PPCGeeks - Crisper Sound app for voice calls?

I work at verizon so I see all ins and outs of many different devices and operating systems. One thing that I think would be very useful is an app that can change the EQ of the earpiece during a call. For instance on blackberry's you can chose to enhance call audio, by either setting it for normal, bass boost, or treble boost. Most my calls have alot of bass in them and is hard to hear words clearly. I would love to have a simple app that I can turn the treble up so I can hear a little more crisp.

Anything already out there that Im just not aware of? Or who would be interested in taking this task on...

Thanks