On 21/03/15 02:39, Robert Carroll wrote:
Hi,
I am using am audiograph terminating with the remoteIO
(kAudioUnitSubType_RemoteIO).
Volume output through headphones and on various ipads and non-iphone
devices is as expected. However, on iphones the speaker output is
extremely low.
I have seen other developer references to this issue, but no solutions.
Is there an alternate output AU or a way to access the actual hardware
output levels?
Which output device (route) are you trying to use and which audio
session category do you use?
We got caught out because the play and record category on iPhone (only)
goes to the phone receiver speaker by default, not the usual speaker.
iPad and iPod Touch don't have that speaker so they don't behave that
way. (iPhone 3GS doesn't seem to behave that way either, but newer ones
do.). And if headphones are connected, those are used instead - probably
Bluetooth, Airplay etc too.
There is an API in AVAudioSession to override it.
Hamish
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