Clean Background Noise From Recordings

I have several environmental voice recordings that are hard to follow because of persistent background noise. My goal is simple: make every spoken word easy to understand. Here’s what I need: • Careful noise reduction that removes hiss, hum, traffic or wind without making voices sound tinny... (Budget: $10 - $30 USD, Jobs: Audio Editing, Audio Engineering, Audio Mastering, Audio Processing, Audio Production, Audio Services, Sound Design, Voice Talent)