Perceptual Audio Coding Using a Time-Varying Linear Pre- and Post-Filter
Recently a new concept for perceptual audio coding was presented, which is based on a prefilter in the encoder and a corresponding postfilter in the decoder, both controlled by a psychoacoustic model. It enables individual selection of spectral and temporal resolutions for irrelevancy reduction and redundancy reduction. This paper addresses problems related to the efficient transmission of the filter parameters and presents techniques for efficient temporal and spectral modeling of masked thresholds using linear time-varying filters.:
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 $33 for non-members, $5 for AES members and is free for E-Library subscribers.