Wow!  Options overload!  Thanks everybody!

Anderton

scook
IDK the best way, I am pretty lazy so I would dial it up using zplane Elastique Pitch. Should do a pretty good job with 15 cent change.

FYI that's the algorithm included in recent versions of Sound Forge.

I was not sure the bundled Elatique Timestretch used the same algorithm. The Timestretch plug-ins only works offline. Elastique Pitch is a real-time plug-in. If I did not have Elastique Pitch, I would probably resort to the Timestretch plug-in bundled in SoundForge.

Offline processing is fine with me.  Looks like Sound Forge 10 has the Zplane Elastique Pitch tool.

If you have SoundForge 10, the elatique Timestretch plug-in should be available in SONAR. SF10 includes a 64bit version which will load into 64bit SONAR as a DX plug-in. The Timestretch plug-in does both time and pitch shift.

scook
If you have SoundForge 10, the elatique Timestretch plug-in should be available in SONAR. SF10 includes a 64bit version which will load into 64bit SONAR as a DX plug-in. The Timestretch plug-in does both time and pitch shift.

I found the Elastique time stretch in Sound Forge 10 and it works beautifully.  For some reason I can't see the DX from Sonar, though.

I installed SF10 a few years ago. IIRC, the 64bit plug-ins did not install by default. There was a check box or extra step to get the 64bit plug-ins installed. I checked my SF10 installer directory, unlike the iZotope effects, the 64bit plug-ins do not have a separate installer. The plug-ins came with the SF10d.0 update. I am running SF10.0e. Here is an except from the 10.0e Readme:
Notable fixes/changes in Version 10.0d

Updated Noise Reduction, Acoustic Mirror, Wave Hammer, and élastique Timestretch for 64-bit compatibility when used with Vegas Pro 12.0.