Improved ITU and Matrix Surround Downmixing
Improvements to ITU and matrix surround downmixing are proposed. The surround channels are often mixed into the downmix with reduced gain to prevent that the resulting stereo signal is overly ambient. A method is proposed which allows to control the amount of ambience in the downmix independently of direct sound. In a conventional matrix surround downmix, ambience from the surround channels appears impaired (negatively correlated) . To address this issue, a technique is proposed which separates direct and ambient sound. Then, a matrix surround downmix is only applied to the direct sound, while ambient sound is treated like in an ITU downmix.
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.