That option doesn't exist currently. Take a look at the code, it shouldn't be really hard to add one as long as not specifying it maintains current behavior. Give a try at a pull request to add the feature.
On Wednesday, February 24, 2016, Naveen Tamanam <naveen32india@gmail.com> wrote:
I would like to play different invalid sound for the first failure which would be long sound and some other invalid sound for next retries.Do we have any kind of option like greet-long and greet-short to play different invalid sounds, like invalid-long invalid-short ?
--Thanks & Regards,
Naveen Tamanam