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Re: [Discuss-gnuradio] 3.16k constant in simple_fm_rcv


From: Marcus D. Leech
Subject: Re: [Discuss-gnuradio] 3.16k constant in simple_fm_rcv
Date: Mon, 01 Jul 2013 22:33:42 -0400
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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
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As I recall, I just kind of arrived at it empirically....


-- 
Marcus Leech
Principal Investigator
Shirleys Bay Radio Astronomy Consortium
http://www.sbrac.org

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