iphone - iPhone 上的文字转语音

Question

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Answer 1

我已经调查过了，不幸的是，这些选项要么非常昂贵，要么质量很差:

• Acapela质量好但价格昂贵。
• Ivona iOS 版本和价格可应要求提供。
• VoiceText来自 NeoSpeech。价格可应要求提供。
• https://bitbucket.org/sfoster/iphone-tts/节日港口。质量差。

与此相关，您可以通过以下方式使用 Google 的在线 TTS(代码取自 iPhone SDK - Google TTS and encoding):

NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *path = [documentsDirectory stringByAppendingPathComponent:@"file.mp3"];

NSString *text = @"You are one chromosome away from being a potato.";
NSString *urlString = [NSString stringWithFormat:@"http://www.translate.google.com/translate_tts?tl=en&q=%@",text];
NSURL *url = [NSURL URLWithString:[urlString stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]];
NSMutableURLRequest* request = [[[NSMutableURLRequest alloc] initWithURL:url] autorelease];
[request setValue:@"Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6; rv:2.0.1) Gecko/20100101 Firefox/4.0.1" forHTTPHeaderField:@"User-Agent"];
NSURLResponse* response = nil;
NSError* error = nil;
NSData* data = [NSURLConnection sendSynchronousRequest:request
                                     returningResponse:&response
                                                 error:&error];
[data writeToFile:path atomically:YES];

AVAudioPlayer  *player;
NSError        *err;
if ([[NSFileManager defaultManager] fileExistsAtPath:path]) 
{    
    player = [[AVAudioPlayer alloc] initWithContentsOfURL:
              [NSURL fileURLWithPath:path] error:&err];
    player.volume = 0.4f;
    [player prepareToPlay];
    [player setNumberOfLoops:0];
    [player play];    
}

Apple 的画外音框架是私有(private)的，只能用于辅助功能。至少如果您希望您的申请获得批准。但是，如果您想在决定使用哪个系统时使用它，这里是:

// Not App Store safe. Only available in real devices.
// See http://arstechnica.com/apple/2010/02/iphone-voiceservices-looking-under-the-hood/

#define RTLD_LAZY 0x1
#define RTLD_NOW 0x2
#define RTLD_LOCAL 0x4
#define RTLD_GLOBAL 0x8

NSObject *voiceSynthesizer;
void *voiceServices;

-(void) say:(NSString*)text {
    if (!voiceSynthesizer)
    {
        NSString *vsLocation = @"/System/Library/PrivateFrameworks/VoiceServices.framework/VoiceServices";
        voiceServices = dlopen(vsLocation.UTF8String, RTLD_LAZY);
        voiceSynthesizer = [NSClassFromString(@"VSSpeechSynthesizer") new];
    }
    [voiceSynthesizer performSelector:@selector(startSpeakingString:) withObject:text];
}