{"id":2199,"date":"2017-03-13T15:48:02","date_gmt":"2017-03-13T20:48:02","guid":{"rendered":"http:\/\/pugix.com\/synth\/?p=2199"},"modified":"2018-02-09T17:40:36","modified_gmt":"2018-02-09T22:40:36","slug":"what-is-the-quantussy","status":"publish","type":"post","link":"https:\/\/pugix.com\/synth\/what-is-the-quantussy\/","title":{"rendered":"What is the Quantussy?"},"content":{"rendered":"

\"\"<\/a><\/p>\n

Quantussy is the name Peter Blasser gave to the cluster of five oscillators in his Cocoquantus<\/a>.\u00a0 He says,<\/p>\n

The Quantussy is a five (5) petaled flower, each petal with oscirator, that creates a rhythm, that triggers quantizations of the movements of the other four oscirators.\u00a0 The Quantussy is thus both based on five (5), but four(4)… and its name also refers to Quantum Physics through its unique “double quantizing” of angular momentum.<\/p>\n

Running at low frequencies, the Quantussy is intended to provide ample modulations for the various functions of the COCOs, through inputs “FLIP”, “SKIP”, and “SP.AF”, or “Speed Affect”.\u00a0 The Quantussy petals can also run at audio frequencies, as well as “Balcium” frequencies, depending on a toggle switch.<\/p><\/blockquote>\n

Why the Quantussy?<\/h4>\n

The purpose of the Quantussy is primarily to provide modulations for the two digital delays (COCO) in the Cocoquantus. However, the applications can go far beyond that use!<\/p>\n

Generative Applications<\/h4>\n

I have an interest in generative music, automatically generated sounds that have the potential to seem as if they were intentionally composed, but in actuality are in some sense accidental, but not simply random.\u00a0 The work of creating such sounds entails discovering, often by trial and error, the right combination of control and sound generating modules, and adjustments of their many parameters.\u00a0 The Quantussy supports exactly this kind of exploration.\u00a0 It does not use random functions!\u00a0 But, since it uses analog components with slight variations over time, temperature, etc., it is not fully deterministic.\u00a0 And this led me to build emulations of it.<\/p>\n

I started digging into the Quantussy internals by studying the Cocoquantus schematic diagram<\/a>.\u00a0 I wrote a full post<\/a> about that schematic.\u00a0 Here, I want to focus on one main idea:\u00a0 that of a cycle of five cross-modulating oscillators.\u00a0 The Quantussy allows the cluster to be cross connected in many different ways, but the most interesting one is where the five are in a ring.\u00a0 Each oscillator clocks two sample and holds.\u00a0 One sample and hold is internally hooked to the frequency CV input of the oscillator.\u00a0 That is, every cycle, the oscillator can change its frequency, based on a sampled control voltage.\u00a0 The other sample and hold takes an external input and provides an output (Peter calls this the Castle).\u00a0 So you can think of this as having a CV input, an oscillator output (triangle wave), a Castle input and a Castle output.\u00a0 Roughly, like this diagram.<\/p>\n

\"\"<\/a><\/p>\n

The Audulus emulation of this:<\/p>\n

\"\"<\/a><\/p>\n

Picture five of these, arranged in a ring, with each Triangle output patched to the Castle input of the next, and also the Castle output patched to the CV in of the next.\u00a0 The Triangle wave of the first is sampled by the next, and then passed on to the CV input of the following one.\u00a0 In a ring.\u00a0 Here’s the picture of it in the Audulus emulation.<\/p>\n

\"\"<\/a><\/p>\n

The beauty of this arrangement of five is that the cross modulations spiral around, resulting in unpredictable, but somewhat repeating patterns.\u00a0 I am not sure what the mathematical correspondence would be, but it can be fractal like.<\/p>\n

The user controls consist of a three way range switch for each oscillator, a global initial frequency knob, and a global ‘chaos’ knob, which sets the modulation depth for all the cross modulations.<\/p>\n

So fascinated was I by this design that I built the Quantisise, which is a six module analog emulation, that is fully patchable.\u00a0 Explore that project with the Quantisise Tag<\/a>.<\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

Quantussy is the name Peter Blasser gave to the cluster of five oscillators in his Cocoquantus.\u00a0 He says, The Quantussy is a five (5) petaled flower, each petal with oscirator, … Read More<\/a><\/p>\n","protected":false},"author":1,"featured_media":675,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":true,"_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":[14],"tags":[189,113,180],"class_list":["post-2199","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-projects","tag-automatic-music","tag-cocoquantus","tag-quantussy"],"yoast_head":"\nWhat is the Quantussy? - Richard Brewster's Electronic Sounds<\/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:\/\/pugix.com\/synth\/what-is-the-quantussy\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What is the Quantussy? - Richard Brewster's Electronic Sounds\" \/>\n<meta property=\"og:description\" content=\"Quantussy is the name Peter Blasser gave to the cluster of five oscillators in his Cocoquantus.\u00a0 He says, The Quantussy is a five (5) petaled flower, each petal with oscirator, ... 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