Async Record, Filtering List, minimum Audio Length

[kantheerava]

Is your feature request related to a problem? Please describe.

1. Recording Audio takes 3-4 seconds, Upload takes 6-7 seconds. Can Upload be done in async manner? User can move to next word, while upload+success/failure toast message can happen in background.
2. Filter is not removing Wiktionary Words that already have audio in Wiki Commons. This is very frequent in Kannada and Telugu. Code has almost no documentation to locate and change this logic
3. Forcing minimum 2 second length isn't helping for monosyllables & single letter words. I'm trying to add all the kaagunita akshara's and they are nearly 1200 such words/letters. Pl consider reducing minimum audio length to 1 second.

Describe the solution you'd like

1. Allow 1 second as minimum audio length to save monosyllables & kaagunta akshara's
2. Allow Async Recording, i.e., allow user to go to next word, without waiting for word to be uploaded fully, saves lot of time ==> Allows User to remain in the zone/flow
3. Pl provide the place where Filtering is done. Filtering is not working, If possible, I wish to fix that.

Describe alternatives you've considered
The painful As-Is :(

Additional context
None.