Open Radar

 
This is a duplicate of rdar://15798036
This is still happening in 7.1

Kevin Chen10-Jan-2014 05:38 PM

Summary:
AVSpeechSynthesizer provides a method called stopSpeakingAtBoundary:, which is supposed to stop speaking and clear the queue of utterance. However, it does not work after the first AVSpeechUtterance has been spoken.

Steps to Reproduce:
1. Create an AVSpeechSynthesizer and give it AVSpeechUtterances faster than it can speak.

AVSpeechSynthesizer *synthesizer = [[AVSpeechSynthesizer alloc] init];
for (int i = 0; i < 100; i++)
    [synthesizer speakUtterance:[AVSpeechUtterance speechUtteranceWithString:@"I am a particularly annoying bug."]];

2. Some time later, attempt to stop speech synthesis

[synthesizer stopSpeakingAtBoundary:AVSpeechBoundaryImmediate];

(AVSpeechBoundaryWord works too)

Expected Results:
Speaking stops immediately or after the current word is done, whichever was specified.

Actual Results:
Speaking will only stop if stopSpeakingAtBoundary: was called during the first AVSpeechUtterance. Afterwards, stopSpeakingAtBoundary: will not affect speech synthesis and will return NO, indicating that speaking did not stop.

Version:
iOS 7.1

Notes:
For more information: http://stackoverflow.com/questions/19672814/an-issue-with-avspeechsynthesizer-any-workarounds