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Recording Transmit Audio

ChrisAC9KH
ChrisAC9KH Member ✭✭
in SmartSDR for iOS
I have a Flex-6300 on which 99% of the time I use my iPad Air 4. On my Mac mini I can start xDAX and capture the mic stream from the iPad and send it to the BlackHole virtual audio interface. Then I can start up GarageBand and record the mic stream using the BlackHole interface as the input.

My question is, when doing this am I just capturing the raw mic stream from the iPad's mic? Or is what I'm recording the actual audio that's modulated, including adjustments from the equalizer and processor (if I have it on)? The reason I ask is because even though I get reports of excellent audio using the iPad's mic, making adjustments to the EQ (or turning it off) doesn't really seem to make much difference in how the recorded audio sounds when I play it back. The only way it will record the stream is if the radio is transmitting, so am I getting raw audio or modulated audio when doing that capture?

Comments

  • Mike-VA3MW
    Mike-VA3MW Administrator, FlexRadio Employee, Community Manager, Super Elmer, Moderator admin

    You are capturing the raw mic stream.

    If you want to make audio adjustments after the EQ, CESSB part, you want to run the radio in Full Duplex by starting a 2nd slice on the same frequency with a different RX antenna (XVTR).

    This is how you do it on Windows. You can do the same thing on a MAC I think.

    https://www.youtube.com/live/p79V9Nn8l0U?si=_NQxmkpuW-WDB7RK


  • ChrisAC9KH
    ChrisAC9KH Member ✭✭
    Thanks, Mike. That's what I suspected. Yes, the iPad version of SmartSDR has FDX mode. But I didn't know it could be used to listen to your transmitted audio. I'll give that a try. Thanks!

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