I wants to record an audio in iOS (AVAudioRecorder) below code working fine
_fileName = [NSString stringWithFormat:#"Record_%#.m4a",[DateAndTimeUtil stringFromDate:[NSDate date] withFormatterString:#"HH_mm_ss_dd_MM_yyyy"]];NSArray *pathComponents = [NSArray arrayWithObjects:
[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject],
_fileName,
nil];
NSURL *outputFileURL = [NSURL fileURLWithPathComponents:pathComponents];
// Setup audio session
AVAudioSession *session = [AVAudioSession sharedInstance];
[session setCategory:AVAudioSessionCategoryPlayAndRecord error:nil];
// Define the recorder setting
NSMutableDictionary *recordSetting = [[NSMutableDictionary alloc] init];
[recordSetting setValue:[NSNumber numberWithInt:kAudioFormatMPEG4AAC] forKey:AVFormatIDKey];
[recordSetting setValue:[NSNumber numberWithFloat:44100.0] forKey:AVSampleRateKey];
[recordSetting setValue:[NSNumber numberWithInt: 2] forKey:AVNumberOfChannelsKey];
// Initiate and prepare the recorder
audioRecorder = [[AVAudioRecorder alloc] initWithURL:outputFileURL settings:recordSetting error:nil];
audioRecorder.delegate = self;
audioRecorder.meteringEnabled = YES;
[audioRecorder prepareToRecord];`
The problem is that the recorded file shows the bit rate as 44 Kbps but I want to record audio of an average bitrate of 256Kbps with a preference for AAC codec, but also compatible with the MP3 codec and the MP4 Audio codec.
Please help me out.
_fileName = [NSString stringWithFormat:#"Record_%#.mp4",[DateAndTimeUtil stringFromDate:[NSDate date] withFormatterString:#"HH_mm_ss_dd_MM_yyyy"]];
NSArray *pathComponents = [NSArray arrayWithObjects:
[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject],
_fileName,
nil];
NSURL *outputFileURL = [NSURL fileURLWithPathComponents:pathComponents];
// Setup audio session
AVAudioSession *session = [AVAudioSession sharedInstance];
[session setCategory:AVAudioSessionCategoryPlayAndRecord error:nil];
// Define the recorder setting
NSMutableDictionary *recordSetting = [[NSMutableDictionary alloc] init];
[recordSetting setValue:[NSNumber numberWithInt:kAudioFormatMPEG4AAC] forKey:AVFormatIDKey];
[recordSetting setValue:[NSNumber numberWithFloat:44100.0] forKey:AVSampleRateKey];
[recordSetting setValue:[NSNumber numberWithInt: 2] forKey:AVNumberOfChannelsKey];
[recordSetting setValue:[NSNumber numberWithInteger:AVAudioQualityHigh] forKey:AVEncoderAudioQualityKey];
[recordSetting setValue:[NSNumber numberWithInt:32] forKey:AVLinearPCMBitDepthKey];
[recordSetting setValue:[NSNumber numberWithInt:128000] forKey:AVEncoderBitRatePerChannelKey];
[recordSetting setValue:[NSNumber numberWithBool:NO] forKey:AVLinearPCMIsBigEndianKey];
[recordSetting setValue:[NSNumber numberWithBool:NO] forKey:AVLinearPCMIsFloatKey];
[recordSetting setValue:[NSNumber numberWithBool:NO] forKey:AVEncoderBitDepthHintKey];
// Initiate and prepare the recorder
audioRecorder = [[AVAudioRecorder alloc] initWithURL:outputFileURL settings:recordSetting error:nil];
audioRecorder.delegate = self;
audioRecorder.meteringEnabled = YES;
[audioRecorder prepareToRecord];
By using above code i reach towards a positive solution as it was able to record audio with bit rate info. The audio has almost 256Kbps bit rate.
