Saturday, 17 August 2013

Soundflower audio from the iOS simulator is in mono, not stereo

Soundflower audio from the iOS simulator is in mono, not stereo

I'm using Soundflower on OS X Mountain Lion 10.8.4 to route my audio-out
to audio-in. This works great for iTunes or Spotify, but when I record
audio from the iOS simulator the audio only comes out from my right
headphone (I'm not really sure if that means its mono, or if it's dropping
a channel).
I've tested playing audio through SoundflowerBed to my headphones, and
also capturing the audio and streaming it to an iPod to be played back. In
both cases, the audio only comes out the right earphone. SoundflowerBed is
using the maximum buffer size of 2048.
Does anyone know what would cause only the iOS simulator to play mono
audio through Soundflower, or have a potential fix?
I'm also looking into other solutions besides Soundflower, but it looks
like Jack only works for applications that support it (i.e. not the iOS
simulator), and Audio Hijack Pro may only support recording to files
rather than rerouting (haven't looked into that program much). If it were
possible to route the headphone jack into the microphone jack with some
sort of cable, that would work too.
Edit: I think this question could use the tag 'Soundflower' but I don't
have enough rep on SU to craete new tags.
Edit2: I found a fork of Soundflower called WavTap. It does the same thing
as Soundflower but it also records to a WAV file. Interestingly, when I
play back the WAV file it has both channels of audio, though it still only
plays through the right headphone when streaming to the iPod touch. I'm
going to look into what WavTap is doing when recording to the WAV file --
something they're doing is fixing the problem.

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