Audiophile required to do post production on a 500 word English vocabulary

I have 500 audio files and 1,000 video files (500 front and 500 side views) for a total of 1,500 files that need the audio post produced to make every word sound like it was recorded in a studio. No hollow sounds or highs and lows. This audio and video content is used for English as a Second Language pronunciation practice and therefore must be perfectly produced.