[sdiy] [synth-diy] lock-in amplifiers

cheater00 . cheater00 at gmail.com
Sun Jan 26 18:30:42 CET 2014


On Sun, Jan 26, 2014 at 6:07 PM, Donald Tillman <don at till.com> wrote:
>
> On Jan 26, 2014, at 7:50 AM, cheater00 . <cheater00 at gmail.com> wrote:
>
>> I've recently stumbled upon the concept of a lock-in amplifier.
>> Basically, it is a way to recover an AM signal from a carrier, even if
>> the carrier is buried deep in noise.
>
> Your description is difficult to follow, but I'm pretty sure this is exactly the same technique that's used to detect the L-R multiplex signal in Stereo FM.

At what point do you get lost?

Try reading the Wikipedia and SRS articles. They must be written by
people smarter than me.

Cheers,
D.



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