{"id":1683,"date":"2015-10-16T17:06:19","date_gmt":"2015-10-16T22:06:19","guid":{"rendered":"http:\/\/pugix.com\/synth\/?p=1683"},"modified":"2016-02-14T09:45:11","modified_gmt":"2016-02-14T14:45:11","slug":"biometric-synthesizer","status":"publish","type":"post","link":"https:\/\/pugix.com\/synth\/biometric-synthesizer\/","title":{"rendered":"Biometric Synthesizer"},"content":{"rendered":"<p><a href=\"https:\/\/i0.wp.com\/pugix.com\/synth\/wp-content\/uploads\/2015\/10\/biometric-synth-top.jpg?ssl=1\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"1685\" data-permalink=\"https:\/\/pugix.com\/synth\/biometric-synthesizer\/biometric-synth-top\/\" data-orig-file=\"https:\/\/i0.wp.com\/pugix.com\/synth\/wp-content\/uploads\/2015\/10\/biometric-synth-top.jpg?fit=1000%2C526&amp;ssl=1\" data-orig-size=\"1000,526\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"biometric-synth-top\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/pugix.com\/synth\/wp-content\/uploads\/2015\/10\/biometric-synth-top.jpg?fit=1000%2C526&amp;ssl=1\" class=\"aligncenter wp-image-1685 size-medium\" src=\"https:\/\/i0.wp.com\/pugix.com\/synth\/wp-content\/uploads\/2015\/10\/biometric-synth-top.jpg?resize=500%2C263&#038;ssl=1\" alt=\"biometric-synth-top\" width=\"500\" height=\"263\" srcset=\"https:\/\/i0.wp.com\/pugix.com\/synth\/wp-content\/uploads\/2015\/10\/biometric-synth-top.jpg?resize=500%2C263&amp;ssl=1 500w, https:\/\/i0.wp.com\/pugix.com\/synth\/wp-content\/uploads\/2015\/10\/biometric-synth-top.jpg?resize=220%2C116&amp;ssl=1 220w, https:\/\/i0.wp.com\/pugix.com\/synth\/wp-content\/uploads\/2015\/10\/biometric-synth-top.jpg?resize=250%2C132&amp;ssl=1 250w, https:\/\/i0.wp.com\/pugix.com\/synth\/wp-content\/uploads\/2015\/10\/biometric-synth-top.jpg?resize=355%2C187&amp;ssl=1 355w, https:\/\/i0.wp.com\/pugix.com\/synth\/wp-content\/uploads\/2015\/10\/biometric-synth-top.jpg?resize=730%2C384&amp;ssl=1 730w, https:\/\/i0.wp.com\/pugix.com\/synth\/wp-content\/uploads\/2015\/10\/biometric-synth-top.jpg?resize=90%2C47&amp;ssl=1 90w, https:\/\/i0.wp.com\/pugix.com\/synth\/wp-content\/uploads\/2015\/10\/biometric-synth-top.jpg?w=1000&amp;ssl=1 1000w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a>Here&#8217;s a miniature synthesizer, purpose built to work with my biometric modules.\u00a0 In addition to the brainwave and muscle sensing control modules, it has two VCOs, two VCA\/ring modulators, and a cycling slewing module for generating envelopes.\u00a0 There&#8217;s also a 2 hp dual multiple to use up the space that remained.<\/p>\n<p>Left to right:<\/p>\n<ul>\n<li><a href=\"http:\/\/www.sound-machines.it\/index.php\/bi1brainterface\/\" target=\"_blank\">SoundMachine BI1 Brainterface<\/a><\/li>\n<li><a href=\"http:\/\/www.addacsystem.com\/product\/addac300-series\/addac303\" target=\"_blank\">ADDAC Systems Muscle Sensing<\/a><\/li>\n<li><a href=\"http:\/\/pittsburghmodular.com\/multiple\/\" target=\"_blank\">Pittsburgh Modular multiple<\/a><\/li>\n<li><a href=\"http:\/\/makenoisemusic.com\/function.shtml\" target=\"_blank\">MakeNoise Function<\/a><\/li>\n<li><a href=\"http:\/\/makenoisemusic.com\/moddemix.shtml\" target=\"_blank\">MakeNoise modDemix<\/a><\/li>\n<li><a href=\"http:\/\/makenoisemusic.com\/sto.shtml\" target=\"_blank\">MakeNoise STO<\/a> (2)<\/li>\n<\/ul>\n<p>I described the Brainterface in an earlier post, when it came to live in the Eurorack case I use for manual controllers.\u00a0 (That case is getting more manual controllers.)<\/p>\n<p>The ADDAC303 Muscle Sensing is new.\u00a0 It&#8217;s part of my exploration of biometric sensors for controlling synthesis.\u00a0 It works quite well to pick up muscle movement from three sensors attached to the body.\u00a0 I expect to be posting more about experiments with it.\u00a0 Suffice to say here that it puts out a control voltage and also a gate signal.<\/p>\n<p>I really enjoy linear FM, especially when two oscillators can cross modulate sine waves.\u00a0 The MakeNoise STO fits the bill nicely.\u00a0 It has sine wave output and linear FM.\u00a0 And it also sports a Sub-Oscillator output with a very unusual feature:\u00a0 it can be gated on and off.\u00a0 Plus, there is a variable wave shape output with voltage control.\u00a0 Plus sync, exponential FM.\u00a0 A very nice VCO.