Comments on: LITE2SOUND http://ericarcher.net experimental electronic media Thu, 17 May 2012 13:59:16 +0000 http://wordpress.org/?v=2.3.3 By: Derek Holzer/Tonewheels http://ericarcher.net/devices/lite2sound/#comment-7085 Derek Holzer/Tonewheels Wed, 02 Sep 2009 17:18:15 +0000 http://ericarcher.net/devices/lite2sound/#comment-7085 ...or a telescope! …or a telescope!

]]> By: Derek Holzer/Tonewheels http://ericarcher.net/devices/lite2sound/#comment-7084 Derek Holzer/Tonewheels Wed, 02 Sep 2009 17:17:34 +0000 http://ericarcher.net/devices/lite2sound/#comment-7084 Hey Eric--I plugged your project on another blog, so it's only fair to mention here this simple DIY light-to-sound converter: www.5volt.eu/archives/63 Not quite as fancy as your circuit, but good for a quick afternoon. The eavesdropping idea is an interesting one. Lev Theremin invented the "Buran" laser eavesdropping system for the KGB in 1945 by shining the laser on a glass window. The sound of people talking inside would vibrate the glass and modulate the beam. Andrei Smirnov from the Theremin Institute in Moscow (one of the more amazing people I've met in recent years) does a laser performance using this idea: asmir.theremin.ru/laser_bugging.htm Try using a big fisheye lens to catch reflections over longer distances ;-) Best! Derek Hey Eric–I plugged your project on another blog, so it’s only fair to mention here this simple DIY light-to-sound converter:

http://www.5volt.eu/archives/63

Not quite as fancy as your circuit, but good for a quick afternoon.

The eavesdropping idea is an interesting one. Lev Theremin invented the “Buran” laser eavesdropping system for the KGB in 1945 by shining the laser on a glass window. The sound of people talking inside would vibrate the glass and modulate the beam.

Andrei Smirnov from the Theremin Institute in Moscow (one of the more amazing people I’ve met in recent years) does a laser performance using this idea:

asmir.theremin.ru/laser_bugging.htm

Try using a big fisheye lens to catch reflections over longer distances ;-)

Best!
Derek

]]> By: E13 http://ericarcher.net/devices/lite2sound/#comment-6802 E13 Mon, 25 May 2009 15:43:11 +0000 http://ericarcher.net/devices/lite2sound/#comment-6802 Cool project, very elaborate electronics. As a first try, you might want to connect just a bpw34 photodiode to any sound input (see my blog, http://retrointerfacing.com/?tag=listener) This photodiode generates enough voltage to drive an input (amplifier, or PC soundcard).. I tried it with an electric candle (somebody claimed that they are using melody-chips for flickering), you can see it on youtube (http://www.youtube.com/watch?gl=NL&hl=nl&v=wDBHcDq8SR0) Cool project, very elaborate electronics. As a first try, you might want to connect just a bpw34 photodiode to any sound input (see my blog, http://retrointerfacing.com/?tag=listener) This photodiode generates enough voltage to drive an input (amplifier, or PC soundcard).. I tried it with an electric candle (somebody claimed that they are using melody-chips for flickering), you can see it on youtube (http://www.youtube.com/watch?gl=NL&hl=nl&v=wDBHcDq8SR0)

]]>