AES E-Library

Efficient Compression of Oversampled 1-bit Audio Signals

Sigma delta modulation is a popular technique for high-resolution analog-to-digital conversion and digital-to-analog-conversion. It has been considered as a new format for recording and storage of audio signals. To reduce the storage capacity, a lossless compression scheme can be applied. However, this scheme offers less than 3:1 compression. This may not be sufficient for storage on media such as a Digital Versatile Disk (DVD). We propose a scheme based on a technique known as bit-grouping. Errors are introduced in the compression, but they are confined to frequencies outside the audible range. Our studies indicate that bit-grouping allows one to achieve greater than 4:1 compression.

Authors: Reiss, Joshua D.; Sandler, Mark B.
Affiliation: Electronic Engineering, King’s College, University of London, Strand, London, UK
AES Convention:111 (November 2001) Paper Number:5472 Import into BibTeX
Subject:Signal Processing

Click to purchase paper 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 $20 for non-members, $5 for AES members and is free for E-Library subscribers.

Learn more about the AES E-Library

E-Library Location: (CD aes18)   /pp2001/pp0112/111028.pdf

Start a discussion about this paper!