iphone之使用讯飞语音sdk实现语音识别功能

1、首先下载讯飞sdk及文档：http://open.voicecloud.cn/

2、学习里面的demo简单实现了一个小的语音识别功能

先做一个简单demo，看看识别效果。注：语音识别必须联网。

所有接口必需在联网状态下才能正常使用。

效果图:

#import <UIKit/UIKit.h>

#import "iflyMSC/IFlySpeechRecognizer.h"

#import "iflyMSC/IFlyDataUploader.h"

@protocol SpeechAlertViewDelegate <NSObject>

@optional

- (void)getResultText:(NSString *)text;

@end

@interface SpeechAlertView : UIAlertView<IFlySpeechRecognizerDelegate>

{

    UIImageView *speechImage;//声音图片

    IFlySpeechRecognizer * _iFlySpeechRecognizer;//语音识别对象

    UIView *backgroundView;

}

@property (assign, nonatomic)id<SpeechAlertViewDelegate> speechDelegate;

@end

#import "SpeechAlertView.h"

#define APPID @"51de5743"

#define TIMEOUT @"20000"

// timeout      连接超时的时间，以ms为单位，毫秒，符号ms ，1000 毫秒 = 1秒，30000=30秒

//timeout:网络超时时间,单位:ms,默认为20000,范围0-30000

@implementation SpeechAlertView

-(id)init

{

    self = [super initWithFrame:CGRectMake(0, 0, 300, 220)];

    if (self) {

        // Initialization code

    }

    return self;

}

- (id)initWithFrame:(CGRect)frame

{

    self = [super initWithFrame:frame];

    if (self) {

        // Initialization code

    }

    return self;

}

//uialertview的大小位置

-(void)setFrame:(CGRect)frame{

    //重新设置弹出框的大小和位置

    UIWindow *window =  [UIApplication sharedApplication].keyWindow;

    [super setFrame:CGRectMake((window.frame.size.width-self.frame.size.width)/2, (window.frame.size.height-self.frame.size.height)/2, self.frame.size.width, self.frame.size.height)];

}

//重新写界面内容

- (void) layoutSubviews {

    //屏蔽系统的ImageView 和 UIButton

    for (UIView *v in [self subviews]) {

        if ([v class] == [UIImageView class]){

            [v setHidden:YES];

        }

        if ([v isKindOfClass:[UIButton class]] ||

            [v isKindOfClass:NSClassFromString(@"UIThreePartButton")]) {

            [v setHidden:YES];

        }

    }

    //添加背影图

    UIView *backView = [[UIView alloc]initWithFrame:CGRectMake(0, 0, self.frame.size.width, self.frame.size.height)];

    backView.backgroundColor = [UIColor colorWithRed:66/255.0 green:68/255.0 blue:70/255.0 alpha:1.0];

    [self addSubview:backView];

    //添加标题

    UILabel *titleLabel = [[UILabel alloc]initWithFrame:CGRectMake(10, 0, backView.frame.size.width-20, 30)];

    titleLabel.backgroundColor = [UIColor clearColor];

    titleLabel.text = @"语音识别";

    titleLabel.font = [UIFont systemFontOfSize:16];

    titleLabel.textColor = [UIColor colorWithRed:218.0/255.0 green:217.0/255.0 blue:217.0/255.0 alpha:1];

    [backView addSubview:titleLabel];

    //添加关闭按钮huati_close

    UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];

    [button setImage:[UIImage imageNamed:@"alert_close.png"] forState:UIControlStateNormal];

    [backView addSubview:button];

    button.tag = 1;

    button.frame = CGRectMake(backView.frame.size.width-25, 5, 20, 20);

    [button addTarget:self action:@selector(buttonClicked:) forControlEvents:UIControlEventTouchUpInside];

    //添加黄线

    UIView *xianView = [[UIView alloc]initWithFrame:CGRectMake(0, 30, backView.frame.size.width, 1)];

    xianView.backgroundColor = [UIColor yellowColor];

    [backView addSubview:xianView];

    //添加内容

    UILabel *label = [[UILabel alloc]initWithFrame:CGRectMake(0, 35, backView.frame.size.width, 40)];

    label.backgroundColor = [UIColor clearColor];

    label.text = @"默认不讲话5秒后自动关闭，间隔不讲话2秒后关闭，最多说20秒";

    label.font = [UIFont boldSystemFontOfSize:15];

    label.textAlignment = UITextAlignmentCenter;

    label.textColor = [UIColor yellowColor];

    [backView addSubview:label];

    label.numberOfLines = 0;

