December 2007
Intermediate to advanced
224 pages
7h 18m
English
book
Spatial Audio Processing: MPEG Surround and Other Applications
by Jeroen Breebaart, Christof Faller
Content preview from Spatial Audio Processing: MPEG Surround and Other Applications
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
5.3 Relation to BCC
The parametric stereo algorithm is based on identical principles as BCC and spatial audio coding techniques. The differences rely in certain implementation aspects and engineering choices.
- Parametric stereo supports dynamic segmentation of the incoming audio, to enable bit-rate scalability (by modifying the parameter update rate) and improve the coding efficiency. Signal parts that are reasonably stable in terms of spatial properties can be encoded with low parameter update rates (i.e., long analysis frames), while strong spatial dynamics can be accounted for as well by a temporarily higher update rate.
- A slightly different ICC, ICTD parameterization is used to allow parameterization of out-of-phase signals. The ICTD is replaced by an inter-channel phase difference (ICPD), which has the additional advantage of a lower estimation complexity in the encoder.
- A dedicated filterbank was designed that has a lower computational complexity and memory requirement than FFT-based methods, and which allows for efficient integration with aacPlus.
- An alternative decoder-side synthesis method has a low complexity, and allows for synthesis of out-of-phase output signals.
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.