CODEWITHSUNDEEP
iosobjective-ctext-to-speech
user2880019
user2880019

Reputation: 21

AVSpeechSynthesizer continueSpeaking not working

I have created an AVSpeechSynthesizer and started playing an AVSpeechUtterance. This works fine. If the user presses a button I pause the synthesizer. This also works. However, when I try to restart the synthesizer with the continueSpeaking method, nothing happens. If I check the isSpeaking property it is still NO. How can I get the audio to start playing again from where it left off?

AVSpeechSynthesizer *synthesizer_;

synthesizer_ = [[AVSpeechSynthesizer alloc] init];
synthesizer_.delegate = self;


- (void)textToSpeech{
    AVSpeechUtterance *utterance = [[AVSpeechUtterance alloc]initWithString:itemText];
    utterance.voice = [AVSpeechSynthesisVoice voiceWithLanguage:localeCode];
    utterance.rate = UTTERANCE_RATE;
    utterance.preUtteranceDelay = itemDelayTimeInterval;
    [synthesizer_ speakUtterance:utterance];
}

- (IBAction)pauseButtonPressed:(id)sender {
    if (synthesizer_.isSpeaking) {
        [synthesizer_ pauseSpeakingAtBoundary:AVSpeechBoundaryWord];
    }
    else{
        [synthesizer_ continueSpeaking];
    }

}

Upvotes: 2

Views: 2403

Answers (4)

birdman
birdman

Reputation: 1144

I found this very nice and easy to use AVSpeechSynthesizer library on GitHub.

It manages multiple utterances properly using a NSMutableArray. As well as implementing pausing, stopping and continuing properly.

https://github.com/quentinhayot/QHSpeechSynthesizerQueue

I updated the -(void)next function to correct an issue when isSpeaking:

-(void)next{
    if (_play && [_queue count] > 0 && ![_synthesizer isSpeaking]){
        AVSpeechUtterance *utterance = [_queue firstObject];
        [_queue removeObjectAtIndex:0];
        [_synthesizer speakUtterance:utterance];
    }

    //added this to fix issue when already speaking
    else if ([_synthesizer isSpeaking]) {
        NSLog(@"AVSpeech isSpeaking");
        [NSTimer scheduledTimerWithTimeInterval:0.5f target:self selector:@selector(tmrNextDelay_Method:) userInfo:nil repeats:NO];
    }
}

-(void)tmrNextDelay_Method:(NSTimer *)timer{
    [self next];
}

Upvotes: 0

Jouhar
Jouhar

Reputation: 288

Just start with isPaused and it will works fine:

NOTE: Use AVSpeechBoundaryImmediate instead of AVSpeechBoundaryWord for better results.

- (IBAction)pauseButtonPressed:(id)sender {
    if (synthesizer_.isPaused) {
        [synthesizer_ continueSpeaking];
    }
    else{
        [synthesizer_ pauseSpeakingAtBoundary: AVSpeechBoundaryImmediate];
    }
}

Upvotes: 1

abdul sathar
abdul sathar

Reputation: 2396

Try to use follow code

-(void)stopSpeechReading
{
    if([synthesize isSpeaking]) {
        NSLog(@"Reading has been stopped");
        [synthesize stopSpeakingAtBoundary:AVSpeechBoundaryImmediate];
        AVSpeechUtterance *utterance = [AVSpeechUtterance speechUtteranceWithString:@""];
        [synthesize speakUtterance:utterance];
        [synthesize stopSpeakingAtBoundary:AVSpeechBoundaryImmediate];
    }
}
-(void)pauseSpeechReading
{
    if([synthesize isSpeaking]) {
        NSLog(@"Reading paused");
        [synthesize pauseSpeakingAtBoundary:AVSpeechBoundaryImmediate];
        AVSpeechUtterance *utterance = [AVSpeechUtterance speechUtteranceWithString:@""];
        [synthesize speakUtterance:utterance];
        [synthesize pauseSpeakingAtBoundary:AVSpeechBoundaryImmediate];
    }
}
-(void)resumeSpeechReading
{
     NSLog(@"Reading resumed");
    [synthesize continueSpeaking];
}

Upvotes: 0

Zsolt torma
Zsolt torma

Reputation: 11

Your original code is:

if (synthesizer_.isSpeaking) {

Try this instead:

if (![synthesizer_ isPaused])

Reason:

From the docs: speaking A Boolean value that indicates whether the synthesizer is speaking. (read-only)

@property(nonatomic, readonly, getter=isSpeaking) BOOL speaking

Discussion Returns YES if the synthesizer is speaking or has utterances enqueued to speak, even if it is currently paused. Returns NO if the synthesizer has finished speaking all utterances in its queue or if it has not yet been given an utterance to speak.

Availability Available in iOS 7.0 and later. Declared In AVSpeechSynthesis.h

So, if you use this property, and the speech is paused, this property can be true and your speech continue code will not run.

Upvotes: 1

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