With the increasing popularity of immersive audio, using legacy tools for these new formats can be challenging. This paper presents an overview of how to utilize the Opus audio codec for object-based audio. We reviewed the performance of Opus using two different bit-allocation strategies: a vanilla method that uses the same bitrate for each object, and a joint allocation method that distributes the total bitrate among objects using their perceptual importance. The proposed joint allocation outperformed the vanilla method at half the total bitrate, and achieved an "Excellent" score during MUSHRA testing at 480 kbit/s for content with 20 objects.
(See document for exact affiliation information.)
https://aes2.org/publications/elibrary-page/?id=22279
(939KB)
Click to purchase paper as a non-member or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member Join the AES. If you need to check your member status, login to the Member Portal.
