The transient steering decorrelator tool in the upcoming MPEG unified speech and audio coding standard

Achim Kuntz*, Sascha Disch, Tom Bäckström, Julien Robilliard, Christian Uhle

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

12 Citations (Scopus)


Applause signals are still challenging to code with good perceptual quality using parametric multichannel audio coding techniques. To improve the codec performance for these particular items, the Transient Steering Decorrelator (TSD) tool has been adopted into the upcoming Moving Picture Experts Group (MPEG) standard on Unified Speech and Audio Coding (USAC) as an amendement to the MPEG Surround 2-1-2 module (MPS). TSD improves the perceptual quality of signals which contain rather dense spatially distributed transient auditory events like in applause type of signals. Within TSD, transient events are separated from the core decoder output and a dedicated decorrelator algorithm distributes the transients in the spatial image according to parametric guiding information transmitted in the bitstream. Listening tests show a substantial improvement in subjective quality.

Original languageEnglish
Title of host publication131st Audio Engineering Society Convention 2011
Number of pages9
Publication statusPublished - 1 Dec 2011
MoE publication typeA4 Article in a conference publication
Event Audio Engineering Society Convention - New York, NY, United States
Duration: 20 Oct 201123 Oct 2011
Conference number: 131


Conference Audio Engineering Society Convention
CountryUnited States
CityNew York, NY

Fingerprint Dive into the research topics of 'The transient steering decorrelator tool in the upcoming MPEG unified speech and audio coding standard'. Together they form a unique fingerprint.

Cite this