Gram-Schmidt-Based Downmixer and Decorrelator in the MPEG Surround Coding
MPEG Surround (MPS) coding is an efficient method for multichannel audio coding. In an MPS encoder, downmixing from multichannel signals into a less number of channels is an efficient way to achieve high compression rate. In decoder, an upmixing module combining with the decorrelator is the key module to reconstruct the multichannel signals. This paper considers the design of the downmixer and the decorrelator with the assistance of the Gram-Schmidt orthogonal process. The performance of the proposed algorithms in the downmixer and the decorrelator are verified through intensive objective and subjective quality measure.
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 and would like to subscribe to the E-Library then Join the AES!
This paper costs $33 for non-members and is temporarily free for AES members.