Text programmgesteuert in Audiodatei speichern

Question

Es ist möglich, Text als Audiodatei zu speichern, wie im Screenshot gezeigt. Jetzt ist meine Frage, wie man das gleiche programmatisch macht.

Jede Hilfe sehr geschätzt.

Answer 1

NSSpeechSynthesizer macht diesen Job.

Sagen wir die Eigenschaft haben:

@property NSSpeechSynthesizer *synth; 

, die wir wie folgt initialisieren:

synth = [[NSSpeechSynthesizer alloc] initWithVoice:nil]; 

wir tun können:

NSURL *saveURL = [NSURL fileURLWithPath:[@"~/Desktop/SpokenText.aiff" stringByExpandingTildeInPath]]; 
[synth startSpeakingString:@"A spoken short text" toURL:saveURL]; 

Vor dem Speichern wir wahrscheinlich das ändern wollen Stimme oder das Volumen:

[synth setVolume:0.5f]; 
[synth setVoice:voiceID]; 

wobei der value for volume in Fließkomma-Einheiten von 0.0 bis 1.0 und voiceID ist ein voice identifier ausgedrückt wird.

Um alle verfügbaren Sprachkennungen finden Sie unter:

NSArray *voiceIdentifiers = [NSSpeechSynthesizer availableVoices]; 
NSLog(@"%li %@",voiceIdentifiers.count,voiceIdentifiers); 

Ausgabe auf OS X 10.10.3 mit allen installierten Stimmen:

