Hi,
Im looking for a frequency meter software that could open audio files (aiff, mp3, wav) in my HD so I could measure variations in pitch in the notes in a given melody.
Mac G5/1.8, MacOS 10.4.11, 2 GB RAM.
Motu 828Mk2 audio firewire interface.
Thank you so much for any help I can get.

sounds like it should be easy right? it's not, really. but look at Melodyne, AutoTune, and there's a Waves tuning plug in too. Melodyne is doing some remarkable pitch to visual work.

the software generally focuses on tuning, not simple inspection.
any other ideas anyone?

Thanks for responding. I have Melodyne. What I really need is a pitch analysis tool so I could compare variations in some musical parameters like vibrato, portamento, tremolo, etc.in a given melody played by different musicians. I think it should be a kind of oscilloscope, which I have (Spectre), but only opens audio files outside the Mac.

http://www.sonicvisualiser.org/

This should be what you are looking for!

Thank you so much. sonicvisualiser seems very promising, and it's free. I'll test it.