1.系统语音合成语音识别
#import "ViewController.h"
//导入语音合成系统库
#import <AVFoundation/AVFoundation.h>
//导入语音识别系统库
#import <Speech/Speech.h>
@interface ViewController ()<AVSpeechSynthesizerDelegate,SFSpeechRecognitionTaskDelegate,NFCTagReaderSessionDelegate>
@property (nonatomic, strong) AVSpeechSynthesizer *synthesizer;//语音合成iOS7开始支持
//iOS语音识别
@property (nonatomic, strong) SFSpeechRecognizer *speechRecognizer;
@property (nonatomic, strong) AVAudioEngine *audioEngine;
@property (nonatomic, strong) SFSpeechAudioBufferRecognitionRequest *recognitionRequest;
@property (nonatomic, strong) UITextView *textView;
@property (nonatomic, strong) UIButton *recordBtn;
@property (nonatomic, assign) BOOL isRecord;
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
[self.view setBackgroundColor:[UIColor whiteColor]];
float left=20;
self.textView=[[UITextView alloc] initWithFrame:CGRectMake(15, 44, self.view.frame.size.width-30, 120)];
self.textView.text=@"iOS7新特性，语音合成测试用例";
self.textView.textColor=[UIColor blackColor];
self.textView.font=[UIFont systemFontOfSize:16.0f];
self.textView.layer.borderWidth=1.0f;
self.textView.layer.borderColor=[UIColor grayColor].CGColor;
[self.view addSubview:self.textView];
UIButton *goBtn=[[UIButton alloc] initWithFrame:CGRectMake(left, self.textView.frame.origin.y+self.textView.frame.size.height+10, self.view.frame.size.width-2*left, 50)];
[goBtn setTitle:@"合成播放" forState:UIControlStateNormal];
[goBtn setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
[goBtn setBackgroundColor:[UIColor grayColor]];
[goBtn addTarget:self action:@selector(speakAction) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:goBtn];
self.recordBtn=[[UIButton alloc] initWithFrame:CGRectMake(left, goBtn.frame.origin.y+goBtn.frame.size.height+10, self.view.frame.size.width-2*left, 50)];
[self.recordBtn setTitle:@"录制识别" forState:UIControlStateNormal];
[self.recordBtn setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
[self.recordBtn setBackgroundColor:[UIColor grayColor]];
[self.recordBtn addTarget:self action:@selector(recordAction) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:self.recordBtn];
self.isRecord=NO;
}
//结束触摸
- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event {
//isExclusiveTouch一个布尔值来指示接收机处理触摸事件。
//没有触摸_textUser进入if内操作
if (![self.textView isExclusiveTouch]) {
//resignFirstResponder取消第一响应者状态的。如果对textfield使用的话，那么调用这个方法，textfield的第一响应者状态就会取消，然后键盘就消失了。
[self.textView resignFirstResponder];
}
}
-(void)recordAction{
if (self.isRecord) {
self.isRecord=NO;
[self stopRecording];
[self.recordBtn setTitle:@"录制识别" forState:UIControlStateNormal];
}else{
[SFSpeechRecognizer requestAuthorization:^(SFSpeechRecognizerAuthorizationStatus status) {
NSLog(@"status %@", status == SFSpeechRecognizerAuthorizationStatusAuthorized ? @"授权成功" : @"授权失败");
dispatch_async(dispatch_get_main_queue(), ^{
if (status == SFSpeechRecognizerAuthorizationStatusAuthorized) {
[self startRecording];
// //block回调方式
// [self.speechRecognizer recognitionTaskWithRequest:self.recognitionRequest resultHandler:^(SFSpeechRecognitionResult * _Nullable result, NSError * _Nullable error) {
//
// if (result.isFinal) {
// NSLog(@"is final: %d result: %@", result.isFinal, result.bestTranscription.formattedString);
// }
// }];
self.isRecord=YES;
[self.recordBtn setTitle:@"停止录制" forState:UIControlStateNormal];
//delegate回调方式
[self.speechRecognizer recognitionTaskWithRequest:self.recognitionRequest delegate:self];
}else{
UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"温馨提示" message:@"没有语音识别权限" preferredStyle:UIAlertControllerStyleAlert];
// 2.创建并添加按钮
UIAlertAction *cancelAction = [UIAlertAction actionWithTitle:@"暂不授权" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
}];
[alertController addAction:cancelAction];
// 2.创建并添加按钮
UIAlertAction *okAction = [UIAlertAction actionWithTitle:@"去授权" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
