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Re: [Discuss-gnuradio] trouble reexecuting a microphone audio source

From: madengr
Subject: Re: [Discuss-gnuradio] trouble reexecuting a microphone audio source
Date: Fri, 12 Dec 2014 07:51:20 -0700 (MST)

Huh, good question, I just use CTRL-C for GR programs launched from the
terminal, and had no issues with hardware.  If you set the GRC option block
to NO GUI, I don't recall if it even runs the flow; it may just generate the
top_block.py and you must manually launch from the terminal.

In general, you don't want a peak value of 1.0 into any hardware sink; need
to back it off some.

"That's all there is to create a flow graph. The last 5 lines do nothing but
start the flow graph (line 22). The try and except statements simply make
sure the flow graph (which would otherwise run infinitely) are stopped when
Ctrl+C is pressed (which triggers a KeyboardInterrupt Python exception)."


Thomas Early wrote
> Thanks much Lou. That was my problem.
> I thought I saw in a Ossmann sdr video that we were always suppose to use
> the 
> big red x. I'll have to go back and watch again.
> How do I stop a flow graph that only has an audio sink and no gui sink?
> Did I miss a link to a "intro to grc" tutorial? It took me a while to
> figure 
> out an audio sink max is 1.0.

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