Perceptual Effects of Dynamic Range Compression in Popular Music Recordings - January 2014
Accurate Calculation of Radiation and Diffraction from Loudspeaker Enclosures at Low Frequency - June 2013
New Measurement Techniques for Portable Listening Devices: Technical Report - October 2013
An Introduction to the KOZ Scalable Audio Compression Technology
An overview of the high-quality, scalable, low-bitrate KOZ audio codec technology is presented. This new compression method grew out of developments in the control of chaotic systems that allow for the creation of broad spectral components with only a few bits of information. These elements are combined with a high resolution analysis of the audio signal that allows for the signal to be decomposed into peak-like or tonal objects, noise-like objects, transients, and modulations. Psychoacoustic models have been adapted to prioritize and quantize these objects, and the reconstructed signal is built up in layers from the prioritized objects. Metadata and built-in DRM are present in the digital filestream. The decoder is a very low-complexity algorithm that is implemented on a wide variety of portable devices such as cell phones in a software-only solution running on integer processors without DSP support. A demonstration of the quality, scalability and other features of the KOZ format will be given.
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.