Re: [LAU] Looking for Audio Watermarking Advice & Tools

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To: Fons Adriaensen <fons@...>
Cc: <linux-audio-user@...>
Date: Thursday, October 27, 2011 - 11:40 am

> A variation on this is used to check the authenticity of some

At least in NA, mains frequency is very very stable. The entire
continent is in phase and clocked with very high precision. It's more
stable than a free-running digital clock.

...I used this fact to 'cheat' in a high school physics contest where
we had to build a clock and the winner was the most stable. Ours had
a CdS cell that watched the 120Hz flicker of the lights in the room.

Monty
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Messages in current thread:
[LAU] Looking for Audio Watermarking Advice &amp; Tools, Kevin Cosgrove, (Sun Oct 23, 3:13 pm)
Re: [LAU] Looking for Audio Watermarking Advice &amp; Tools, Thomas Vecchione, (Mon Oct 24, 11:35 am)
Re: [LAU] Looking for Audio Watermarking Advice &amp; Tools, Fons Adriaensen, (Sun Oct 23, 5:38 pm)
Re: [LAU] Looking for Audio Watermarking Advice &amp; Tools, Pedro Lopez-Cabanillas, (Mon Oct 24, 5:14 am)
Re: [LAU] Looking for Audio Watermarking Advice &amp; Tools, Fons Adriaensen, (Sun Oct 23, 9:42 pm)
Re: [LAU] Looking for Audio Watermarking Advice &amp; Tools, Fons Adriaensen, (Mon Oct 24, 9:34 pm)
Re: [LAU] Looking for Audio Watermarking Advice &amp; Tools, Thomas Vecchione, (Wed Oct 26, 2:51 pm)
Re: [LAU] Looking for Audio Watermarking Advice &amp; Tools, Fons Adriaensen, (Tue Oct 25, 10:47 am)
Re: [LAU] Looking for Audio Watermarking Advice & Tools, Monty Montgomery, (Thu Oct 27, 11:40 am)
Re: [LAU] Looking for Audio Watermarking Advice &amp; Tools, Fons Adriaensen, (Thu Oct 27, 3:41 pm)
Re: [LAU] Looking for Audio Watermarking Advice &amp; Tools, Monty Montgomery, (Thu Oct 27, 3:47 pm)
Re: [LAU] Looking for Audio Watermarking Advice &amp; Tools, Fons Adriaensen, (Thu Oct 27, 4:04 pm)
Re: [LAU] Looking for Audio Watermarking Advice &amp; Tools, Monty Montgomery, (Thu Oct 27, 4:06 pm)
Re: [LAU] Looking for Audio Watermarking Advice &amp; Tools, Florian Paul Schmidt, (Tue Oct 25, 8:20 am)
Re: [LAU] Looking for Audio Watermarking Advice &amp; Tools, Fons Adriaensen, (Mon Oct 24, 9:11 am)
Re: [LAU] Looking for Audio Watermarking Advice &amp; Tools, Gabriel M. Beddingfield, (Sun Oct 23, 9:50 pm)
Re: [LAU] Looking for Audio Watermarking Advice &amp; Tools, Gabriel M. Beddingfield, (Thu Oct 27, 3:14 am)
Re: [LAU] Looking for Audio Watermarking Advice &amp; Tools, Gabriel M. Beddingfield, (Sun Oct 23, 11:41 pm)
Re: [LAU] Looking for Audio Watermarking Advice &amp; Tools, Fons Adriaensen, (Sun Oct 23, 10:41 pm)
Re: [LAU] Looking for Audio Watermarking Advice &amp; Tools, Kevin Cosgrove, (Sun Oct 23, 10:07 pm)