101 (
    "com.apple.speech.synthesis.voice.Agnes", 
    "com.apple.speech.synthesis.voice.Albert", 
    "com.apple.speech.synthesis.voice.Alex", 
    "com.apple.speech.synthesis.voice.alice.premium", 
    "com.apple.speech.synthesis.voice.allison.premium", 
    "com.apple.speech.synthesis.voice.alva.premium", 
    "com.apple.speech.synthesis.voice.amelie.premium", 
    "com.apple.speech.synthesis.voice.angelica.premium", 
    "com.apple.speech.synthesis.voice.anna.premium", 
    "com.apple.speech.synthesis.voice.audrey.premium", 
    "com.apple.speech.synthesis.voice.aurelie.premium", 
    "com.apple.speech.synthesis.voice.ava.premium", 
    "com.apple.speech.synthesis.voice.BadNews", 
    "com.apple.speech.synthesis.voice.Bahh", 
    "com.apple.speech.synthesis.voice.Bells", 
    "com.apple.speech.synthesis.voice.Boing", 
    "com.apple.speech.synthesis.voice.Bruce", 
    "com.apple.speech.synthesis.voice.Bubbles", 
    "com.apple.speech.synthesis.voice.carlos.premium", 
    "com.apple.speech.synthesis.voice.carmit.premium", 
    "com.apple.speech.synthesis.voice.catarina.premium", 
    "com.apple.speech.synthesis.voice.Cellos", 
    "com.apple.speech.synthesis.voice.cem.premium", 
    "com.apple.speech.synthesis.voice.chantal.premium", 
    "com.apple.speech.synthesis.voice.claire.premium", 
    "com.apple.speech.synthesis.voice.damayanti.premium", 
    "com.apple.speech.synthesis.voice.daniel.premium", 
    "com.apple.speech.synthesis.voice.Deranged", 
    "com.apple.speech.synthesis.voice.diego.premium", 
    "com.apple.speech.synthesis.voice.ellen.premium", 
    "com.apple.speech.synthesis.voice.ewa.premium", 
    "com.apple.speech.synthesis.voice.federica.premium", 
    "com.apple.speech.synthesis.voice.felipe.premium", 
    "com.apple.speech.synthesis.voice.fiona.premium", 
    "com.apple.speech.synthesis.voice.Fred", 
    "com.apple.speech.synthesis.voice.GoodNews", 
    "com.apple.speech.synthesis.voice.henrik.premium", 
    "com.apple.speech.synthesis.voice.Hysterical", 
    "com.apple.speech.synthesis.voice.ioana.premium", 
    "com.apple.speech.synthesis.voice.iveta.premium", 
    "com.apple.speech.synthesis.voice.joana.premium", 
    "com.apple.speech.synthesis.voice.jorge.premium", 
    "com.apple.speech.synthesis.voice.juan.premium", 
    "com.apple.speech.synthesis.voice.Junior", 
    "com.apple.speech.synthesis.voice.kanya.premium", 
    "com.apple.speech.synthesis.voice.karen.premium", 
    "com.apple.speech.synthesis.voice.kate.premium", 
    "com.apple.speech.synthesis.voice.Kathy", 
    "com.apple.speech.synthesis.voice.katya.premium", 
    "com.apple.speech.synthesis.voice.klara.premium", 
    "com.apple.speech.synthesis.voice.kyoko.premium", 
    "com.apple.speech.synthesis.voice.laura.premium", 
    "com.apple.speech.synthesis.voice.lee.premium", 
    "com.apple.speech.synthesis.voice.lekha.premium", 
    "com.apple.speech.synthesis.voice.luca.premium", 
    "com.apple.speech.synthesis.voice.luciana.premium", 
    "com.apple.speech.synthesis.voice.magnus.premium", 
    "com.apple.speech.synthesis.voice.mariska.premium", 
    "com.apple.speech.synthesis.voice.markus.premium", 
    "com.apple.speech.synthesis.voice.mei-jia.premium", 
    "com.apple.speech.synthesis.voice.melina.premium", 
    "com.apple.speech.synthesis.voice.milena.premium", 
    "com.apple.speech.synthesis.voice.moira.premium", 
    "com.apple.speech.synthesis.voice.monica.premium", 
    "com.apple.speech.synthesis.voice.nicolas.premium", 
    "com.apple.speech.synthesis.voice.nikos.premium", 
    "com.apple.speech.synthesis.voice.nora.premium", 
    "com.apple.speech.synthesis.voice.oliver.premium", 
    "com.apple.speech.synthesis.voice.oskar.premium", 
    "com.apple.speech.synthesis.voice.otoya.premium", 
    "com.apple.speech.synthesis.voice.paola.premium", 
    "com.apple.speech.synthesis.voice.paulina.premium", 
    "com.apple.speech.synthesis.voice.petra.premium", 
    "com.apple.speech.synthesis.voice.Organ", 
    "com.apple.speech.synthesis.voice.Princess", 
    "com.apple.speech.synthesis.voice.Ralph", 
    "com.apple.speech.synthesis.voice.samantha.premium", 
    "com.apple.speech.synthesis.voice.sara.premium", 
    "com.apple.speech.synthesis.voice.satu.premium", 
    "com.apple.speech.synthesis.voice.serena.premium", 
    "com.apple.speech.synthesis.voice.sin-ji.premium", 
    "com.apple.speech.synthesis.voice.soledad.premium", 
    "com.apple.speech.synthesis.voice.susan.premium", 
    "com.apple.speech.synthesis.voice.tarik.premium", 
    "com.apple.speech.synthesis.voice.tessa.premium", 
    "com.apple.speech.synthesis.voice.thomas.premium", 
    "com.apple.speech.synthesis.voice.ting-ting.premium", 
    "com.apple.speech.synthesis.voice.tom.premium", 
    "com.apple.speech.synthesis.voice.Trinoids", 
    "com.apple.speech.synthesis.voice.veena.premium", 
    "com.apple.speech.synthesis.voice.Vicki", 
    "com.apple.speech.synthesis.voice.Victoria", 
    "com.apple.speech.synthesis.voice.Whisper", 
    "com.apple.speech.synthesis.voice.xander.premium", 
    "com.apple.speech.synthesis.voice.yannick.premium", 
    "com.apple.speech.synthesis.voice.yelda.premium", 
    "com.apple.speech.synthesis.voice.yuna.premium", 
    "com.apple.speech.synthesis.voice.yuri.premium", 
    "com.apple.speech.synthesis.voice.Zarvox", 
    "com.apple.speech.synthesis.voice.zosia.premium", 
    "com.apple.speech.synthesis.voice.zuzana.premium" 
) 

Answer 2

von iOS Ab 7 Apple die folgenden API bietet ...

https://developer.apple.com/library/ios/documentation/AVFoundation/Reference/AVSpeechSynthesizer_Ref/Reference/Reference.html

Sehen Sie diese Antwort https://stackoverflow.com/a/17465494/215748

#import <AVFoundation/AVFoundation.h> 
… 
AVSpeechUtterance *utterance = [AVSpeechUtterance 
          speechUtteranceWithString:@"Hello world"]; 
AVSpeechSynthesizer *synth = [[AVSpeechSynthesizer alloc] init]; 
[synth speakUtterance:utterance];