Continuous mode doesn't clear transcript

[thiagoss]

Not sure if this is a problem with this project or the underlying Web API. When using continuous mode it keeps listening as expected, but the transcript text is never cleared, even after issuing stopListening().

I also tried calling resetTranscript() after calling stopListening() but that seems to turn on listening again for some reason.

[JamesBrill]

Hi @thiagoss Can you please share the following:

• The device and browser you see this issue on
• The version of react-speech-recognition that you're using
• A code snippet of your usage of react-speech-recognition

Some initial comments:

• With continuous listening, only resetTranscript will clear the transcript. stopListening will just turn off the microphone, which prevents any additional transcript from being added; the existing transcript will remain.
• I also tried calling resetTranscript() after calling stopListening() but that seems to turn on listening again for some reason. This is surprising and is not something I have seen before. As mentioned above, a code snippet will help me understand your configuration and the behaviour you are seeing.
• What is the exact behaviour you would like to achieve? Perhaps you could describe your use case.

[thiagoss]

I just got latest master as of today (v3.2.0) and turned the example into the issue by adding my code to it: https://github.com/thiagoss/react-speech-recognition/tree/example-issue-58

It makes sense that stopListening doesn't clear the transcript but I'm still unsure why resetTranscript seems to make it start listening again. I was hoping resetting the transcript wouldn't change current listening state.

Testing on Windows Chrome Version 84.0.4147.135 (Official Build) (64-bit)

[JamesBrill]

Indeed, the reset should not affect the listening state.

Thanks for clarifying that, though I think you may be missing SpeechRecognitionPanel, which your example references but did not commit. Could you include that as well?

[thiagoss]

Oh, sorry about that. Just added the file.

[JamesBrill]

I was able to reproduce the bug; thanks for the example. I see there is a race condition between resetTranscript and stopListening. I am taking a look at a solution.

I see you also used clearTranscriptOnListen - note that this only does anything when continuous listening is turned off. This clears the transcript when startListening is called to restart the microphone for discontinuous listening - this works well for the typical "push to talk" use case.

For clearing the transcript when the user stops speaking during continuous listening, you are actually taking the right approach by listening for new final transcripts and resetting then. I will update this issue as soon as I've published a version that enables this to work as expected.

[JamesBrill]

@thiagoss Give v3.2.1 a try.

[thiagoss]

It worked! Thanks for the quick fix!