capture musical note with jack :D

[gra]

ok i'm not die
i develop an application , i'm the bassist of a group, but i'm to start , in group.
my questions is :
can be create a tuner? 

the tuner traslate sound in imput...
if i create this, it can be use for tune and key pressure 
i try to find tuner examples with gm

[TheExDeus]

I once made a mixer in ENIGMA using the FMOD sound system. It's quite powerful, so you should be able to create anything you need in there.

[gra]

TheExDeus, can you spend more words? 
i try to see FMOD sound system.
Thanks for response , if i create a bass rocksmith game i post the game there, if my collaborator wwant i post it with source

[Goombert]

Hey gra, the basic sound functions do support pitch, so that might help in making musical notes 

[gra]

i don't have find nothing on basic sound pitch function, but this function are in c++ or gml?
thanks for the responses
EDIT
yes i find it
http://gmc.yoyogames.com/index.php?showtopic=568542
i control if this function are implemented

[DarkAceZ]

I implemented a sound_speed a while back, but it changes both sound pitch and tempo... so it's probably not helpful here.

[Goombert]

You should add sound_tempo then so that it can be done seperately as well.

[gra]

the sound tempo and sound value in sound tempo for calculate note (like guitar tune)
more simple i want check height of sound wave in time
any ideas?
is ,the library , only solution? i try library solution if yes
EDIT

I implemented a sound_speed a while back, but it changes both sound pitch and tempo... so it's probably not helpful here.

no help , but good to know it