Transcoding of Dynamic Range Control Coefficients and Other Metadata into MPEG-4 HE AAC
With the introduction of HE AAC (also known as aacPlus) into several new broadcasting systems, the topic of how to best encode new and transcode pre-existing metadata such as dynamic range control (DRC) data, program reference level and downmix coefficients into HE AAC has gained renewed interest. This paper will discuss the means of carrying metadata within HE AAC and derived standards like DVB, and present studies on how to convert metadata persistent in different formats into HE AAC. Listening tests are employed to validate the results.
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.