Hi,
Going back a bit to the mono conversion. Would ALSA do this in
software? E.g. edit asound to something like this:
pcm.!default makemono
pcm.makemono {
type route
slave.pcm "hw:0"
ttable {
0.0 1 # in-channel 0, out-channel 0, 100% volume
1.0 1 # in-channel 1, out-channel 0, 100% volume
}
}
I honestly don't know if this mixes or just combines the channels which
can have its own horrible stereo cancellation thing going on. Something
to test if you don't have an alice converter lying around anyway.
On 2015-11-14 04:25, al davis wrote:
On Thursday 12 November 2015, Rob Landry wrote:
At WSRO(AM), I wired all the studios for stereo. It's stereo
all the way to the on-air audio processor, which gets a
mono feed from the (+) side of left channel and the (-) side
of right channel. You can do that with any active balanced
stereo output.
Active balanced outputs might be "floating" or "non-floating".
What you say is true for the "non-floating", but the "floating"
behaves more like a transformer.
With a transformer balanced output, connect the left and
right outputs in series.
OK .. but better to ground the common point between left and
right. Don't leave it floating.
If the output is "active floating" it is important to ground the
common point.
Also, you are assuming that the balanced input is really
balanced. That's not necessarily true. It is usually only a
half-truth. The common one-op-amp differential input is not
truly balanced. You might end up with an unequal sum of the
channels.
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