#ifdef __IPHONE_8_0
NSURL *url = [NSURL URLWithString:UIApplicationOpenSettingsURLString];
if ([[UIApplication sharedApplication]canOpenURL:url]) {
[[UIApplication sharedApplication]openURL:url];
}
#endif
}];
[alertController addAction:okAction];
[self presentViewController:alertController animated:YES completion:nil];
}
});
}];
}
}
-(void)speakAction{
[self speakString:self.textView.text];
}
-(void)viewDidAppear:(BOOL)animated{
[super viewDidAppear:animated];
// 请求识别权限info.plist
// <key>NSSpeechRecognitionUsageDescription</key>
// <string>请允许语音识别</string>
// <key>NSMicrophoneUsageDescription</key>
// <string>请允许麦克风</string>
return;
}
- (void)initEngine {
if (!self.speechRecognizer) {
// 设置语言
NSLocale *locale = [NSLocale localeWithLocaleIdentifier:@"zh-CN"];
self.speechRecognizer = [[SFSpeechRecognizer alloc] initWithLocale:locale];
}
if (!self.audioEngine) {
self.audioEngine = [[AVAudioEngine alloc] init];
}
AVAudioSession *audioSession = [AVAudioSession sharedInstance];
[audioSession setCategory:AVAudioSessionCategoryRecord mode:AVAudioSessionModeMeasurement options:AVAudioSessionCategoryOptionDuckOthers error:nil];
[audioSession setActive:YES withOptions:AVAudioSessionSetActiveOptionNotifyOthersOnDeactivation error:nil];
if (self.recognitionRequest) {
[self.recognitionRequest endAudio];
self.recognitionRequest = nil;
}
self.recognitionRequest = [[SFSpeechAudioBufferRecognitionRequest alloc] init];
self.recognitionRequest.shouldReportPartialResults = YES;
}
- (void)startRecording{
[self initEngine];
AVAudioFormat *recordingFormat = [[self.audioEngine inputNode] outputFormatForBus:0];
[[self.audioEngine inputNode] installTapOnBus:0 bufferSize:1024 format:recordingFormat block:^(AVAudioPCMBuffer * _Nonnull buffer, AVAudioTime * _Nonnull when) {
[self.recognitionRequest appendAudioPCMBuffer:buffer];
}];
[self.audioEngine prepare];
[self.audioEngine startAndReturnError:nil];
}
- (void)stopRecording{
[[self.audioEngine inputNode] removeTapOnBus:0];
[self.audioEngine stop];
[self.recognitionRequest endAudio];
self.recognitionRequest = nil;
}
-(void)speakString:(NSString *)string{
//避免手机静音合成语音不能播放
NSError *setCategoryErr = nil;
NSError *activationErr = nil;
[[AVAudioSession sharedInstance] setCategory: AVAudioSessionCategoryPlayback error:&setCategoryErr];
//magic is here
[[AVAudioSession sharedInstance] setActive:YES error:&activationErr];
//语音合成
//设置语言类别（ 不能被识别，返回值为nil）
AVSpeechSynthesisVoice *voiceType = [AVSpeechSynthesisVoice voiceWithLanguage:@"zh-CN"];
AVSpeechUtterance *utterance = [AVSpeechUtterance speechUtteranceWithString:string];
utterance.voice = voiceType;
utterance.rate *=1.0;//设置语速
utterance.volume =1.0;//设置音量
[self.synthesizer speakUtterance:utterance];
}
#pragma mark SFSpeechRecognitionTaskDelegate
- (void)speechRecognitionTask:(SFSpeechRecognitionTask *)task didFinishRecognition:(SFSpeechRecognitionResult *)recognitionResult{
dispatch_async(dispatch_get_main_queue(), ^{
if (recognitionResult.isFinal) {
NSLog(@"is final: %d result: %@", recognitionResult.isFinal, recognitionResult.bestTranscription.formattedString);
self.textView.text=recognitionResult.bestTranscription.formattedString;
}else{
self.textView.text=@"识别失败";
}
});
}
#pragma mark AVSpeechSynthesizerDelegate
-(void)speechSynthesizer:(AVSpeechSynthesizer *)synthesizer didStartSpeechUtterance:(AVSpeechUtterance *)utterance{
NSLog(@"语音合成开始");
}
-(void)speechSynthesizer:(AVSpeechSynthesizer *)synthesizer didFinishSpeechUtterance:(AVSpeechUtterance *)utterance{
NSLog(@"语音合成完成");
}
#pragma mark lazyloading
/**
@author Vie 2022年06月23日15:11:43
@初始化懒加载alertTipView
@return alertTipView
*/
-(AVSpeechSynthesizer *)synthesizer{
if (!_synthesizer) {
//语音合成
// 语音合成器会生成音频
_synthesizer = [[AVSpeechSynthesizer alloc] init];
_synthesizer.delegate=self;
}
return _synthesizer;
}
@end