audiograph remoteIO low volume with speaker on iphone
audiograph remoteIO low volume with speaker on iphone
- Subject: audiograph remoteIO low volume with speaker on iphone
- From: Robert Carroll <email@hidden>
- Date: Sat, 21 Mar 2015 13:28:11 -0400
| Thanks. That seems to be exactly what I was looking for.
I am using the ‘play and record’ category. This is an app where the audio quality is important. I would expect most users to be using headphones, but it should function properly even through the main speaker. I didn’t realize that the play and record category would route to the phone speaker by default.
regards,
rob
Message: 5Date: Sat, 21 Mar 2015 17:41:30 +1100From: Hamish Moffatt <email@hidden>To: email@hiddenSubject: Re: audiograph remoteIO low volume with speaker on iphoneMessage-ID: <email@hidden" style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""> email@hidden>Content-Type: text/plain; charset="utf-8"; Format="flowed"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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