there a view to get mic volume in ios 7?
NSURL *url = [NSURL fileURLWithPath:@"/dev/null"];
NSDictionary *settings = [NSDictionary dictionaryWithObjectsAndKeys:
[NSNumber numberWithFloat: 44100.0], AVSampleRateKey,
[NSNumber numberWithInt: kAudioFormatAppleLossless], AVFormatIDKey,
[NSNumber numberWithInt: 0], AVNumberOfChannelsKey,
[NSNumber numberWithInt: AVAudioQualityMax], AVEncoderAudioQualityKey,
nil];
NSError *error;
recorder = [[AVAudioRecorder alloc] initWithURL:url settings:settings error:&error];
if (recorder) {
//recorder.delegate = self;
[recorder prepareToRecord];
recorder.meteringEnabled = TRUE;
[recorder record];
levelTimer = [NSTimer scheduledTimerWithTimeInterval: 0.1 target: self selector: @selector(levelTimerCallback:) userInfo: nil repeats: YES];
} else {
NSLog(@"");// mic error message
}
- (void)levelTimerCallback:(NSTimer *)timer {
[recorder updateMeters];
const double ALPHA = 0.05;
double peakPowerForChannel = pow(10, (ALPHA * [recorder averagePowerForChannel:0]));
db = 20* log10(peakPowerForChannel);
db += taraturaDb;
db = db < 0 ? 0 : db;
lowPassResults = ALPHA * peakPowerForChannel + (1.0 - ALPHA) * lowPassResults;
if (lowPassResults < 0.95) {
NSLog(@"%f",db);
}
this that worked in iOS6 doesn't work in iOS 7
thanks
Put these lines before you initialize AVAudioRecorder:
AVAudioSession *audioSession = [AVAudioSession sharedInstance];
[audioSession setActive:YES error:nil];
[[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryRecord error:nil];
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