\/FB0\/85LB\/IXGFI8LA\/FB085LBIXGFI8LA.LARGE.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/cdn.instructables.com\/FB0\/85LB\/IXGFI8LA\/FB085LBIXGFI8LA.LARGE.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/cdn.instructables.com\/FB0\/85LB\/IXGFI8LA\/FB085LBIXGFI8LA.LARGE.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/cdn.instructables.com\/FB0\/85LB\/IXGFI8LA\/FB085LBIXGFI8LA.LARGE.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":12659,"url":"https:\/\/www.recantha.co.uk\/blog\/?p=12659","url_meta":{"origin":19370,"position":1},"title":"Converting Twitter emotions into art with a Raspberry Pi","author":"Michael Horne","date":"27 May 2015","format":false,"excerpt":"A few of the Raspberry Pi Creative Technologists attended the Art Hackathon in Greenwich on 16th-17th May and got together with some others to create a lovely art project. The project takes a Twitter feed, analyses the tweets for keywords and assigns emotions to them. The amount of each emotion\u2026","rel":"","context":"In &quot;Art&quot;","block_context":{"text":"Art","link":"https:\/\/www.recantha.co.uk\/blog\/?cat=56"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.raspberrypi.org\/wp-content\/uploads\/2015\/05\/IMG_1048-500x333.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":20249,"url":"https:\/\/www.recantha.co.uk\/blog\/?p=20249","url_meta":{"origin":19370,"position":2},"title":"Lorraine Underwood hacks vintage-style telephones with Raspberry Pis to create an intercom system","author":"Michael Horne","date":"21 May 2020","format":false,"excerpt":"Lorraine Underwood has entered the Element14\u00a0#badass Women Makers and Engineers Contest with this great hack of a couple of vintage-style telephones from Amazon. She removed the plate on the bottom of the telephones and fitted a Raspberry Pi. 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Well,\u2026","rel":"","context":"In &quot;Art&quot;","block_context":{"text":"Art","link":"https:\/\/www.recantha.co.uk\/blog\/?cat=56"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/4.bp.blogspot.com\/-cqJ1ULGdI4I\/VEwCmxeazII\/AAAAAAAABk0\/myd_niYAqis\/s1600\/heloween.jpg?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/4.bp.blogspot.com\/-cqJ1ULGdI4I\/VEwCmxeazII\/AAAAAAAABk0\/myd_niYAqis\/s1600\/heloween.jpg?resize=350%2C200 1x, https:\/\/i0.wp.com\/4.bp.blogspot.com\/-cqJ1ULGdI4I\/VEwCmxeazII\/AAAAAAAABk0\/myd_niYAqis\/s1600\/heloween.jpg?resize=525%2C300 1.5x, https:\/\/i0.wp.com\/4.bp.blogspot.com\/-cqJ1ULGdI4I\/VEwCmxeazII\/AAAAAAAABk0\/myd_niYAqis\/s1600\/heloween.jpg?resize=700%2C400 2x, https:\/\/i0.wp.com\/4.bp.blogspot.com\/-cqJ1ULGdI4I\/VEwCmxeazII\/AAAAAAAABk0\/myd_niYAqis\/s1600\/heloween.jpg?resize=1050%2C600 3x"},"classes":[]},{"id":12469,"url":"https:\/\/www.recantha.co.uk\/blog\/?p=12469","url_meta":{"origin":19370,"position":4},"title":"Raspberry Pi Picademy goes South West","author":"Michael Horne","date":"28 April 2015","format":false,"excerpt":"In the past few months, the Raspberry Pi Foundation has put a lot effort into making their free CPD course for teachers, known as Picademy, portable so that they can take it on the road. 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