In my last test I decided that the the dm-50 was a small step up over the internal mic in terms of motor noise, and a huge step up in audio quality. My goal now is to remove as much motor noise as possible without sacrificing the good audio quality.

Using vegas and the noise reduction 2 filter, I filmed in stereo 1 mode in a quiet room. Using that silence (the recorded motor noise) as my noiseprint, I then had the noise reduction plugin remove that sound. I played with the settings some and listened to what was being removed until I got something I liked. The recording of my voice sounds identical to me. I saved this as a preset, and if all goes according to plan, the plugin can just be turned on, choose the preset, and motornoise is gone.

My settings were as follows:

Mode 3, Reduce noise: 100db
Noise bias: -5.2
Attack speed: 90
Release speed: 90
Windowing: 512
Windowing overlap: 67
High-shelf not checked.