{"id":473,"date":"2009-10-31T17:17:07","date_gmt":"2009-10-31T21:17:07","guid":{"rendered":"http:\/\/pugix.com\/synth\/?p=473"},"modified":"2024-06-29T14:06:45","modified_gmt":"2024-06-29T19:06:45","slug":"thru-zero-noise","status":"publish","type":"post","link":"https:\/\/pugix.com\/synth\/thru-zero-noise\/","title":{"rendered":"Thru zero noise"},"content":{"rendered":"

Recently I discovered and bought The Noise Generator Cookbook<\/em> by Thomas Henry, available at Lulu.com<\/a>.\u00a0 I recommend it!\u00a0 Includes a great bibliography, too.\u00a0 In addition to learning what white and pink noise really are, and reading all about noise generator circuits for synthesizers, this spurred me to spend some quality time with the noise generators in my own synthesizer.\u00a0 I’ve got a MOTM-101 Sample and Hold with white, pink, and slow random outputs.\u00a0 And a Blacet Improbability Drive with white and sampled white (‘digital’) outputs, plus a 12db lowpass\/bandpass filtered (i.e. not pink noise) output.\u00a0 I had also included a DIY white noise generator for internal sampling use with my CGS Infinite Melody.\u00a0 The Modcan VCDO has a wave bank dedicated to pseudo-random voltages.\u00a0\u00a0 All of these noise source sound different to the ears and look different on the ‘scope.\u00a0 For instance, the MOTM white noise has a lot more high frequency components than the Blacet white noise.\u00a0 (The MOTM and Blacet white noise circuits are proprietary variants of two different circuits described in Thomas Henry’s book.)<\/p>\n

The VCDO noise bank is especially interesting.\u00a0 First, it’s a voltage-controlled noise generator that goes from a pink-sounding noise at the highest frequency of the oscillator all the way down to slow meandering voltages in LFO mode.\u00a0 Second, the internal FM capability of the VCDO also affects the noise bank, affording even more varieties of noisy sound.\u00a0 I was wondering how to apply this feature and hit on the idea of using it as a modulation source for the through-zero FM of the Teezer VCO.\u00a0 Well, that’s the basic patch here.\u00a0 VCDO out to Teezer linear FM in, AC coupled.\u00a0 I used the triangle output of the Teezer into my MOTM-480 resonant filters.\u00a0 This is the result.<\/p>\n\n\n

Recently I discovered and bought The Noise Generator Cookbook by Thomas Henry, available at Lulu.com.\u00a0 I recommend it!\u00a0 Includes a great bibliography, too.\u00a0 In addition to learning what white and … Read More<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","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":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[76],"tags":[],"class_list":["post-473","post","type-post","status-publish","format-standard","hentry","category-new-music"],"yoast_head":"\nThru zero noise - 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\/thru-zero-noise\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Thru zero noise - Richard Brewster's Electronic Sounds\" \/>\n<meta property=\"og:description\" content=\"Recently I discovered and bought The Noise Generator Cookbook by Thomas Henry, available at Lulu.com.\u00a0 I recommend it!\u00a0 Includes a great bibliography, too.\u00a0 In addition to learning what white and ... 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