Hotword detection

[lpradovera]

Hello,
as of now, an Input component getting passed a one-of grammar with only some allowed digits stops execution anyway, returning a NoMatch event.
While in some situations this is needed, in some others it would be convenient to not return and just ignore not matching characters from a grammar.
Maybe this could be implemented as an option to Input to keep both functionalities.

Asterisk behaves that way with the STREAM FILE dialplan function.

Thanks!

[loopingrage]

I don't understand the issue. Can you provide an example please?

[benlangfeld]

In order to implement output interruption, it is necessary to run an input in parallel with an output. We run the input with a grammar which restricts DTMF. If invalid DTMF is received, the input terminates with <nomatch/>. We don't want the input to terminate, and instead continue to run until it receives valid input, times out, or is stopped.

[lpradovera]

To further clarify, this is the GRXML grammar example I am using: https://gist.github.com/659518c6f941c9a6e47c
I would need Input to be able to ignore DTMF input that is not in the one-of.
Thanks!

[loopingrage]

Gotcha. That behavior is often referred to as 'hotword' recognition. I'll look into getting it added next week.

[wchen]

revisit this (hotword detection) issue when we visit signal detection work.