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Scott Dorsey Scott Dorsey is offline
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Default Neil Youn's Pono music

In article , Mike Rivers wrote:
On 9/12/2014 9:19 AM, Mike Rivers wrote:
Oy! The console owner wasn't hearing 50 kHz, he was hearing 50 kHz
mixing with other frequencies and generating frequencies coming out that
didn't go in. It was broken. It was fixed.


OK, I probably stand corrected on this (old memory, you know). Could
have been the result of an unterminated transformer ringing and not a
steady 50 kHz whistle coming through the channel. Still, the problem
wasn't that the producer was hearing 50 kHz.


Right, and that's why in the analogue world the behaviour of systems above
20 KHz is important.

In the digital world we can eliminate signals above 20 KHz which greatly
reduces the number of issues that we have to contend with.
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis."