I did a presentation this week where I put my audio recorder next to a projector. The audio of my voice is good but the recorder also recorded the regular fan noise of the projectors fan.
This job is simply to remove or reduce the volume of the fan noise so it is not distracting.
A sample of the 15 minute file is attached to this posting. If you can do the job, then I will send you the entire file to work on and you can send back to be as both a MP3 and WAV file (using dropbox).
If you can do this job right away, please apply and answer "what is 2+2" at the top of your cover letter so I know you read this.