Related
I am Using AVAudioRecorder for Recording human voice and after that need to change pitch for applying some effects.For this i am using AVAudioPlayerNode.But it also records background noise .I searched alot but I couldn't found a perfect solutions.below is the code how I am recording that audio.I found some where that we need to do DSP(Digital Signature process) for this.
recordSetting = [[NSMutableDictionary alloc] init];
[recordSetting setValue :[NSNumber numberWithInt:kAudioFormatLinearPCM] forKey:AVFormatIDKey];
[recordSetting setValue:[NSNumber numberWithFloat:44100.0] forKey:AVSampleRateKey];
[recordSetting setValue:[NSNumber numberWithInt: 1] forKey:AVNumberOfChannelsKey];
[recordSetting setValue:[NSNumber numberWithInt:16] forKey:AVLinearPCMBitDepthKey];
[recordSetting setValue:[NSNumber numberWithBool:NO] forKey:AVLinearPCMIsBigEndianKey];
[recordSetting setValue:[NSNumber numberWithBool:NO] forKey:AVLinearPCMIsFloatKey];
[recordSetting setValue:[NSNumber numberWithInt: AVAudioQualityHigh]forKey:AVEncoderAudioQualityKey];
NSArray* documentPaths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString* fullFilePath = [[documentPaths objectAtIndex:0] stringByAppendingPathComponent: #"in.caf"];
inUrl = [NSURL fileURLWithPath:fullFilePath];
voiceRecorder = [[ AVAudioRecorder alloc] initWithURL: inUrl settings:recordSetting error:&error];
//[audioRecorder setMeteringEnabled:YES];
[voiceRecorder setDelegate: self];
[voiceRecorder prepareToRecord];
can someone please help me in removing background noises so that I can get clear recording.
I'm using AVAudioRecorder to record a audio file. The code I'm using works perfectly fine in iOS 8 and below but since the latest update of iOS 9 the recording seems to have stopped working.
I tried logging the properties of AVAudioRecorder object and even after calling the "record" function in AVAudioRecorder the isRecording is showing as NO and when the "stop" function is called i get the call back in the delegate
- (void)audioRecorderDidFinishRecording:(AVAudioRecorder *)recorder successfully:(BOOL)flag; with success flag as NO
audioSession = [AVAudioSession sharedInstance];
NSError *err = nil;
[audioSession setCategory :AVAudioSessionCategoryPlayAndRecord error:&err];
if(err){
NSLog(#"audioSession: %# %ld %#", [err domain], (long)[err code], [[err userInfo] description]);
return;
}
[audioSession setActive:YES error:&err];
recordSetting = [[NSMutableDictionary alloc] init];
[recordSetting setValue:[NSNumber numberWithInt:kAudioFormatMPEG4AAC] forKey:AVFormatIDKey];
[recordSetting setValue:[NSNumber numberWithFloat:16000.0] forKey:AVSampleRateKey];
[recordSetting setValue:[NSNumber numberWithInt: 1] forKey:AVNumberOfChannelsKey];
[recordSetting setValue :[NSNumber numberWithInt:16] forKey:AVEncoderBitRateKey];
[recordSetting setValue :[NSNumber numberWithInt:8] forKey:AVLinearPCMBitDepthKey];
[recordSetting setValue :[NSNumber numberWithBool:NO] forKey:AVLinearPCMIsBigEndianKey];
[recordSetting setValue :[NSNumber numberWithBool:NO] forKey:AVLinearPCMIsFloatKey];
[recordSetting setValue :[NSNumber numberWithInt:AVAudioQualityMin] forKey:AVEncoderAudioQualityKey];
recorderFilePath = [NSString stringWithFormat:#"%#/%#.m4a", DOCUMENTS_FOLDER,#"sample"];
NSLog(#"RecorderFilePath : %#",recorderFilePath);
NSURL *url = [NSURL fileURLWithPath:recorderFilePath];
err = nil;
recorder = [[ AVAudioRecorder alloc] initWithURL:url settings:recordSetting error:&err];
//prepare to record
[recorder setDelegate:self];
[recorder prepareToRecord];
recorder.meteringEnabled = YES;
BOOL audioHWAvailable = audioSession.inputAvailable;
[recorder record];
Please advise if i'm doing something wrong in the code.
