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I'm trying to record a podcast using two different microphones (after already realising you can't record using 2x the same mic) on my Mac High Sierra. I've tried this with multiple microphones but I always have the same issue. One mic only has "1 input", the other has "2 input" and it affects the way they record sound.

Microphone 1 (Blue Snowball) appears as having "1 in" Microphone 2 (USB Microphone 2) appears as having "2 ins"

audio midi

When I create an aggregate device using these mics, microphone 1 records audio only on the left side of the speaker. Microphone 2 records in stereo, coming out equally on both. Instead of having 4 inputs, the aggregate device has 3. All I want is to record myself and my partner on two microphones simultaneously and output in stereo so you can hear both of us in both earphones.

In video tutorials, my exact same Snowball microphone appears on their computers as having 2 inputs. Any ideas?

Stumpy x

  • Have you tried creating an aggregated device? I can't confirm if that will work with microphones. As an alternative you could run another program (Audacity) in the background record your second mic, and the first mic through another program. – Unassuming Guy Mar 30 '18 at 16:29
  • See this related question/answer: apple.stackexchange.com/q/295595/119271 – Allan Mar 30 '18 at 16:36
  • @Allan - I'm not sure that's really relevant. They already have, in effect, USB pre-amps built-into the mics. I'm sure the simplest solution, as you can't persuade an aggregate input to do it at input, would be to just sum the resulting audio file to mono - & save half the bandwidth at the same time. It would, btw, be useful to see relevant images - the current one is showing output & no aggregate device at all. – Tetsujin Mar 30 '18 at 16:45
  • @Tetsujin - I posted that as relevant since aggregating devices do "work" they're often not reliable. The only reliable way I have ever found to aggregate devices is via a mixer designed specifically for the task. That said, I do admit it's not an answer to the OP's question per se, but rather a different solution to the larger problem. – Allan Mar 30 '18 at 17:12
  • @Allan - for sure. One thing they don't appear to be able to do is the simple task of sum to mono at input - it's all just a bit hokey. Fortunately it's something I always deal with in software after that stage, but we'd need to know what the OP is recording to before we could see if that can sum on the way in; or handle stereo/mono inputs in some way that would achieve the same result. We've really only half the required info right now. – Tetsujin Mar 30 '18 at 17:27

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