TIME-COMPRESSING INFRASONIC RECORDINGS
TO DISCOVER NEW SOUNDS
Watching ripples on a pond one day gave me an idea. Water surface waves are a common analogy for sound waves; what if water surface waves were recorded and then played back at a higher speed as sound? And how about other slow periodic phenomena? They could also be captured with an appropriate pickup and recorder. Like other "found sounds," some time-compressed infrasonic signals could find uses ranging from ring-tones to games to experimental music. My "infrasonicon" project tests the waters of this idea.
Here's an overview of the Infrasonicon. I've split it into six brief parts:
Examples of time-compressed recordings made with the Infrasonicon
Brand New: More Detailed Analysis and Discussion of Certain Recordings (added Dec. 31, 2013):
New: Sidebar Article Introducing the Physics of Water Surface Waves (added Oct. 21, 2013):
New: Technical Details of Hardware and Software (added Oct. 16, 2013):
New: On clarkhuckaby.com, I recently added an article about optical tremolo in vintage Fender amps:
Some key definitions:
Infrasonic--Literally "below sound," this adjective refers to any phenomenon, signal, or waveform having a frequecy less that 20 Hz. The phenomenon need not emit infrasound.
Infrasound--Pressure waves propagating through some medium, such as air, with frequecies less than 20 Hz (by convention, the low-frequency end of the audio band). I will soon fine-tune these definitions a bit more elsewhere within this web site.
Infrasonicon--Any channel (or set of synchronized channels) specifically designed to record an infrasonic phenomenon and then convert it to sound using high-speed playback. I coined this term and invite you to add it to your lexicon. An infrasonicon is to sound as time-lapse cinematography is to images.
Time compression--Playing back a signal faster than it was originally recorded.
Contact Clark Huckaby
Overview Sound Example Page Technical Details: Data Converter; Interface Unit; Optical Probe; Water Theremin; Audio Amplitude Detector
Contact Clark Huckaby Water Surface Waves vs. Sound Analysis: Flywheel Recording; Noise Motif Repeats Go to clarkhuckaby.com
Copyright 2011-2013 Clark Huckaby. All rights reserved. Commercial use of this content (text, images, sounds, or source code) without first obtaining the expressed permission of Clark Huckaby is prohibited by law. Distribution of copies beyond personal use and/or re-posting any or all of this page is prohibited by law.