iOS開發之語音功能實現

標籤：

 

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {

    //建立語音配置,appid必須要傳入，僅執行一次則可

    NSString *initString = [[NSString alloc] initWithFormat:@"appid=570f3db3"];

    //所有服務啟動前，需要確保執行createUtility

    [IFlySpeechUtility createUtility:initString];

    return YES;

}

製作錄音檔案，使用apple原生API架構。需要添加標頭檔AVFoundation架構，在程式第一次啟用時候會請求是否開啟此項功能。另使用科大API只能免費使用線上SDK，調用離線SDK只能用於3個iOS裝置使用35天。離線購買價格很貴。

#import "iflyMSC/IFlyMSC.h"

#import "iflyMSC/IFlySpeechConstant.h"

#import "iflyMSC/IFlySpeechRecognizerDelegate.h"

#import "iflyMSC/IFlySpeechRecognizer.h"

@import AVFoundation;

<AVAudioRecorderDelegate>使用代理

 

@property (nonatomic,strong)IFlySpeechRecognizer *iFlySpeechRecognizer;

@property (nonatomic,strong)AVAudioRecorder *recorder;

@property (nonatomic,strong)AVAudioPlayer *player;

@property (nonatomic,strong)NSTimer *timer;

@property (nonatomic,strong)NSURL *url;

@property (nonatomic,strong)NSMutableDictionary *dict;

@property (nonatomic,strong)UIProgressView *gress;

@property (nonatomic,strong)NSMutableString *text;

 @property (weak, nonatomic) IBOutlet UITextField *textField;

 

 

 AVAudioSession *session = [AVAudioSession sharedInstance];

//單例模式，設定為錄音並播放

    [session setCategory:AVAudioSessionCategoryPlayAndRecord error:nil];

    [session setActive:YES error:nil];

NSString *str = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES)[0];

    self.url = [NSURL fileURLWithPath:[str stringByAppendingPathComponent:@"myFirstRecord.caf"]];

    設定檔案的儲存路徑

    self.gress = [[UIProgressView alloc]initWithProgressViewStyle:UIProgressViewStyleDefault];

    self.gress.progress = 0;設定進度條

    self.gress.frame = CGRectMake(90, 200, 200, 2);

    [self.view addSubview:self.gress];

 

  self.dict = [NSMutableDictionary dictionary];

    [self.dict setObject:@(kAudioFormatLinearPCM) forKey:AVFormatIDKey];

    [self.dict setObject:@10000 forKey:AVSampleRateKey];

    [self.dict setObject:@1 forKey:AVNumberOfChannelsKey];

    [self.dict setObject:@8 forKey:AVLinearPCMBitDepthKey];

    [self.dict setObject:@(YES) forKey:AVLinearPCMIsFloatKey];

 

 if (!_recorder) {

        _recorder = [[AVAudioRecorder alloc]initWithURL:self.url settings:self.dict error:nil];

        _recorder.delegate = self;

        _recorder.meteringEnabled = YES;

    }

    

    if (!_player) {

        _player = [[AVAudioPlayer alloc]initWithContentsOfURL:self.url error:nil];

    }

    

    [self start];

 

- (void)start{

    _iFlySpeechRecognizer = [IFlySpeechRecognizer sharedInstance]; //設定聽寫模式

    _iFlySpeechRecognizer.delegate = self;

    //2.設定聽寫參數

    [_iFlySpeechRecognizer setParameter: @"iat" forKey: [IFlySpeechConstant IFLY_DOMAIN]];

    //asr_audio_path是錄音檔案名稱,設定value為nil或者為空白取消儲存,預設儲存目錄在 Library/cache下。

    [_iFlySpeechRecognizer setParameter:@"asrview.pcm" forKey:[IFlySpeechConstant ASR_AUDIO_PATH]];

    //3.啟動識別服務 [_iFlySpeechRecognizer start]; 

}

- (NSTimer *)timer{

   

    if (!_timer) {

        _timer = [NSTimer scheduledTimerWithTimeInterval:1/20.0 target:self selector:@selector(showProgress:) userInfo:nil repeats:YES];

         NSLog(@"nstime");

    }

    return _timer;

}

- (void)showProgress:(NSTimer*)t{

    [self.recorder updateMeters];

    float power = [self.recorder averagePowerForChannel:0];//取得第一個通道的音頻，注意音頻強度範圍時-160到0

    self.gress.progress = (power+160)/160.0;

}

 

- (IBAction)recording:(id)sender {

        if (![self.recorder isRecording]) {

        [self.recorder record];

        self.timer.fireDate = [NSDate distantPast];

    }

     NSLog(@"錄音開始!");

}

- (IBAction)pause:(id)sender {

    if (![self.recorder isRecording]) {

        [self.recorder pause];

        self.timer.fireDate = [NSDate distantFuture];

    }else{

    

        [self.recorder record];

        self.timer.fireDate = [NSDate distantPast];

    }

     NSLog(@"暫停切換!");

}

- (IBAction)stop:(id)sender {

    [self.recorder stop];

     NSLog(@"錄音結束!");

    self.timer.fireDate = [NSDate distantFuture];

    self.timer = nil;

    self.gress.progress = 0;

}

 

- (IBAction)iflyClick:(id)sender {

    NSLog(@"iflyClick");按下button的時候調用方法TouchDown

    _text = [[NSMutableString alloc]init];

    [_iFlySpeechRecognizer startListening];

    

}

- (IBAction)iflyClickstop:(id)sender {

     NSLog(@"iflyClickstop");離開button後調用的方法，無論是在按鈕上離開還是在按鈕外離開都執行。TouchUpInside&TouchUpOutside

    [_iFlySpeechRecognizer stopListening];

}

 

#pragma  - mark -   AVAudioRecordDelegate

 

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

    AVAudioSession *session = [AVAudioSession sharedInstance];

    [session setCategory:AVAudioSessionCategoryPlayback error:nil]; //開啟擴音器

    [session setActive:YES error:nil];

    if(![self.player isPlaying]){

        [self.player play];

    }

     NSLog(@"錄音完成!");

}

 

#pragma  - mark -   IFlySpeechRecognizerDelegate

- (void) onError:(IFlySpeechError *) errorCode{

     NSLog(@"onError-----------------%@",errorCode);

 

}

 

- (void) onResults:(NSArray *) results isLast:(BOOL)isLast{

     NSLog(@"onResults-----------------%@",results);

    NSMutableString *result = [[NSMutableString alloc] init];

         NSDictionary *dic = [results objectAtIndex:0];

    for (NSString *key in dic){

               [result appendFormat:@"%@",key];//合并結果

 

        }

       NSLog(@"result-------%@",result);

    NSMutableArray *strArr = [[result componentsSeparatedByString:@"\"}]}"] mutableCopy];

    [strArr removeLastObject];

    for (NSString *str in strArr) {

      [_text appendString:[[str componentsSeparatedByString:@"\""]lastObject]];

    }

     NSLog(@"_text-------%@",_text);

    dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{

        self.textField.text = _text;

    });

    

}

 

 

-(void)viewWillDisappear:(BOOL)animated

{

    [_iFlySpeechRecognizer cancel];

    _iFlySpeechRecognizer.delegate = nil;

     //設定回非語義識別

    [_iFlySpeechRecognizer destroy];

   [super viewWillDisappear:animated];

 }

iOS開發之語音功能實現