AES Convention Papers Forum

Bit Rate Requirements for an Audio Codec for Stereo, Surround and Immersive Formats

Document Thumbnail

This paper describes a comprehensive study on the sound quality of the Opus codec for stereo, surround, and immersive audio formats for music and cinematic content. We conducted three listening tests on Opus encoded stereo, 5.1 and 7.1.4 channel content taken from music, cinematic, and EBU files encoded at bitrates of 32, 48, and 64 kbps per channel. Current Opus encapsulation in Ogg does not support 7.1.4 with stereo pairing. Hence, we propose a new stereo pairing schema to accommodate 7.1.4 content in Opus with joint stereo encoding. Results indicate that a bitrate of 64 kbps per channel or higher is required for transparency in stereo, but 48 kbps per channel may be sufficient for 5.1 and 7.1.4 audio formats.

AES Convention: Paper Number:
Publication Date:

Click to purchase paper as a non-member or you can login as an AES member to see more options.

No AES members have commented on this paper yet.

Subscribe to this discussion

RSS Feed To be notified of new comments on this paper you can subscribe to this RSS feed. Forum users should login to see additional options.

Start a discussion!

If you would like to start a discussion about this paper and are an AES member then you can login here:

If you are not yet an AES member and have something important to say about this paper then we urge you to join the AES today and make your voice heard. You can join online today by clicking here.

AES - Audio Engineering Society