{"id":160,"date":"2010-02-19T21:28:15","date_gmt":"2010-02-19T21:28:15","guid":{"rendered":"http:\/\/www.revolutionsf.com\/revblogs\/zombielapdance\/2010\/02\/19\/all-the-noise-all-at-once\/"},"modified":"2012-08-17T05:23:58","modified_gmt":"2012-08-17T05:23:58","slug":"all-the-noise-all-at-once","status":"publish","type":"post","link":"https:\/\/www.revolutionsf.com\/revblogs\/zombielapdance\/2010\/02\/19\/all-the-noise-all-at-once\/","title":{"rendered":"All the noise all at once"},"content":{"rendered":"

Over the holidays I built a white noise machine for my food-frakking deputy Julia. You never know when you might need to drown out some ambient noise.
\n
\nI’ve used an old coffeecan as a project enclosure, even though I really shouldn’t. When the circuit boards have a chance to move around inside the tangle of wires, the capacitors and other parts have a tendency to pick up signals that muddy up the sound.
\n
\nIt’s based on the premise that if you put a transistor into the circuit the wrong way, it emits a chaotic power signal, which I then feed through a pair of audio amp IC chips.<\/p>\n

The variable potentiometer controls the amount of current bridging over the transistor, in effect tuning the sound.<\/p>\n

On top you can see where I glued a sponge on top of the speaker to further smooth out the noise quality. Without the muffling, Julia says it sounds like doom.<\/p>\n

And of course there are a number of LED status lights. Because you need <\/span>LED status lights.
\n<\/p>\n

This is what it sounds like.<\/a><\/p>\n

http:\/\/www.matthewbey.com\/whitenoise_machine.mp3<\/a><\/audio><\/div>

Podcast: Play in new window<\/a> | Download<\/a><\/p>","protected":false},"excerpt":{"rendered":"

Over the holidays I built a white noise machine for my food-frakking deputy Julia. You never know when you might need to drown out some ambient noise. I’ve used an old coffeecan as a project enclosure, even though I really … Continue reading →<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-160","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\nAll the noise all at once - Zombie Lapdance<\/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.revolutionsf.com\/revblogs\/zombielapdance\/2010\/02\/19\/all-the-noise-all-at-once\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"All the noise all at once - Zombie Lapdance\" \/>\n<meta property=\"og:description\" content=\"Over the holidays I built a white noise machine for my food-frakking deputy Julia. 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