This is a tool for removing from audio recordings taken in an MRI scanner. It uses the precise regularity of the scanner noise to cancel it.
This was built and last used in Visual Basic 6.
Take a look at this manuscript for the description of the algorithm
Cusack, R., Cumming, N., Bor, D., Norris, D., & Lyzenga, J. (2005). Automated post-hoc noise cancellation tool for audio recordings acquired in an MRI scanner. Human Brain Mapping, 24(4), 299-304. doi: 10.1002/hbm.20085.
http://s3.amazonaws.com/cusacklab/html/pdfs/cusack_et_al-soundcancellation.pdf