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Auto-select the mux input with signal (help)?

Question asked by danarama on Jun 5, 2014
Latest reply on Jun 5, 2014 by KJBob

There maybe something on this already in this forum, if so I apologies for the repeat but I couldn't find it.

 

My application is this: I have two stereo analog inputs that run into an indexed multiplexer.  I would like to choose the input based on if there is signal on channel on of the channels. For example if stereo channel 1 is playing music and then stereo channel 2 starts playing music, the mux should switch to stereo channel 2. In fact, as long as there is signal on stereo channel 2, I would like the mux to select stereo channel 2.

 

I am trying to use an indexed multiplexer with an RMS table as the index, but I am having trouble getting this working. Any ideas on how to accomplish?

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