Back in the Patch 4.7 Notes, we mentioned a new audio engine is coming your way. Basically, we're transitioning over to a new tool to control the voices, music and sound effects in League of Legends. We're still a few patches away from switching over, but since we'll be shipping files out over the next few releases, we wanted to let you know what to expect once the new engine is activated.
When we move to the new engine, there'll be subtle clarity improvements to the in-game sounds, proper support for Surround Sound and adjustments to how we implement stereo panning/imaging. You may also see slight performance gains with memory management.
The biggest gains will come further down the road: our new engine opens the door for us to explore more ideas for how we create and use sound effects, voices and music in League of Legends, allowing us to create a more expansive and immersive experience. We've grown a lot the past few years and hope to be playing League of Legends many more years from now. This change makes our game more scalable for the long term.
If you have any questions, we'll do our best to provide answers in this thread!