Ai speech to text transcription engine

Job ID: 31525868

Budget: $8 – $15 USD

Hi.
I am looking for a developer who has experience with Python Open source transcription modules to convert audio to text. (speech-to-text).

1: Each Audio file will have English, Arabic, Urdu, Hindi mixed.
2: I am also okay if you can convert English words only and ignore other language words!
3: It is not necessary to convert the whole sentence. instead, I am okay with converting word to word.
4: I need it to detect bad words in an Audio file. The bad words are in English only. Like Facebook, Twitter, etc.

I am okay with both desktop (windows) OR server solutions with API.

I don't need google/AWS etc paid transcription API. I am looking for open source and free.

The server should not consume high CPU or RAM. As I have thousand of minutes to be translated every day.
it should not take a very long time to translate a 30 minutes file.
The accuracy should be around 50%.

This is an hourly project.