Try this:
AVAudioSession *session = [AVAudioSession sharedInstance];
[session setCategory:AVAudioSessionCategoryRecord error:nil];
// Define the recorder setting
NSMutableDictionary *recordSetting = [[NSMutableDictionary alloc] initWithObjectsAndKeys:[NSNumber numberWithInt:kAudioFormatMPEG4AAC], AVFormatIDKey, [NSNumber numberWithFloat:44100.0], AVSampleRateKey, [NSNumber numberWithInt: 2], AVNumberOfChannelsKey,nil];
// [recordSetting setValue :[NSNumber numberWithInt:16] forKey:AVLinearPCMBitDepthKey];
// Initiate and prepare the recorder
if (recorderHelium)
{
recorderHelium = nil;
}
recorderHelium = [[AVAudioRecorder alloc] initWithURL:[NSURL fileURLWithPath:recordedAudioFilePath] settings:recordSetting error:nil];
recorderHelium.delegate = self;
recorderHelium.meteringEnabled = YES;
[recorderHelium prepareToRecord];
[recorderHelium record];
And also import and include these files:
#import <AudioToolbox/AudioServices.h>
#include <AudioToolbox/AudioToolbox.h>
I have an app which makes recordings using AVAudioRecorder. Its works and saves the audio files just fine. But when I rebuild the app, the audio files are deleted.
Is that normal? I would have thought so, but just wanted to make sure. I can't find anything about this online. Does Xcode delete any new files made by the app, each time a new build is made?
UPDATE
The code I am using to record the audio is as follows:
// Setup audio recorder to save file.
AVAudioSession *audioSession = [AVAudioSession sharedInstance];
[audioSession setCategory:AVAudioSessionCategoryPlayAndRecord error:nil];
[audioSession setActive:YES error:nil];
[audio_recorder setDelegate:self];
// Set the recording options such as quality.
NSMutableDictionary *settings = [NSMutableDictionary dictionary];
[settings setValue:[NSNumber numberWithInt:kAudioFormatLinearPCM] forKey:AVFormatIDKey];
[settings setValue:[NSNumber numberWithFloat:8000.0] forKey:AVSampleRateKey];
[settings setValue:[NSNumber numberWithInt:1] forKey:AVNumberOfChannelsKey];
[settings setValue:[NSNumber numberWithInt:16] forKey:AVLinearPCMBitDepthKey];
[settings setValue:[NSNumber numberWithBool:NO] forKey:AVLinearPCMIsBigEndianKey];
[settings setValue:[NSNumber numberWithBool:NO] forKey:AVLinearPCMIsFloatKey];
[settings setValue:[NSNumber numberWithInt:AVAudioQualityMax] forKey:AVEncoderAudioQualityKey];
NSArray *searchPaths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentPath_ = [searchPaths objectAtIndex:0];
NSString *pathToSave = [documentPath_ stringByAppendingPathComponent:currentDate];
// Construct the audio file save URL.
NSURL *url = [NSURL fileURLWithPath:pathToSave];
// Setup the audio recorder.
NSError *error;
audio_recorder = [[AVAudioRecorder alloc] initWithURL:url settings:settings error:&error];
if (error == nil) {
// Now begin the recording.
[audio_recorder prepareToRecord];
[audio_recorder record];
}
Thanks for your time, Dan.
I have record and playback routines. see code below. The only problem is that the playback on my device is very low. The volume is okay on the simulator and I have the device volume all of the way up. Is there something else I need to set.
Here's the record code:
NSArray *pathComponents = [NSArray arrayWithObjects:
[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject],
#"MyAudioMemo.m4a",
nil];
NSURL *outputFileURL = [NSURL fileURLWithPathComponents:pathComponents];
// Setup audio session
AVAudioSession *session = [AVAudioSession sharedInstance];
[session setCategory:AVAudioSessionCategoryPlayAndRecord error:nil];
// Define the recorder setting
NSMutableDictionary *recordSetting = [[NSMutableDictionary alloc] init];
[recordSetting setValue:[NSNumber numberWithInt:kAudioFormatMPEG4AAC] forKey:AVFormatIDKey];
[recordSetting setValue:[NSNumber numberWithFloat:44100.0] forKey:AVSampleRateKey];
[recordSetting setValue:[NSNumber numberWithInt: 2] forKey:AVNumberOfChannelsKey];
// Initiate and prepare the recorder
recorder = [[AVAudioRecorder alloc] initWithURL:outputFileURL settings:recordSetting error:NULL];
recorder.delegate = self;
recorder.meteringEnabled = YES;
