In message <[EMAIL PROTECTED]>, Mike Castle writes:
> On Fri, Sep 21, 2001 at 05:17:27PM -0600, Eric Jorgensen wrote:
> > I don't know enough about stereo decoding, is it possible to decode
> > stereo with just an array of capacitors?
>
> Quite. I believe FM stereo has been around for longer than ICs.
>
> Since stereo is merely the encodinf of L+R and L-R (or vice versa, I always
> forget), it's quite possible to use analog to to (L+R)+(L-R)=2L and
> (L+R)-(L-R)=2R to get the output.
Analog yes, but you still need to be able get the diff signal from the
38 khz carrier and that I think requires some active components.
A couple of transistors or as I beleive in the very first FM-stereo
recivers, a tube.
NICAM is a digital system. 14 bit resolution with 10 bits sent at a time.
Either the msb or lsb depending on signal level. This of course requires
a rather sofisticated decoder circuitry.
/H�kan
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