MetaFilter posts tagged with Audio and physics

Symmetry. Shakespeare. Islamic medicine. Creative writing challenges.

Wolfdog — Sun, 18 Nov 2007 03:28:17 -0800

Symmetry. Shakespeare. Islamic medicine. Creative writing challenges. Four podcast series from University of Warwick.

I've got moves you haven't even seen yet

Blazecock Pileon — Mon, 16 Jul 2007 01:29:51 -0800

What is the relationship between the optical groove in a record or wax cylinder and sound, and how can we use this to recover analog recordings from the past? Dr. Carl Haber explains IRENE (.pdf; begin at slide 44 for audio samples).

QuIET is the New Loud

terrapin — Tue, 28 Nov 2006 10:14:24 -0800

University of Arizona physicists have discovered how to turn single molecules into working transistors. The research could result in much smaller, more powerful computers and other devices with the ability to process many more channels of high-resolution audio and video than current products can manage. The abstract is available in PDF.

Voices from the past

starscream — Mon, 26 Jul 2004 19:02:03 -0800

Getting back into the groove : In the corner of a California university laboratory, two men are battling against time to perfect a machine that will read old recordings - using special microscopes to scan the grooves - and software that can convert those shapes into sound. Their work could bring history to life.

lagado — Sun, 28 Jan 2001 19:50:45 -0800

There's been a lot of talk of late about signal-to-noise ratios here on MeFi (er, Ashcroft who?...). Generally, we think of noise as something that always degrades the quality of a signal. Sometimes, however, the opposite can be the case. Here's a neat little demonstration of a non-linear system in which noise can be used to amplify a signal that would otherwise be too be faint to detect any other way. It exploits a phenomenon known as Stochastic Resonance.