    //添加中间图片

    speechImage = [[UIImageView alloc]initWithFrame:CGRectMake((self.frame.size.width-50)/2, 80, 50, 85)];

    speechImage.image = [UIImage imageNamed:@"yuyin_01.png"];

    [backView addSubview:speechImage];

    //添加说完了按钮

    UIButton *submitButton = [UIButton buttonWithType:UIButtonTypeCustom];

    submitButton.frame = CGRectMake((backView.frame.size.width-170)/2, 170, 150, 35);

    submitButton.tag = 2;

    [submitButton setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];

    [submitButton setTitle:@"说完了" forState:UIControlStateNormal];

    [submitButton setBackgroundImage:[UIImage imageNamed:@"alert_tButton.png"] forState:UIControlStateNormal];

    [submitButton addTarget:self action:@selector(buttonClicked:) forControlEvents:UIControlEventTouchUpInside];

    [backView addSubview:submitButton];

    //想添加什么由此添加

    //创建对象

    NSString *initString = [[NSString alloc] initWithFormat:@"appid=%@,timeout=%@",APPID,TIMEOUT];

    //语音识别对象创建

    _iFlySpeechRecognizer = nil;

    _iFlySpeechRecognizer = [IFlySpeechRecognizer createRecognizer:initString delegate:self];

//    _iFlySpeechRecognizer.delegate = self;

    /*

     2.vad_bos:静音超时时间,即用户多长时间不说话则当做超 时处理,单位:ms,engine 指定 sms 识别默认值为 5000,其他 情况默认值为 4000,范围 0-10000;

     3.vad_eos:后端点静音检测时间,即用户停止说话多长时间 内即认为不再输入,自动停止录音,单位:ms,sms 识别默认 值为 1800,其他默认值为 700,范围 0-10000;

     */

    [_iFlySpeechRecognizer setParameter:@"domain" value:@"sms"];

    [_iFlySpeechRecognizer setParameter:@"sample_rate" value:@"16000"];

    [_iFlySpeechRecognizer setParameter:@"plain_result" value:@"0"];

    initString = nil;

    //开始识别

    [_iFlySpeechRecognizer startListening];

}

//按钮处理方法

-(void) buttonClicked:(id)sender

{

    [self dismissWithClickedButtonIndex:0 animated:YES];

}

//显示

-(void)show

{

//    [super show];

    UIWindow *window =  [UIApplication sharedApplication].keyWindow;

    backgroundView = [[UIView alloc]initWithFrame:window.frame];

    backgroundView.backgroundColor = [UIColor clearColor];

    [backgroundView addSubview:self];

    [window addSubview:backgroundView];

}

//弹出框消失

-(void)dismissWithClickedButtonIndex:(NSInteger)buttonIndex animated:(BOOL)animated

{

    [_iFlySpeechRecognizer stopListening];

    [_iFlySpeechRecognizer cancel];

    [_iFlySpeechRecognizer setDelegate:nil];

    _iFlySpeechRecognizer = nil;

    speechImage = nil;

    [backgroundView removeFromSuperview];

    backgroundView = nil;

}

#pragma mark - IFlySpeechRecognizerDelegate

- (void) onVolumeChanged: (int)volume

{

    NSLog(@"%d",volume);

    //录音的音量，音量范围1~100

    if (volume>=0 &&volume<=5) {

        speechImage.image = [UIImage imageNamed:@"yuyin_01.png"];

    }else if(volume>5 && volume<=30){

        speechImage.image = [UIImage imageNamed:@"yuyin_02.png"];

    }else{

        speechImage.image = [UIImage imageNamed:@"yuyin_03.png"];

    }

}

- (void) onBeginOfSpeech

{

    NSLog(@"正在录音");

}

- (void) onEndOfSpeech

{

    NSLog(@"停止录音");

}

- (void) onError:(IFlySpeechError *) error

{

    NSLog(@"停止录音%@,%@",error,[error errorDesc]);

    [self dismissWithClickedButtonIndex:0 animated:YES];

}

//结果

- (void) onResults:(NSArray *) results

{

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

    NSDictionary *dic = [results objectAtIndex:0];

    for (NSString *key in dic) {

        [result appendFormat:@"%@",key];

    }

    NSLog(@"转写结果：%@--results:%@",result,results);

    //返回结果

    [_speechDelegate getResultText:result];

}

@end

源码下载地址：

http://download.csdn.net/detail/rhljiayou/5889565

巴特西

iphone之使用讯飞语音sdk实现语音识别功能

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