The new update released by FS2Crew leads their 777 Edition for P3D4 to go to version 3.2. It allows the users to set their speech recognition setting to their local English setting instead of English US only.
The second fix is in case that your audio drops, you can now press the Audio Test/Reset button.
“3.2 CHANGE LOG FOR THE 777:
1. Speech recognizer setting can now be set to ENGLISH – UK, ENGLISH – AU, ENGLISH – CA, ENGLISH – IN. You are no longer limited to ENGLISH – US. This is a big plus for users from outside the US.
2. Audio reset system updated. Just press the audio test/reset button to reset the audio system. Press this button if your audio ever drops.”