<\/p>\n<p>Add to this the MakeNoise modDemix, a very flexible dual VCA and ring modulator.\u00a0 Patched to the Linear FM input, a modDemix VCA gets you dynamic depth linear FM.\u00a0 The ring modular dimension affords yet another way of combining the two oscillators.\u00a0 ModDemix can also serve as the output mixer.<\/p>\n<p>MakeNoise Function is yet another variant on the universal slewing module pioneered by Serge, and it does the job nicely.\u00a0 It can serve as an envelope generator, variable slope LFO, sample and hold, and so on.\u00a0 It can be triggered by brain wave or muscle changes.\u00a0 Nice for sweeping any of the control inputs on oscillators or VCAs.<\/p>\n<h4>STO Cross Modulation Test Recordings<\/h4>\n<p>These test recordings show off the modulation capabilities of the STO.\u00a0 (The biometric controllers are not used for these demos.)<\/p>\n<p>For this test I patched the sine wave output of each STO to the linear FM input of the other STO.\u00a0 The output is taken from one of the STO sine waves.\u00a0 Initially you hear just a manual sweep of the frequency.\u00a0 Then the FM level is brought up, one way, and various frequencies manually played with.\u00a0 Finally, the cross FM level is brought up, so you get a sense of the sonic possibilities.<\/p>\n<audio class=\"wp-audio-shortcode\" id=\"audio-1683-1\" preload=\"none\" style=\"width: 100%;\" controls=\"controls\"><source type=\"audio\/mpeg\" src=\"https:\/\/pugix.com\/synth\/wp-content\/uploads\/2015\/10\/sto-linear-cross-fm.mp3?_=1\" \/><a href=\"https:\/\/pugix.com\/synth\/wp-content\/uploads\/2015\/10\/sto-linear-cross-fm.mp3\">https:\/\/pugix.com\/synth\/wp-content\/uploads\/2015\/10\/sto-linear-cross-fm.mp3<\/a><\/audio>\n<p>The next recording is a demonstration of cross patching the STO Sub-Oscillator outputs into the S-Gate input that turns the Sub-Oscillator on and off.\u00a0 Similar to the first recording you first hear one Sub output by itself.\u00a0 Then that output is S-Gated by the Sub output of the other STO.\u00a0 Finally, the second STO has its Sub output gated by the Sub output of the first.\u00a0 Kind of crazy!\u00a0 You&#8217;ll hear silence at a few points where the output is totally gated off.<\/p>\n<audio class=\"wp-audio-shortcode\" id=\"audio-1683-2\" preload=\"none\" style=\"width: 100%;\" controls=\"controls\"><source type=\"audio\/mpeg\" src=\"https:\/\/pugix.com\/synth\/wp-content\/uploads\/2015\/10\/sto-suboct-cross-2.mp3?_=2\" \/><a href=\"https:\/\/pugix.com\/synth\/wp-content\/uploads\/2015\/10\/sto-suboct-cross-2.mp3\">https:\/\/pugix.com\/synth\/wp-content\/uploads\/2015\/10\/sto-suboct-cross-2.mp3<\/a><\/audio>\n<p>I tried cross patching the wave output to modulate the waves of each other, but (as noted in the STO manual) audio rate modulations on the wave selection are not that useful.\u00a0 So instead, here, I made a demonstration where one STO wave output is heard, with its waveform being swept by a slow cycle from the Function module.\u00a0 Then at one point, linear FM of that STO is done by using the other STO.<\/p>\n<audio class=\"wp-audio-shortcode\" id=\"audio-1683-3\" preload=\"none\" style=\"width: 100%;\" controls=\"controls\"><source type=\"audio\/mpeg\" src=\"https:\/\/pugix.com\/synth\/wp-content\/uploads\/2015\/10\/sto-swept-wave-lin-fm.mp3?_=3\" \/><a href=\"https:\/\/pugix.com\/synth\/wp-content\/uploads\/2015\/10\/sto-swept-wave-lin-fm.mp3\">https:\/\/pugix.com\/synth\/wp-content\/uploads\/2015\/10\/sto-swept-wave-lin-fm.mp3<\/a><\/audio>\n","protected":false},"excerpt":{"rendered":"<p>Here&#8217;s a miniature synthesizer, purpose built to work with my biometric modules.\u00a0 In addition to the brainwave and muscle sensing control modules, it has two VCOs, two VCA\/ring modulators, and &#8230; <a class=\"styledbutton\" href=\"https:\/\/pugix.com\/synth\/biometric-synthesizer\/\">Read More<\/a><\/p>\n","protected":false},"author":1,"featured_media":1684,"comment_status":"open","ping_status":"open","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":[161,14],"tags":[159,160],"class_list":["post-1683","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-eurorack","category-projects","tag-eurorack","tag-makenoise"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - 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