For shipping audio around within OS X, highly recommend Rogue Amoeba’s
“Loopback.”
Does the trick extremely well.
George J Molnar
KF2T | AFA9GM
Twitter: @GJMolnar
SUPPORT HR-1301 & S-1685
http://www.arrl.org/amateur-radio-parity-act
> On May 29, 2016, at 07:25, Bill Somerville <[email protected]> wrote:
>
> On 29/05/2016 13:30, Steven Franke wrote:
>>> Have you checked the channel selection in WSJT-X? I'm not sure if the
>>> > audio input on a Mac is stereo but maybe you have only wired to one
>>> > channel.
>> Yes, I have tried Mono, Left, and Right settings. The Both setting is greyed
>> out. Occasionally, I’ll get a transient when I switch modes (from Mono to
>> Left, for example), but that’s all. I am able to “transmit” using the built
>> in speaker on the macbook - I just can’t go the other way for some reason.
>>
>> My motivation here is to try transmitting and receiving the experimental
>> 72ms jtmsk messages to make sure that I have gotten the polarity of the tone
>> assignments the right way around. My desktop machines don’t have built-in
>> microphones, unfortunately. I’ll come up with a different way to do this
>> test.
> Hi Steve,
>
> we've had no other reports of broken built-in sound devices on OS X so I
> suspect finger trouble somewhere. You seem to have covered all the
> possibilities.
>
> On Windows I use the "Stereo Mix" capability of my sound card to loop back
> audio between two instances of WSJT-X which works very well. On Mac there is
> no equivalent unless you install other software. I have just tried
> Soundflower but it has a lot of latency so is unsuitable for our needs. It
> looks like JackOSX (specifically Jack2) will do the job and has adjustable
> buffer sizes, I can't test it since my only available OS X system at the
> moment is El Capitan and JackOSX is broken on that for now. I believe it does
> work on Yosemite so you could give it a try. You can start two instances of
> WSJT-X like:
>
> open wsjtx.app --args -r instance-1
> open -n wsjtx.app --args -r instance-2
>
> Worst case you could use real audio loopback via the speakers and mic.
> 73
> Bill
> G4WJS.
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