Forensic audio engineer required. Approx 3 hrs off audio which requires an experienced sound person to remove as much back ground noise as possible, clean and have voice and any conversation so it is clearly audible. I have a sample .wav file of about 30 seconds. Applicant which is able to return this file in cleanest and most audible state will get the job. I don't mind paying a reasonable hourly rate if job is done ASAP and returns with results.