Is this a new feature?

[Nolan Darilek]

I've noticed that some of my Android apps have started making noises
after speech stops. It's tough to describe. It's almost as if they're
injecting audio icons into every bit of speech that Spiel produces,
triggered to happen when the utterance completes.

A bit of unscientific rigor suggests that this happens in apps with
stock WebViews. I see this in Google Reader, as well as in apps that
display ads presumably in embedded views.

The issues are that this happens everywhere, not just within the view
content. I also don't know how to make it stop, and I don't think that
unrelated content should globally affect how my device behaves. The fact
that an app displays a WebView should not make my device start making
sounds everywhere.

Was a new feature introduced into the javascript shim that WebViews
download, a feature which plays audio icons? If so, could this be
disabled or configured somehow? I don't want it.

Thanks.