文本转音频
iOS 语音播放文字内容--制作简易听书软件(AVSpeechSynthesizer)
听书.png
源码地址：
Snip20160730_3.png
下面附上代码（代码中有详细的注释）
//
// FFVoicePlayTextController.m
// CollectionsOfExample
#import "FFVoicePlayTextController.h"
//system
#import <AVFoundation/AVFoundation.h>
@interface FFVoicePlayTextController ()<AVSpeechSynthesizerDelegate>
/** 文本输入框 */
@property (weak, nonatomic) IBOutlet UITextView *textView;
/** 语言数组 */
@property (nonatomic, strong) NSArray<AVSpeechSynthesisVoice *> *laungeVoices;
/** 语音合成器 */
@property (nonatomic, strong) AVSpeechSynthesizer *synthesizer;
@end
@implementation FFVoicePlayTextController
- (void)viewDidLoad {
[super viewDidLoad];
self.navigationItem.title = @"语音播放文字内容";
}
/***********************************懒加载***********************************/
#pragma mark - 懒加载
- (NSArray<AVSpeechSynthesisVoice *> *)laungeVoices {
if (_laungeVoices == nil) {
_laungeVoices = @[
//美式英语
[AVSpeechSynthesisVoice voiceWithLanguage:@"en-US"],
//英式英语
[AVSpeechSynthesisVoice voiceWithLanguage:@"en-GB"],
//中文
[AVSpeechSynthesisVoice voiceWithLanguage:@"zh-CN"]
];
}
return _laungeVoices;
}
- (AVSpeechSynthesizer *)synthesizer {
if (_synthesizer == nil) {
_synthesizer = [[AVSpeechSynthesizer alloc] init];
_synthesizer.delegate = self;
}
return _synthesizer;
}
/***********************************事件处理***********************************/
#pragma mark - 事件处理
/** 语音播放 */
- (IBAction)voiceBtnClick:(UIButton *)sender {
//创建一个会话
AVSpeechUtterance *utterance = [[AVSpeechUtterance alloc] ];
//选择语言发音的类别，如果有中文，一定要选择中文，要不然无法播放语音
utterance.voice = self.laungeVoices[2];
//播放语言的速率，值越大，播放速率越快
utterance.rate = 0.4f;
//音调 -- 为语句指定pitchMultiplier ，可以在播放特定语句时改变声音的音调、pitchMultiplier的允许值一般介于0.5(低音调)和2.0(高音调)之间
utterance.pitchMultiplier = 0.8f;
//让语音合成器在播放下一句之前有短暂时间的暂停，也可以类似的设置preUtteranceDelay
utterance.postUtteranceDelay = 0.1f;
//播放语言
[self.synthesizer speakUtterance:utterance];
}
/** 暂停语音播放/回复语音播放 */
- (IBAction)playAndPauseBtnClick:(UIButton *)sender {
if (self.synthesizer.isPaused == YES) { //暂停状态
//继续播放
[self.synthesizer continueSpeaking];
}
else { //现在在播放
//立即暂停播放
[self.synthesizer pauseSpeakingAtBoundary:AVSpeechBoundaryImmediate];
}
}
/** 停止播放语音 */
- (void)stopPlayVoice {
if (self.synthesizer.isSpeaking) { //正在语音播放
//立即停止播放语音
[self.synthesizer stopSpeakingAtBoundary:AVSpeechBoundaryImmediate];
}
}
/**********************AVSpeechSynthesizerDelegate(代理方法)***********************/
#pragma mark - AVSpeechSynthesizerDelegate(代理方法)
- (void)speechSynthesizer:(AVSpeechSynthesizer *)synthesizer didStartSpeechUtterance:(AVSpeechUtterance *)utterance {
NSLog(@"开始播放语音的时候调用");
}
- (void)speechSynthesizer:(AVSpeechSynthesizer *)synthesizer didFinishSpeechUtterance:(AVSpeechUtterance *)utterance {
NSLog(@"语音播放结束的时候调用");
}
