hello people....

i am not a musition, just plays (and build didgeridoo)......
i am looking for a FFT analythis software (for mac) that can show me the decibels according to freqancy - somthing like showed in this link: http://www.didgeridoo-physik.de/E/index.htm
i tried to make text file graph to visualise it without sending you to a link but when i preview this massage i see that the graph compressed to the left, but i put it anyway:


Db
|
| /\
| / \
| / \ /\
| /\ / \ | |
| / \ /\ | | / \
| | | | | / \ /
| / \ / \ /
| / \ / \ /
|_/____________________________________ Frequency
0 50 100 150 200 250 300 350 [ Hz]


i want to be able to "see" on screen if the sound of the didge is rich - many ovetones.

i hope somone knows.... (if you know just for pc, please weite too) .....
thanx