I create screencasts for companies. Making the audio noise/hum-free really makes a screencast more watchable.

I’m blogging a screencast tutorial series but I’m a few posts away from going into audio techniques.

However – there’s an easy fix for you – export the audio, load the audio into a tool like Audacity (open-src), sample a section of noise when you’re not speaking to train the denoiser, use the denoise tool, it’ll remove the hum leaving you with a pretty clean voice, add the audio track back into the video in place of the original track

Quicktime Pro can extract/import audio if you lack other tools.

I’m happy to advise if you want to email me, I work to promote screencasting so the technique is more widely used, I’m always happy to offer advice.

Cheers,
Ian.

The design is also very original, although I have to agree on a point made on the other post about using images straight from Google search. I presume permission had been asked after the video was made.

The drawings coming out of Mike’s phone are very cool; it’s just a shame they are reversed. The grid is also a nice touch.