[BUG]: Audio recognizer locks up if mic signal is quiet on android / chrome

[mikeymasonic]

Describe the bug
I first noticed this bug while developing an app and testing it on my android phone. Totally thought it was my code causing the issue, then I went directly to the teachable machine's demo I created and noticed it's happening there too.

Phone I'm using: Unlocked Samsung Galaxy s20 FE

Basically if I visit the teachable machine's model (audio model) I created on android using Chrome, Brave, or Samsung Browser and there is little to no microphone input the whole model freezes, spectrograph, number output etc and freeze in place. If I make another sound, it will update again. Seems to lock up on the last sample if the mic db threshold isn't above a certain level.

Works perfectly using Firefox on my phone.

To Reproduce
Steps to reproduce the behavior:

1. Go to this url using chrome on an android device : https://teachablemachine.withgoogle.com/models/2V9Y6m3Ug/
2. Try to make a sound, see if it freezes

Relevant Links
https://teachablemachine.withgoogle.com/models/2V9Y6m3Ug/

Expected behavior
Samples continually update even with lack of audio input

Smartphone (please complete the following information):

• Device: Samsung Galaxy s20FE
• OS: Android 10
• Browser: Chrome, Brave, or Samsung Browser
• Version: Chrome 86.0.4240.198