讯飞语音集成与语音识别demo

iOS官方集成指南

初始化

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    ...
    [self initIFlySetting];
    ...
}

- (void)initIFlySetting
{
    // 设置sdk的log等级，log保存在下面设置的工作路径中
    [IFlySetting setLogFile:LVL_ALL];
    
    // 打开输出在console的log开关
    //[IFlySetting showLogcat:YES];
    
    // 设置sdk的工作路径
    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES);
    NSString *cachePath = [paths objectAtIndex:0];
    [IFlySetting setLogFilePath:cachePath];
    
    // 创建语音配置,appid必须要传入，仅执行一次则可
    NSString *initString = [[NSString alloc] initWithFormat:@"appid=%@", IFLY_APPID];
    // 所有服务启动前，需要确保执行createUtility
    [IFlySpeechUtility createUtility:initString];
}//

使用

#import "iflyMSC/iflyMSC.h"
#import "ISRDataHelper.h"
#import "IATConfig.h"

@interface ViewController () <UITextViewDelegate, AVAudioRecorderDelegate,
IFlySpeechRecognizerDelegate>

@property (nonatomic, strong) UIButton *btnAudio;

@property (nonatomic, strong) IFlySpeechRecognizer *iFlySpeechRecognizer;

@property (nonatomic, assign) BOOL shouldContinueRecognize;//是否应该继续识别（判断用户是否取消了识别）

@end

-(IFlySpeechRecognizer *)iFlySpeechRecognizer
{
    if(!_iFlySpeechRecognizer)
    {
        // 创建语音识别对象
        _iFlySpeechRecognizer = [IFlySpeechRecognizer sharedInstance];
        // 设置识别参数
        
        // 设置为听写模式
        [_iFlySpeechRecognizer setParameter:@"iat" forKey:[IFlySpeechConstant IFLY_DOMAIN]];
        //         asr_audio_path 是录音文件名，设置value为nil或者为空取消保存，默认保存目录在Library/cache下。
        [_iFlySpeechRecognizer setParameter:@"iat.pcm" forKey:[IFlySpeechConstant ASR_AUDIO_PATH]];
        _iFlySpeechRecognizer.delegate = self;
        
        IATConfig *instance = [IATConfig sharedInstance];
        // 设置最长录音时间
        [_iFlySpeechRecognizer setParameter:instance.speechTimeout forKey:[IFlySpeechConstant SPEECH_TIMEOUT]];
        // 设置后端点
        [_iFlySpeechRecognizer setParameter:instance.vadEos forKey:[IFlySpeechConstant VAD_EOS]];
        // 设置前端点
        [_iFlySpeechRecognizer setParameter:instance.vadBos forKey:[IFlySpeechConstant VAD_BOS]];
        // 网络等待时间
        [_iFlySpeechRecognizer setParameter:@"20000" forKey:[IFlySpeechConstant NET_TIMEOUT]];
        // 设置采样率，推荐使用16K
        [_iFlySpeechRecognizer setParameter:instance.sampleRate forKey:[IFlySpeechConstant SAMPLE_RATE]];
        // 设置语言
        [_iFlySpeechRecognizer setParameter:instance.language forKey:[IFlySpeechConstant LANGUAGE]];
        // 设置方言
        [_iFlySpeechRecognizer setParameter:instance.accent forKey:[IFlySpeechConstant ACCENT]];
        // 设置是否返回标点符号
        [_iFlySpeechRecognizer setParameter:instance.dot forKey:[IFlySpeechConstant ASR_PTT]];
    }
    return _iFlySpeechRecognizer;
}

- (void)cancelListenWrite
{
    if (_iFlySpeechRecognizer) {
        [_iFlySpeechRecognizer stopListening];
        [_iFlySpeechRecognizer cancel];
    }
}

