iOS语音识别，语音播报，文字变语音播报，语音变文字

首先使用的是科大讯飞的sdk

1.语音识别部分

AppDelegate.m

#import "AppDelegate.h"

#import <iflyMSC/iflyMSC.h>

@interface AppDelegate ()

@end

@implementation AppDelegate

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

NSString *initString = [[NSString alloc] initWithFormat:@"appid=%@",@"你的app ID"];

[IFlySpeechUtility createUtility:initString];

return YES;

}

.h文件

#import <UIKit/UIKit.h>

@interface ViewController : UIViewController

@end

.m实现文件

#import "ViewController.h"

#import <iflyMSC/iflyMSC.h>

@interface ViewController ()<IFlySpeechRecognizerDelegate>

{

//不带界面的识别对象

IFlySpeechRecognizer *iFlySpeechRecognizer;

}

@property(nonatomic,strong)UILabel * showLabel;

@end

@implementation ViewController

-(void)viewDidLoad{

[super viewDidLoad];

self.showLabel = [[UILabel alloc]initWithFrame:CGRectMake(8,200,300,200)];

self.showLabel.textColor = [UIColor redColor];

[self.view addSubview:self.showLabel];

//1.创建语音听写对象

iFlySpeechRecognizer = [IFlySpeechRecognizer sharedInstance]; //设置听写模式

iFlySpeechRecognizer.delegate = self;

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

//2.设置听写参数

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

UIButton * startButton = [[UIButton alloc]initWithFrame:CGRectMake(20,100,100,50)];

[startButton addTarget:self action:@selector(startButtonDidClick) forControlEvents:UIControlEventTouchUpInside];

startButton.backgroundColor = [UIColor orangeColor];

[startButton setTitle:@"开始录音" forState:UIControlStateNormal];

[self.view addSubview:startButton];

UIButton * endButton = [[UIButton alloc]initWithFrame:CGRectMake(200,100,100,50)];

[endButton addTarget:self action:@selector(endButtonDidClick) forControlEvents:UIControlEventTouchUpInside];

endButton.backgroundColor = [UIColor orangeColor];

[endButton setTitle:@"结束录音" forState:UIControlStateNormal];

[self.view addSubview:endButton];

}

-(void)startButtonDidClick{

//3.启动识别服务

[iFlySpeechRecognizer startListening];

}

-(void)endButtonDidClick{

//识别服务

[iFlySpeechRecognizer stopListening];

}

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

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

if (!isLast) {

NSDictionary *dic = results[0];

NSArray * keys = [dic allKeys];

for (NSString *key in keys) {

NSData * resData = [key dataUsingEncoding:NSUTF8StringEncoding];

NSDictionary * resultFromJson =  [NSJSONSerialization JSONObjectWithData:resData options:NSJSONReadingAllowFragments error:nil];

NSArray * tempArray = resultFromJson[@"ws"];

for (NSDictionary * tempDic in tempArray) {

NSArray * cwArray = tempDic[@"cw"];

for (NSDictionary * resultDic in cwArray) {

NSString * str = [NSString stringWithFormat:@"%@",resultDic[@"w"]];

[resultString appendString:str];

}

}

}

self.showLabel.text = [NSString stringWithFormat:@"%@",resultString];

}

}

/*识别会话结束返回代理

@ param error 错误码,error.errorCode=0表示正常结束,非0表示发生错误。 */

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

NSLog(@"%@",error.errorDesc);

}

/**

停止录音回调

****/

- (void) onEndOfSpeech {

}

/**

开始识别回调

****/

- (void) onBeginOfSpeech {

}

/**

音量回调函数 volume 0-30

****/

- (void) onVolumeChanged: (int)volume {

}

@end

2  文字变语音 语音合成播报部分

首先写一个工具当然这个不是我写的，能用^_^

.h 文件如下

#import <UIKit/UIKit.h>

#import <AVFoundation/AVSpeechSynthesis.h>

@interface SpeechSynthesizer : NSObject

+ (instancetype)sharedSpeechSynthesizer;

- (void)speakString:(NSString *)string;

- (void)stopSpeak;

@end

.m 文件如下

#import "SpeechSynthesizer.h"

@interface SpeechSynthesizer () <AVSpeechSynthesizerDelegate>

@property (nonatomic, strong, readwrite) AVSpeechSynthesizer *speechSynthesizer;

@end

@implementation SpeechSynthesizer

+ (instancetype)sharedSpeechSynthesizer

{

static id sharedInstance = nil;

static dispatch_once_t onceToken;

dispatch_once(&onceToken, ^{

sharedInstance = [[SpeechSynthesizer alloc] init];

});

return sharedInstance;

}

- (instancetype)init

{

if (self = [super init])

{

[self buildSpeechSynthesizer];

}

return self;

}

- (void)buildSpeechSynthesizer

{

if ([[[UIDevice currentDevice] systemVersion] floatValue] < 7.0)

{

return;

}

self.speechSynthesizer = [[AVSpeechSynthesizer alloc] init];

[self.speechSynthesizer setDelegate:self];

}

- (void)speakString:(NSString *)string

{

if (self.speechSynthesizer)

{

AVSpeechUtterance *aUtterance = [AVSpeechUtterance speechUtteranceWithString:string];

[aUtterance setVoice:[AVSpeechSynthesisVoice voiceWithLanguage:@"zh-CN"]];

//iOS语音合成在iOS8及以下版本系统上语速异常

if ([[[UIDevice currentDevice] systemVersion] floatValue] < 8.0)

{

aUtterance.rate = 0.25;//iOS7设置为0.25

}

else if ([[[UIDevice currentDevice] systemVersion] floatValue] < 9.0)

{

aUtterance.rate = 0.15;//iOS8设置为0.15

}

if ([self.speechSynthesizer isSpeaking])

{

[self.speechSynthesizer stopSpeakingAtBoundary:AVSpeechBoundaryWord];

}

[self.speechSynthesizer speakUtterance:aUtterance];

}

}

- (void)stopSpeak

{

if (self.speechSynthesizer)

{

[self.speechSynthesizer stopSpeakingAtBoundary:AVSpeechBoundaryImmediate];

}

}

@end

使用方法如下

语音播报“世界那么大我想去看看”

[[SpeechSynthesizer sharedSpeechSynthesizer] speakString:@"世界那么大我想去看看"];

停止播报

[[SpeechSynthesizer sharedSpeechSynthesizer] stopSpeak];