Please read the following as they contain most of your answers:
- "quick reference" (F1) tab on solo voice instructions
- the resources/speech/Notice file
As you will read there, it is a good idea to try the loudest microphone level you can get without distortion.
nocusuzo wrote in Sat May 26, 2018 11:07 pm:Usually I spell all callsign letters and numbers, for example,
KQA7473 is
Kilo Quebec Alpha Seven Four Seven Three, but [...]
Am I doing it wrong by spelling all characters in a callsign?
Yes, callsigns are not meant to be spelt out. The program is recognising the best possible match
within expected phraseology, which for callsigns is
either an airline callsign and a flight number, or a tail number. Your example should be called "Kenya seven four seven three", or "Kenya seventy-four seventy-three".
I guess I could add the possibility of recognising commercial flight callsigns from spelt-out names, as it is not standard but sometimes (though rarely) used as fallback to work around confusion. But it is not yet implemented, so will currently fail if you do so.
nocusuzo wrote in Sat May 26, 2018 11:07 pm:It seems to understand fluid things, for example "cleared for takeoff" or "cleared for ILS".
While pronouncing the characters should I do it fast or stop after each character?
Clear-cut answer, quoting the quick ref: "Do not break, backtrack or silence too much between your words. Try to have your message flow from start to end."
Yes, you can in theory adjust it entirely to your pronunciation, but be prepared for a little work if you try. As I did not like to serve only Americans (it is
only I don't like, not
Americans lol), I implemented an option to provide a custom acoustic model for recognition, see solo system settings. If you are ridiculously lucky, you find one for "English with your accent" (or even yet: "... for aviation phraseology") on the internet. But since this is unlikely, the solution is to train your own model. At this point I have to let you read and follow the PocketSphinx documentation on training acoustic models, but the bottom line is that you need a relevant (thus significantly long) set of instructions for which you record your voice.
So it is up to you, but if you ever do that, please share!