{"id":44,"date":"2025-01-24T11:17:29","date_gmt":"2025-01-24T11:17:29","guid":{"rendered":"https:\/\/philbeavis-wp1.purelywebsite.com\/?p=44"},"modified":"2025-01-24T15:52:17","modified_gmt":"2025-01-24T15:52:17","slug":"generative-music","status":"publish","type":"post","link":"https:\/\/philbeavis-wp1.purelywebsite.com\/index.php\/2025\/01\/24\/generative-music\/","title":{"rendered":"A Generative Music Patch"},"content":{"rendered":"\n<p>Recently I found a new way to configure my modular synthesizer to generate semi-random musical parts. Hear is an example&#8230;<\/p>\n\n\n\n<figure class=\"wp-block-audio\"><audio controls src=\"https:\/\/philbeavis-wp1.purelywebsite.com\/wp-content\/uploads\/2025\/01\/FourLFO-Generative-Pentonic-C-120bpm-mix2.mp3\"><\/audio><\/figure>\n\n\n\n<p>The somewhat oriental flavour comes from constraining all notes to a major pentatonic scale: C, D, E, G, A. All the sounds were made using a replica of the famous 1970&#8217;s &#8216;<a href=\"https:\/\/en.wikipedia.org\/wiki\/Minimoog\" target=\"_blank\" rel=\"noreferrer noopener\">Minimoog<\/a>&#8216;. <\/p>\n\n\n\n<p>Only the main tune (heard at the beginning) was actually played by hand. All the other parts were generated automatically using variations on the system below.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"829\" height=\"401\" src=\"https:\/\/philbeavis-wp1.purelywebsite.com\/wp-content\/uploads\/2025\/01\/Generative-4LFO-Patch.drawio.png\" alt=\"\" class=\"wp-image-46\" srcset=\"https:\/\/philbeavis-wp1.purelywebsite.com\/wp-content\/uploads\/2025\/01\/Generative-4LFO-Patch.drawio.png 829w, https:\/\/philbeavis-wp1.purelywebsite.com\/wp-content\/uploads\/2025\/01\/Generative-4LFO-Patch.drawio-300x145.png 300w, https:\/\/philbeavis-wp1.purelywebsite.com\/wp-content\/uploads\/2025\/01\/Generative-4LFO-Patch.drawio-768x371.png 768w\" sizes=\"auto, (max-width: 829px) 100vw, 829px\" \/><\/figure>\n\n\n\n<p>Like all analogue synthesizers, it relies on the principle of &#8220;Voltage Control&#8221; proposed by Dr Robert Moog in his <a href=\"https:\/\/moogfoundation.org\/wp-content\/uploads\/AES-1964-No0320-Modules.pdf\" target=\"_blank\" rel=\"noreferrer noopener\">1964 paper<\/a>. For example, pitch is calibrated at 1 volt per octave.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The Sequencer, a replica of the <a href=\"https:\/\/alanrpearlmanfoundation.org\/the-arp-module-1027-clocked-sequential-control\/\" target=\"_blank\" rel=\"noreferrer noopener\">ARP 1027<\/a> module, is stepped slowly, say every 4 beats (whole note), to produce a different Control Voltage (CV) at each step. <\/li>\n\n\n\n<li>This CV is modified by a voltage processor (based on <a href=\"https:\/\/www.makenoisemusic.com\/modules\/maths\/\" target=\"_blank\" rel=\"noreferrer noopener\">MATHS<\/a>), to produce a smoothly varying CV, say in the range 3-5 volts (equivalent to 2 octaves).<\/li>\n\n\n\n<li>Next, a <a href=\"https:\/\/www.thonk.co.uk\/shop\/kassutronics-quantizer-kit\/\" target=\"_blank\" rel=\"noreferrer noopener\">Quantizer<\/a> is used to repeatedly sample the CV, say at each half beat (eighth note), picking the nearest note from the chosen scale, and holding for the duration of the note. <\/li>\n\n\n\n<li>Finally, this modified CV controls the pitch of the <a href=\"https:\/\/www.behringer.com\/behringer\/product?modelCode=0718-AAC\" target=\"_blank\" rel=\"noreferrer noopener\">&#8216;Model D&#8217; replica<\/a> monophonic synthesizer. The sounds can be further triggered and timbre modulated independently.<\/li>\n<\/ul>\n\n\n\n<p> All the timing is controlled by four Low Frequency Oscillators (LFO), synchronised in different ratios to drive the various components at different rates.<\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Recently I found a new way to configure my modular synthesizer to generate semi-random musical parts. Hear is an example&#8230; The somewhat oriental flavour comes from constraining all notes to a major pentatonic scale: C, D, E, G, A. All the sounds were made using a replica of the famous 1970&#8217;s &#8216;Minimoog&#8216;. Only the main [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[9],"tags":[8,10,6,7],"class_list":["post-44","post","type-post","status-publish","format-standard","hentry","category-music","tag-generative","tag-modular","tag-music","tag-synthesizer"],"_links":{"self":[{"href":"https:\/\/philbeavis-wp1.purelywebsite.com\/index.php\/wp-json\/wp\/v2\/posts\/44","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/philbeavis-wp1.purelywebsite.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/philbeavis-wp1.purelywebsite.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/philbeavis-wp1.purelywebsite.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/philbeavis-wp1.purelywebsite.com\/index.php\/wp-json\/wp\/v2\/comments?post=44"}],"version-history":[{"count":19,"href":"https:\/\/philbeavis-wp1.purelywebsite.com\/index.php\/wp-json\/wp\/v2\/posts\/44\/revisions"}],"predecessor-version":[{"id":119,"href":"https:\/\/philbeavis-wp1.purelywebsite.com\/index.php\/wp-json\/wp\/v2\/posts\/44\/revisions\/119"}],"wp:attachment":[{"href":"https:\/\/philbeavis-wp1.purelywebsite.com\/index.php\/wp-json\/wp\/v2\/media?parent=44"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/philbeavis-wp1.purelywebsite.com\/index.php\/wp-json\/wp\/v2\/categories?post=44"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/philbeavis-wp1.purelywebsite.com\/index.php\/wp-json\/wp\/v2\/tags?post=44"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}