- (void)speechSynthesizer:(AVSpeechSynthesizer *)synthesizer didPauseSpeechUtterance:(AVSpeechUtterance *)utterance {
NSLog(@"暂停语音播放的时候调用");
}
- (void)speechSynthesizer:(AVSpeechSynthesizer *)synthesizer didContinueSpeechUtterance:(AVSpeechUtterance *)utterance {
NSLog(@"继续播放语音的时候调用");
}
- (void)speechSynthesizer:(AVSpeechSynthesizer *)synthesizer didCancelSpeechUtterance:(AVSpeechUtterance *)utterance {
NSLog(@"取消语音播放的时候调用");
}
- (void)speechSynthesizer:(AVSpeechSynthesizer *)synthesizer willSpeakRangeOfSpeechString:(NSRange)characterRange utterance:(AVSpeechUtterance *)utterance {
/** 将要播放的语音文字 */
NSString *willSpeakRangeOfSpeechString = [utterance.speechString substringWithRange:characterRange];
NSLog(@"即将播放的语音文字:%@",willSpeakRangeOfSpeechString);
}
@end
支持的语言语音如下：
"[AVSpeechSynthesisVoice 0x978a0b0] Language: th-TH",
"[AVSpeechSynthesisVoice 0x977a450] Language: pt-BR",
"[AVSpeechSynthesisVoice 0x977a480] Language: sk-SK",
"[AVSpeechSynthesisVoice 0x978ad50] Language: fr-CA",
"[AVSpeechSynthesisVoice 0x978ada0] Language: ro-RO",
"[AVSpeechSynthesisVoice 0x97823f0] Language: no-NO",
"[AVSpeechSynthesisVoice 0x978e7b0] Language: fi-FI",
"[AVSpeechSynthesisVoice 0x978af50] Language: pl-PL",
"[AVSpeechSynthesisVoice 0x978afa0] Language: de-DE",
"[AVSpeechSynthesisVoice 0x978e390] Language: nl-NL",
"[AVSpeechSynthesisVoice 0x978b030] Language: id-ID",
"[AVSpeechSynthesisVoice 0x978b080] Language: tr-TR",
"[AVSpeechSynthesisVoice 0x978b0d0] Language: it-IT",
"[AVSpeechSynthesisVoice 0x978b120] Language: pt-PT",
"[AVSpeechSynthesisVoice 0x978b170] Language: fr-FR",
"[AVSpeechSynthesisVoice 0x978b1c0] Language: ru-RU",
"[AVSpeechSynthesisVoice 0x978b210] Language: es-MX",
"[AVSpeechSynthesisVoice 0x978b2d0] Language: zh-HK", 中文(香港) 粤语
"[AVSpeechSynthesisVoice 0x978b320] Language: sv-SE",
"[AVSpeechSynthesisVoice 0x978b010] Language: hu-HU",
"[AVSpeechSynthesisVoice 0x978b440] Language: zh-TW", 中文(台湾)
"[AVSpeechSynthesisVoice 0x978b490] Language: es-ES",
"[AVSpeechSynthesisVoice 0x978b4e0] Language: zh-CN", 中文(普通话)
"[AVSpeechSynthesisVoice 0x978b530] Language: nl-BE",
"[AVSpeechSynthesisVoice 0x978b580] Language: en-GB", 英式英语
"[AVSpeechSynthesisVoice 0x978b5d0] Language: ar-SA",
"[AVSpeechSynthesisVoice 0x978b620] Language: ko-KR",
"[AVSpeechSynthesisVoice 0x978b670] Language: cs-CZ",
"[AVSpeechSynthesisVoice 0x978b6c0] Language: en-ZA",
"[AVSpeechSynthesisVoice 0x978aed0] Language: en-AU",
"[AVSpeechSynthesisVoice 0x978af20] Language: da-DK",
"[AVSpeechSynthesisVoice 0x978b810] Language: en-US", 美式英语
"[AVSpeechSynthesisVoice 0x978b860] Language: en-IE",
"[AVSpeechSynthesisVoice 0x978b8b0] Language: hi-IN",
"[AVSpeechSynthesisVoice 0x978b900] Language: el-GR",
"[AVSpeechSynthesisVoice 0x978b950] Language: ja-JP" )
