Newbee Question on noise cancelation equipment

[TONYJEFFS]

In article <19970805205800.QAA02761 at ladder02.news.aol.com>,
prenna2537 at aol.com (PRenna2537) writes:

>
>Hope someone can help!!!
>Working on a noise cancelation project.  Looking for equipment (Hopfully
>pc interface or program) that will allow recording and playback of
sounds,
>yet allow phase changing.  Any thoughts or other places to look???
>Please E-mail PRenna2537 at aol.com

This sounds interesting.
I subscribe to Alt support tinnitus, and this is often proposed at a
speculative future treatment.
What is the basis of your project? 

Thanks,

Tony
TonyJeffs
Liverpool
UK