#pragma mark - Init

- (void)dealloc
{
    [self cancelListenWrite];
}

//录音并且识别按钮点击事件
- (void)btnAudioInputEvent:(UIButton *)btn
{
    btn.selected = !btn.selected;
    
    if (btn.selected) {
        self.shouldContinueRecognize = YES;
        [self.iFlySpeechRecognizer startListening];
    }
    else
    {
        self.shouldContinueRecognize = NO;
        [self.iFlySpeechRecognizer stopListening];
    }
}

#pragma mark - IFlySpeechRecognizerDelegate
// 识别结果返回代理
/*
在识别过程中可能会多次回调此函数，你最好不要在此回调函数中进行界面的更改等操作，只需要将回调的结果保存起来。 使用results的示例如下： - (void) onResults:(NSArray *) results{ NSMutableString *result = [[NSMutableString alloc] init]; NSDictionary *dic = [results objectAtIndex:0]; for (NSString *key in dic){ [result appendFormat:"%",key];//合并结果 } }
*/
- (void)onResults:(NSArray *) results isLast:(BOOL)isLast
{
    NSMutableString *resultString = [[NSMutableString alloc] init];
    NSDictionary *dic = results[0];
    for (NSString *key in dic) {
        [resultString appendFormat:@"%@", key];
    }
    NSString * resultFromJson =  [ISRDataHelper stringFromJson:resultString];
    NSLog(@"单次听写结果：%@",  resultFromJson);
    [self.resultText appendString:resultFromJson];

    if (isLast){
        NSLog(@"听写结果：%@",  self.resultText);
    }
}

// 识别会话结束返回代理
- (void)onCompleted:(IFlySpeechError *)error
{
    NSLog(@"IFly Listen Completed:%@",error.errorDesc);
    if (self.shouldContinueRecognize) {
        [self.iFlySpeechRecognizer startListening];
    }
}

// 停止录音回调
- (void)onEndOfSpeech
{
    NSLog(@"IFly Listen End of Speech");
}

// 开始录音回调
- (void)onBeginOfSpeech
{
    NSLog(@"IFly Listen Begin of Speech");
}

// 音量回调
- (void)onVolumeChanged:(int)volume
{

}

// 会话取消回调
- (void)onCancel
{
    NSLog(@"IFly Listen Cancel");
}

//更新文本示例（把每次识别到的文字传入）
- (void)updateTextViewTextInsertedString:(NSString *)text
{
    if (text.length < 1) {
        return;
    }
    
    // 获得光标所在的位置
    NSUInteger location = _textView.selectedRange.location;
    if (location == NSNotFound ||
        location >= _textView.text.length) {
        if (_textView.text.length < 1) {
            text = [text substringFromIndex:1];
        }
        NSString *currentText = _textView.text;
        if (currentText.length < 1) {
            currentText = @"";
        }
        _textView.text = [NSString stringWithFormat:@"%@%@", currentText, text];
        [self textViewDidChange:_textView];
        
        return;
    }
    
    // 如果光标之前没有内容，去掉前面的逗号
    if ([_textView.text substringToIndex:location].length < 1) {
        if ([text hasPrefix:@"，"]) {
            if (text.length == 1) {
                text = @"";
            }
            else {
                text = [text substringFromIndex:1];
            }
        }
    }
    
    if (_textView.text.length < 1) {
        _textView.text = text;
        [self textViewDidChange:_textView];
        return;
    }
    
    if ([_textView.text substringFromIndex:location].length > 0) {
        text = [NSString stringWithFormat:@"%@", text];
    }
    
    NSString *preText = [_textView.text substringToIndex:location];
    if (preText.length < 1) {
        preText = @"";
    }
    
    NSString *lastText = [_textView.text substringFromIndex:location];
    if (lastText.length < 1) {
        lastText = @"";
    }
    
    NSString *result = [NSString stringWithFormat:@"%@%@%@", preText, text, lastText];
    
    _textView.text = result;
    [self textViewDidChange:_textView];

    // 调整光标
//    _textView.selectedRange = NSMakeRange(location + text.length + 1, 1);
}