Long decoding time and letter repetition for held out phones.

[CJai-K]

Apologies if this has been brough up before, but I wasn't able to find any discussion about this.

I've noticed whisper has the ability to transcribe longer, held out phones. For example, if I say "Umm" but extend the word for a few seconds I'll get a decoding result like 'ummmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm'. This happens with several words like "yeah" giving "Yeahhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh"

The result is not deterministic and for the long "umm", I will sometimes get "umm" and in these cases the audio file decodes faster than real time (audio file is 3 seconds, decoding time is <1 second), but when I get the long result, the utterances consistently take a longer time to decode than the audio file length (audio file is 3 seconds, decoding takes closer to 4 seconds).

Is there a way to supress the repeated letters and let whisper know it should output just the shorter word (i.e. always decode "umm" and "umm" regardless of the length"?