Enhance In-Car Conversation Quality

I need a skilled audio engineer to improve the quality of in-car conversations recorded on a voice recorder. The primary challenge is reducing engine and road noise, as well as music interference.

Key requirements include:
- Reducing background noise
- Enhancing both volume and clarity of conversation

Ideal skills and experience:
- Proficiency in audio editing software
- Experience with noise reduction techniques
- Ability to work with voice recorder audio files

Please provide samples of similar work.