Question

任何人都可以告诉我哪个是ios应用程序中录音的最佳录音功能......是否有任何第三方api可以很好地处理任何噪音捕捉......我试过Novocain但是没有为我工作。可能我做错了。请帮我解决这个问题。

Answer 1

我不知道，天气是最好的还是最糟糕的，但它对我有用，而且满足了我的要求。

#import "RecoderViewController.h"
#import <AVFoundation/AVFoundation.h>
#import<AudioToolbox/AudioToolbox.h>
#import "PhotoViewController.h"
#define DOCUMENTS_FOLDER [NSHomeDirectory() stringByAppendingPathComponent:@"Documents"]
@interface RecoderViewController ()
{
    NSMutableDictionary *recordSetting;
    NSString *recorderFilePath;
    AVAudioRecorder  *recorder;
    NSMutableDictionary *editedObject;
    NSTimer *timer;
    int i,j;
    NSString *str;
}
@end

@implementation RecoderViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.
    i=00;
    j=00;
    str = @"reco";
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

- (IBAction)clicktorecord:(id)sender {

    timer = [NSTimer scheduledTimerWithTimeInterval: 1.0 target:self selector:@selector(updateCountdown) userInfo:nil repeats: YES];
    self.imageRecord.hidden = false;
    self.btnStart.hidden = true;
    self.btnStop.hidden =false;
    AVAudioSession *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];
    err = nil;
    if(err){
        NSLog(@"audioSession: %@ %ld %@", [err domain], (long)[err code], [[err userInfo] description]);
        return;
    }

    recordSetting = [[NSMutableDictionary alloc] init];
    [recordSetting setValue :[NSNumber numberWithInt:kAudioFormatLinearPCM] forKey:AVFormatIDKey];
    [recordSetting setValue:[NSNumber numberWithFloat:44100.0] forKey:AVSampleRateKey];
    [recordSetting setValue:[NSNumber numberWithInt: 2] forKey:AVNumberOfChannelsKey];
    [recordSetting setValue :[NSNumber numberWithInt:16] forKey:AVLinearPCMBitDepthKey];
    [recordSetting setValue :[NSNumber numberWithBool:NO] forKey:AVLinearPCMIsBigEndianKey];
    [recordSetting setValue :[NSNumber numberWithBool:NO] forKey:AVLinearPCMIsFloatKey];

    // Create a new dated file
    NSDate *now = [NSDate dateWithTimeIntervalSinceNow:0];
    NSString *caldate = [now description];
    recorderFilePath = [NSString stringWithFormat:@"%@/%@.caf", DOCUMENTS_FOLDER, caldate];

    NSURL *url = [NSURL fileURLWithPath:recorderFilePath];
    err = nil;
    recorder = [[ AVAudioRecorder alloc] initWithURL:url settings:recordSetting error:&err];
    if(!recorder){
        NSLog(@"recorder: %@ %ld %@", [err domain], (long)[err code], [[err userInfo] description]);
        UIAlertView *alert =
        [[UIAlertView alloc] initWithTitle: @"Warning"
                                   message: [err localizedDescription]
                                  delegate: nil
                         cancelButtonTitle:@"OK"
                         otherButtonTitles:nil];
        [alert show];
}

    //prepare to record
    [recorder setDelegate:self];
    [recorder prepareToRecord];
    recorder.meteringEnabled = YES;

    BOOL audioHWAvailable = audioSession.inputIsAvailable;
    if (! audioHWAvailable) {
        UIAlertView *cantRecordAlert =
        [[UIAlertView alloc] initWithTitle: @"Warning"
                                   message: @"Audio input hardware not available"
                                  delegate: nil
                         cancelButtonTitle:@"OK"
                         otherButtonTitles:nil];
        [cantRecordAlert show];
}

    // start recording
    [recorder recordForDuration:(NSTimeInterval) 10];

}
-(void)updateCountdown{
    i++;
    if (i>60) {
        j=j+1;
        i=0;
    }
    self.lblTimer.text =[NSString stringWithFormat:@"%d : %d",j,i];
}


- (IBAction)ClicktoStop:(id)sender {

    self.btnStart.hidden =false;
    self.btnStop.hidden =true;
    self.imageRecord.hidden = true;
    [timer invalidate];

    [recorder stop];
    NSURL *url = [NSURL fileURLWithPath: recorderFilePath];
    NSError *err = nil;
    NSData *audioData = [NSData dataWithContentsOfFile:[url path] options: 0 error:&err];
    if(!audioData)
        NSLog(@"audio data: %@ %ld %@", [err domain], (long)[err code], [[err userInfo] description]);
    [editedObject setValue:[NSData dataWithContentsOfURL:url] forKey:@"editedFieldKey"];

       [self performSegueWithIdentifier:@"gotoshare" sender:self];
}

- (void)audioRecorderDidFinishRecording:(AVAudioRecorder *) aRecorder successfully:(BOOL)flag
{

    NSLog (@"audioRecorderDidFinishRecording:successfully:");


}

Answer 2

    #import <UIKit/UIKit.h>
    #import <AVFoundation/AVFoundation.h>

    @interface ViewController : UIViewController<AVAudioRecorderDelegate,AVAudioPlayerDelegate> {

        AVAudioRecorder *recorder;
        AVAudioPlayer *player;

    }



- (void)viewDidLoad {
    [super viewDidLoad];

    NSArray *pathComponents = [NSArray arrayWithObjects:
                               [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject],
                               @"youraudiofile.m4a",
                               nil];
    NSURL *outputFileURL = [NSURL fileURLWithPathComponents:pathComponents];

    //setup audio session
    AVAudioSession *session = [AVAudioSession sharedInstance];
    [session setCategory:AVAudioSessionCategoryRecord error:nil];

    //defining recorder settings

    NSMutableDictionary *recorderSettings = [[NSMutableDictionary alloc]init];

    [recorderSettings setValue:[NSNumber numberWithInt:kAudioFormatMPEG4AAC] forKey:AVFormatIDKey];
    [recorderSettings setValue:[NSNumber numberWithFloat:44100.0] forKey:AVSampleRateKey];
    [recorderSettings setValue:[NSNumber numberWithInt:2] forKey:AVNumberOfChannelsKey];

    //Initiate and preparing recorder
    recorder = [[AVAudioRecorder alloc]initWithURL:outputFileURL settings:recorderSettings error:NULL];
    recorder.delegate = self;
    recorder.meteringEnabled = YES;
    [recorder prepareToRecord];
}

-(IBAction)btnVoiceRecordClicked:(id)sender {

    if (player.playing) {
        [player stop];
    }

    if (!recorder.recording) {
        AVAudioSession *session = [AVAudioSession sharedInstance];
        [session setCategory:AVAudioSessionCategoryPlayAndRecord error:nil];
        [session setActive:YES error:nil];


        //start recording
        [recorder record];
    }

}

-(IBAction)btnStopRecordClicked:(id)sender {
    [recorder stop];
    AVAudioSession *audioSession = [AVAudioSession sharedInstance];
    [audioSession setActive:NO error:nil];
}

-(IBAction)btnPlayRecordClicked:(id)sender {

    if (!recorder.recording) {

        NSError *error = nil;
        player = [[AVAudioPlayer alloc]initWithContentsOfURL:recorder.url error:&error];
        player.delegate = self;
        [player play];

        if (error != nil) {
            NSLog(@"%@",error.localizedDescription);
        }
    }
}

任何人都可以告诉我哪个是ios应用程序中录音的最佳录音功能

2 个答案: