AES E-Library

High Quality Sound Coding at 2.5 Bit/Sample

The algorithm described in the paper allows a reduction of the bit rate needed for coding CD-quality signals to 2.5 bit/sample and still gain in subjective quality when compared with other known algorithms for high quality sound coding. Coding signals with a very sharp rise in amplitude (e.g. triangle or glockenspiel) induces short (e.g. 10ms) preechoes which are audible in some cases. This problem of all frequency domain coding algorithms can be reduced using a special "post filtering" algorithm together with a few bits of additional side information. Transform-based coding algorithms need overlapping and windowing of the input data blocks. With a new technique called time domain aliasing cancellation (TDAC) full overlapping of input blocks is possible without increasing the data rate needed for transmission.

 

Author (s):
Affiliation: (See document for exact affiliation information.)
AES Convention: Paper Number:
Publication Date:
Session subject:
Permalink: https://aes2.org/publications/elibrary-page/?id=4824


(491KB)


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 Join the AES. If you need to check your member status, login to the Member Portal.

Type:
E-Libary location:
16938
Choose your country of residence from this list:










Skip to content