iphone之使用讯飞语音sdk实现语音识别功能

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

#import "iflyMSC/IFlySpeechRecognizer.h"

#import "iflyMSC/IFlyDataUploader.h"

@protocol SpeechAlertViewDelegate

@optional

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

@end

@interface SpeechAlertView : UIAlertView

{

UIImageView *speechImage;//声音图片

IFlySpeechRecognizer * _iFlySpeechRecognizer;//语音识别对象

UIView *backgroundView;

}

@property (assign, nonatomic)id 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：

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