noob question : i want to make delay effect on my ios application

[superbook5]

I want to make delay effect to .wav file . Now , i can get samplerate and numsample of .wav file ... i try to put delay algorithm to it ( just like in math lab ) ... and i only got something like a robot sound not delay effect ...

some guide pls

[planeth]

You probably won't find a "guide" for that. You have to read the wave header, there you find everything
http://www.topherlee.com/software/pcm-t ... ormat.html