music background loop .... how ?

Hi ...
just to ask someone please ......
What is the best way to use a music background, and
not consume to much resources.

in other words .....
how make a loop background sound ( on all level game ) , using few unity resources,
to not affect performance and fluidity of the game.

thanks a loot

 

The fasted method would be an uncompressed audio file, but regarding music that's not really an alternative because memory usage is way too high. I would not even load a compressed audio into memory, but stream it from disc. Depends on length and target platform.

You should be able to use a single, compressed audio stream (mp3 on iOS/android/osx, ogg on pc) without a noticeable performance loss. On iOS you can use hardware decoding for one audio stream.

What is your target platform? On PC everything should usually be using OGG compression without noticing a real performance drop.

If you want the music to play continuously without restarting on level load, you should have a look at http://unity3d.com/support/documentation/ScriptReference/Object.DontDestroyOnLoad.html. AudioListener and AudioSource should be flagged this way.