This is a question primarily for Marcus D. Leech (aka patchvonbraun):
In your simple_fm_rcv project, you have a "Multiply Const" block that
contains the constant 3.16k whenever stereo is enabled. I presume this
is used to amplify the level of the "L - R" signal to reach the ideal
level of separation between the channels. How did you arrive at that
constant, i.e. what is it based on? I haven't been able to find any
official spec that explains how much the L-R signal should be
amplified. Thanks in advance.
Ethan
I think part of the reason for that (hey, I wrote this thing last summer
:) ) is that you end up having to multiply a bunch of signals together
that are
individually something like -10dB down, so you have to make up for
that somewhere.
The thing really did start out simple. Then I added stereo, and tried
to improve the sound quality, and then....
--
Marcus Leech
Principal Investigator
Shirleys Bay Radio Astronomy Consortium
http://www.sbrac.org
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