[recorder prepareToRecord];
[recorder record];
And the playback:
player = [[AVAudioPlayer alloc] initWithContentsOfURL:recorder.url error:nil];
[player setDelegate:self];
player.meteringEnabled = YES;
player.volume = 1.0;
[player play];
Make your speaker default as there is some time problem audio go througg other routes
[session setCategory:AVAudioSessionCategoryPlayAndRecord withOptions:AVAudioSessionCategoryOptionDefaultToSpeaker error:&sessionError];
Try AVAudioSessionCategoryAmbient mode it has high volume when you play your sound
[session setCategory:AVAudioSessionCategoryAmbient error:&setCategoryError];
NSArray *pathComponents = [NSArray arrayWithObjects:
[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject],
#"MyAudioMemo.m4a",
nil];
NSURL *outputFileURL = [NSURL fileURLWithPathComponents:pathComponents];
// Setup audio session
AVAudioSession *session = [AVAudioSession sharedInstance];
[session setCategory:AVAudioSessionCategoryPlayAndRecord error:nil];
// Define the recorder setting
NSMutableDictionary *recordSetting = [[NSMutableDictionary alloc] init];
[recordSetting setValue:[NSNumber numberWithInt:kAudioFormatMPEG4AAC] forKey:AVFormatIDKey];
[recordSetting setValue:[NSNumber numberWithFloat:44100.0] forKey:AVSampleRateKey];
[recordSetting setValue:[NSNumber numberWithInt: 2] forKey:AVNumberOfChannelsKey];
// Initiate and prepare the recorder
recorder = [[AVAudioRecorder alloc] initWithURL:outputFileURL settings:recordSetting error:NULL];
recorder.delegate = self;
recorder.meteringEnabled = YES;
[recorder prepareToRecord];
[recorder prepareToRecord];
recorder.meteringEnabled = YES;
//Start the actual Recording
[recorder record];
[recorder updateMeters];
level = [recorder peakPowerForChannel:0];
NSLog(#"%f",level);
i have used this code in viewDidload() method to record a sound sound get in level.
i want to call the deleget method when device get the sound.
-(void)audioRecorderDidFinishRecording:(AVAudioRecorder *)recorder successfully:(BOOL)flag
{
NSLog(#"Level is %f",level);
}
this method not called.
i am setting recorder delegate in .h file but not called this method why this is happening.
help me to do this.
Thanks in advance.
Are you actually storing the AVAudioRecorder instance somewhere? If you are not then it is likely deallocated by the time the above code finishes.
Try this
-(void)initialiceAudio{
NSArray *pathComponents = [NSArray arrayWithObjects:
[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject],
#"MyAudioMemo.m4a",
nil];
NSURL *outputFileURL = [NSURL fileURLWithPathComponents:pathComponents];
AVAudioSession *session = [AVAudioSession sharedInstance];
[session setCategory:AVAudioSessionCategoryPlayAndRecord error:nil];
// Define the recorder setting
NSMutableDictionary *recordSetting = [[NSMutableDictionary alloc] init];
[recordSetting setValue:[NSNumber numberWithInt:kAudioFormatMPEG4AAC] forKey:AVFormatIDKey];
[recordSetting setValue:[NSNumber numberWithFloat:5000.0] forKey:AVSampleRateKey];
[recordSetting setValue:[NSNumber numberWithInt: 2] forKey:AVNumberOfChannelsKey];
// Initiate and prepare the recorder
recorder = [[AVAudioRecorder alloc] initWithURL:outputFileURL settings:recordSetting error:NULL];
recorder.delegate = self;
recorder.meteringEnabled = YES;
[player setVolume: 1.0];
[recorder prepareToRecord];
}
-(IBAction)record:(id)sender {
if (!recorder.recording) {
AVAudioSession *session = [AVAudioSession sharedInstance];
[session setActive:YES error:nil];
recordBtn.selected=YES;
tabBtn.selected = YES;
tabBtn.userInteractionEnabled = NO;
// Start recording
[recorder record];
} else {
}
}
-(void) audioRecorderDidFinishRecording:(AVAudioRecorder *)avrecorder successfully:(BOOL)flag{
recorder = nil;
player = nil;
spinnerView = nil;
UploadAudioViewController *upload = [[UploadAudioViewController alloc]initWithNibName:#"UploadAudioViewController" bundle:nil];
NSLog(#"recorder url----%#",recorderurl);
upload.audioURL = recorderurl;
[self.navigationController pushViewController:upload animated:YES];
}
and make sure - you used AVAudioRecorderDelegate and AVAudioPlayerDelegate