stop_speaking_async does not work

[oliverguhr]

• Package Name: azure-cognitiveservices-speech
• Package Version: 1.17.0
• Operating System: Linux
• Python Version: Python 3.8.10

Describe the bug
The stop_speaking_async (and stop_speaking) do not stop the audio output as described in the documentation

To Reproduce
Steps to reproduce the behavior:

1. replace your API credentials
2. run this code

import time
from azure.cognitiveservices.speech import AudioDataStream, SpeechConfig, SpeechSynthesizer, SpeechSynthesisOutputFormat
from azure.cognitiveservices.speech.audio import AudioOutputConfig


def main():
    speech_config = SpeechConfig(subscription="", region="")
    audio_config = AudioOutputConfig(use_default_speaker=True)
    synthesizer = SpeechSynthesizer(speech_config=speech_config, audio_config=audio_config)
    print("speak")
    text = "This is a very very very very very very very very very very very very very very very very long text."
    _ = synthesizer.start_speaking_text_async(text)
    print("sleep")
    time.sleep(1)
    print("stop")
    _ = synthesizer.stop_speaking_async()
    print("done")
   

main()

Expected behavior
The method stop_speaking_async should stop the audio output.

[xiangyan99]

Thanks for the feedback, we’ll investigate asap.

[yulin-li]

@oliverguhr, thank you for reporting this issue, and I can repro it. We will fix this.

[yulin-li]

Closing this issue and tracking it in Azure-Samples/cognitive-services-speech-sdk#1686