科大讯飞语音识别

先到科大讯飞开放平台注册账号，创建应用并下载SDK，解压SDK压缩包，将framework拖到工程中，如下图

然后还要导入一下类库：具体如下图

创建一个工程，我们分成两部分，第一部分就是在FristViewController中，实现语音识别功能，第二部分就是在SecondViewController中，实现文字转换为语音

首先在AppDelegate.m导入头文件

// 导入头文件
#import <iflyMSC/iflyMSC.h>

然后在AppDelegate.m中实现登录科大讯飞语音平台

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    // Override point for customization after application launch.
    
    // 第二步：登录科大讯飞语音平台 【换成自己的讯飞应用id就行了】
    NSString *appID = [NSString stringWithFormat:@"appid=%@",@"5750da61"];
    [IFlySpeechUtility createUtility:appID];
    
    return YES;
}

到了第一部分的实现了，直接上代码【FirstViewController.m】

#import "FirstViewController.h"
//第一步：引入库文件
//科大讯飞语音识别功能回调方法的接口文件
#import <iflyMSC/IFlyRecognizerViewDelegate.h>
//科大讯飞语音识别功能的声音识别视图
#import <iflyMSC/IFlyRecognizerView.h>
//科大讯飞语音识别功能中定义的常量
#import <iflyMSC/IFlySpeechConstant.h>

@interface FirstViewController () <IFlyRecognizerViewDelegate>  // 遵循代理

/**  textView  */
@property (weak, nonatomic) IBOutlet UITextView *textView;

/**  语音识别对象  */
@property (nonatomic, strong) IFlyRecognizerView *iflyRecognizerView;

/**  接收相关结果的字符串  */
@property (nonatomic, strong) NSMutableString *result;

@end

@implementation FirstViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.
    
    
    //创建声音识别视图对象,初始化声音识别控件
    self.iflyRecognizerView= [[IFlyRecognizerView alloc] initWithCenter:self.view.center];
    //delegate需要设置，确保delegate回调可以正常返回
    self.iflyRecognizerView.delegate = self;
}


#pragma mark - 开始识别
- (IBAction)beginRecongnise:(id)sender {
    
    [self startListenning];
}


// 语音识别
- (void)startListenning
{
    //设置语音识别结果应用为普通文本领域
    [self.iflyRecognizerView setParameter: @"iat" forKey:[IFlySpeechConstant IFLY_DOMAIN]];
    //设置前端点检测时间为6000ms
    [self.iflyRecognizerView setParameter: @"6000" forKey:[IFlySpeechConstant VAD_BOS]];
    //设置后端点检测时间为700ms
    [self.iflyRecognizerView setParameter: @"700" forKey:[IFlySpeechConstant VAD_EOS]];
    //设置采样率为8000
    [self.iflyRecognizerView setParameter: @"8000" forKey:[IFlySpeechConstant SAMPLE_RATE]];
    //设置为返回结果中包含标点符号
    [self.iflyRecognizerView setParameter: @"1" forKey:[IFlySpeechConstant ASR_PTT]];
    //设置语音识别完成后数据的返回数据结构类型xml
    [self.iflyRecognizerView setParameter: @"plain" forKey:[IFlySpeechConstant RESULT_TYPE]];
    //设置在Documents文件夹下缓存的文件名为temp.asr
    [self.iflyRecognizerView setParameter: @"temp.asr" forKey:[IFlySpeechConstant ASR_AUDIO_PATH]];
    //设置自定义的参数
    [self.iflyRecognizerView setParameter: @"custom" forKey:[IFlySpeechConstant PARAMS]];
    
    [self.iflyRecognizerView start];
}


#pragma mark - 代理方法
// 成功
- (void)onResult:(NSArray *)resultArray isLast:(BOOL)isLast {
    
    self.result = [[NSMutableString alloc] init];
    NSDictionary *dic = [resultArray objectAtIndex:0];
    
    for (NSString *key in dic)
    {
        [self.result appendFormat:@"%@",key];
    }
    NSLog(@"%@---------",_result);
    
    // 自定义控件显示内容
    self.textView.text = [NSString stringWithFormat:@"%@%@",self.textView.text,self.result];
}


// 失败
- (void)onError:(IFlySpeechError *)error {
    
}

@end

实现第二部分【SecondViewController.m】

#import "SecondViewController.h"

//文字识别的回调方法接口
#import <iflyMSC/IFlySpeechSynthesizerDelegate.h>
//文字识别对象
#import <iflyMSC/IFlySpeechSynthesizer.h>
//科大讯飞语音框架定义的常量
#import <iflyMSC/IFlySpeechConstant.h>

@interface SecondViewController () <IFlySpeechSynthesizerDelegate>  // 遵循相关代理

/**  textView  */
@property (weak, nonatomic) IBOutlet UITextView *textView;

/**  文字识别对象  */
@property (strong, nonatomic) IFlySpeechSynthesizer *synthesizer;

@end

@implementation SecondViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    
    
    //创建文字识别对象
    self.synthesizer = [IFlySpeechSynthesizer sharedInstance];
    
    //指定文字识别对象的代理对象
    self.synthesizer.delegate = self;
    
    //设置文字识别对象的关键属性
    [self.synthesizer setParameter:@"50" forKey:[IFlySpeechConstant SPEED]];
    [self.synthesizer setParameter:@"50" forKey:[IFlySpeechConstant VOLUME]];
    [self.synthesizer setParameter:@"XIAOYAN" forKey:[IFlySpeechConstant VOICE_NAME]];
    [self.synthesizer setParameter:@"8000" forKey:[IFlySpeechConstant SAMPLE_RATE]];
    [self.synthesizer setParameter:@"temp.pcm" forKey:[IFlySpeechConstant TTS_AUDIO_PATH]];
    [self.synthesizer setParameter:@"custom" forKey:[IFlySpeechConstant PARAMS]];
}


#pragma mark - 识别相关的内容
- (IBAction)beginRecognise:(id)sender {
    
    [self.synthesizer startSpeaking:_textView.text];
}


#pragma mark - 代理方法
- (void)onCompleted:(IFlySpeechError *)error {
    
    NSLog(@"");
}

@end