Audio Subband Coding with Improved Representation of Transient Signal Segments

Jörg Kliewer, Alfred Mertins


In this paper, we present a subband audio coding scheme with an attack-sensitive framing of the input audio signal, where the frame boundaries closely match both ends of the transient. Since each transient frame is processed as a symmetrically extended finite-length signal with a support-preservative MDFT filter bank, pre-echos can be almost completely avoided. Furthermore, the bit-allocation, which is calculated on a frame-by-frame basis, can be determined more accurately, because the calculation of the masking thresholds is carried out on signal segments with almost "stationary" energy distribution.

Original languageEnglish
Title of host publication9th European Signal Processing Conference (EUSIPCO 1998)
Number of pages4
Publication date01.01.1998
ISBN (Print)978-960-7620-06-4
Publication statusPublished - 01.01.1998
Event9th European Signal Processing Conference - Island of Rhodes, Greece
Duration: 08.09.199811.09.1998


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