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
A Hybrid Warped Linear Prediction (WLP) AAC Audio Coding Algorithm
We propose a hybrid warped linear prediction (WLP) AAC audio coding algorithm. The proposed algorithm employs a warped linear prediction (WLP) processor to construct a perceptual pre- and post-filter for the MPEG-4 AAC. The WLP residual is applied to the MDCT filterbank and the signal-to-mask ratio (SMR) of the corresponding block is modified to set a masking threshold for the WLP residuals. In the decoder, the reconstructed residual signal is passed to a modified WLP synthesis filter to restore the audio signal. Subjective tests show that the proposed audio codec operating at 50kbps has comparable perceptual quality to the conventional MPEG-4 AAC operating at the 58kbps.
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.