Question

我想在录制音频时手动触发播放一些警报声，我希望录制警报声。因此，在录制音频时，我希望在扬声器中大声播放警报而不是接收器。

我使用AVAudioRecorder录制音频并使用AVAudioPlayer播放提示音。录像机代码

AVAudioSession *session = [AVAudioSession sharedInstance];

NSError *sessionError;
[session setCategory:AVAudioSessionCategoryRecord error:&sessionError];

if(session == nil)
    NSLog(@"Error creating session: %@", [sessionError description]);
else
    [session setActive:YES error:nil];
recorder = [[AVAudioRecorder alloc] initWithURL:_recordedFile settings:recordSettings error:nil];
[recorder prepareToRecord];
[recorder record];

播放器代码

    AVAudioSession *session = [AVAudioSession sharedInstance];
// session.outputDataSources
NSError *sessionError;
[session setCategory:AVAudioSessionCategoryPlayAndRecord error:&sessionError];

// use the louder speaker
UInt32 audioRouteOverride = kAudioSessionOverrideAudioRoute_Speaker;
AudioSessionSetProperty (kAudioSessionProperty_OverrideCategoryDefaultToSpeaker,
                         sizeof (audioRouteOverride),&audioRouteOverride);

if(session == nil)
    NSLog(@"Error creating session: %@", [sessionError description]);
else
    [session setActive:YES error:nil];

NSError *error;
player = [[AVAudioPlayer alloc] initWithContentsOfURL:self.filePath error:&error];
player.delegate =self;
player.volume = 1.0;
player.numberOfLoops = 0;
self.timeDuration = player.duration;

如果我停止录制，并手动触发播放提示，它将以扬声器播放。但在录制过程中，当我手动触发播放提醒时，没有任何反应。这里有什么不对吗？或者录音时是否可以在扬声器中播放声音？

Answer 1

只需更改类别，如下所示

[session setCategory:AVAudioSessionCategoryPlayAndRecord error:&err];

iOS录制时如何在扬声器中播放警报声

1 个答案: