How to get AVAudioPlayer output to the speaker

Question

I\'m recording audio with AVAudioRecorder as seen in How do I record audio on iPhone with AVAudioRecorder?

I then use AVAudioPlayer to play back the recording. Howev

Answer 1

Answer For Swift 4.0

func SetSessionPlayerOn()
{
    do {
        try AVAudioSession.sharedInstance().setCategory(AVAudioSessionCategoryPlayAndRecord)
    } catch _ {
    }
    do {
        try AVAudioSession.sharedInstance().setActive(true)
    } catch _ {
    }
    do {
        try AVAudioSession.sharedInstance().overrideOutputAudioPort(AVAudioSessionPortOverride.speaker)
    } catch _ {
    }
}
func SetSessionPlayerOff()
{
    do {
        try AVAudioSession.sharedInstance().setActive(false)
    } catch _ {
    }
}

Answer 2

this is the key line to output auido in speaker instead in microphone. Note it should be set while recording

try AVAudioSession.sharedInstance().overrideOutputAudioPort(AVAudioSessionPortOverride.speaker)

Below is complete function to setup recording

private func setupRecorder() {

    if isAudioRecordingGranted {
        let session = AVAudioSession.sharedInstance()
        do {

            if #available(iOS 10.0, *) {
                try! session.setCategory(.playAndRecord, mode:.spokenAudio)
            }
            else {
                // Workaround until https://forums.swift.org/t/using-methods-marked-unavailable-in-swift-4-2/14949 isn't fixed
               session.perform(NSSelectorFromString("setCategory:error:"), with: AVAudioSession.Category.playback)
            }
            try session.setActive(true)
            try session.overrideOutputAudioPort(AVAudioSession.PortOverride.speaker)

            let settings = [
                AVFormatIDKey: Int(kAudioFormatMPEG4AAC),
                AVSampleRateKey: 44100,
                AVNumberOfChannelsKey: 2,
                AVEncoderAudioQualityKey:AVAudioQuality.high.rawValue
            ]
            audioRecorder = try AVAudioRecorder(url: fileUrl(), settings: settings)
            audioRecorder.delegate = self
            audioRecorder.isMeteringEnabled = true
            audioRecorder.prepareToRecord()
            self.recorderState = .Ready
        }
        catch let error {
            recorderState = .error(error)
        }
    }
    else {
        recorderState = .Failed("Don't have access to use your microphone.")
    }
}

Answer 3

Swift 3

Before recording the sound I set:

AVAudioSession.sharedInstance().setCategory(AVAudioSessionCategoryPlayAndRecord)

and before playback I set:

AVAudioSession.sharedInstance().setCategory(AVAudioSessionCategoryAmbient)

Objective C

before recording:

[[AVAudioSession sharedInstance] setCategory: AVAudioSessionCategoryRecord error:nil];

before playback:

[[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryAmbient error:nil];

Answer 4

From http://www.iphonedevsdk.com/forum/iphone-sdk-development-advanced-discussion/12890-audiosessionsetproperty-problem-playing-sound-listening-mic.html --

UInt32 sessionCategory = kAudioSessionCategory_MediaPlayback;
AudioSessionSetProperty(kAudioSessionProperty_AudioCategory, sizeof(sessionCategory), &sessionCategory);    
UInt32 audioRouteOverride = kAudioSessionOverrideAudioRoute_Speaker;
AudioSessionSetProperty (kAudioSessionProperty_OverrideAudioRoute,sizeof (audioRouteOverride),&audioRouteOverride);

Answer 5

This works great for me in Swift2

let session = AVAudioSession.sharedInstance()
try! session.setCategory(AVAudioSessionCategoryPlayAndRecord, withOptions: AVAudioSessionCategoryOptions.DefaultToSpeaker)

Answer 6

I realize this question is fairly old but when I was struggling with the same problem I found a simple solution that hopefully will help anyone else looking to use the louder media speakers as opposed to the receiver speakers. The method I used was setting up the audio session with the DefaultToSpeaker option in AVAudioSessionCategoryOptions:

In Swift (assuming your audio session is named session) -

session.setCategory(AVAudioSessionCategoryPlayAndRecord, withOptions:AVAudioSessionCategoryOptions.DefaultToSpeaker, error: nil)

In Obj-C -

[[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryPlayAndRecord withOptions:AVAudioSessionCategoryOptionDefaultToSpeaker error: nil];