ATTENTION GLYPH HUNTERS: NEED HELP

Ok, I need anyone or everyone who back before the game released, put together clues and sound files in the bulletins to put together the hidden waypoint codes. What is it called when you get a sound file, and then convert it some how, and it made a picture. I don’t know if this will be removed or not because its off topic, but I am in another hunt for an easter egg, so I needed some help. Thanks everyone.

If you need decoding help try the Section 3 http://client00.chat.mibbit.com/?server=irc.webchat.org&channel=#halo4arg

Please post what you have Operative.

You’re most likely interested in the spectrogram of the sound file. You can check out something like Sonic Visualizer or even just use Audacity, both have the ability of showing you a spectrogram.