This contains a variety of items. Please consult the publications, or contact us for more details!
The filesnames desribe the number of transport channels (TCs) and the spatial covariance matching technique, where EstE does not require any additional meta-data, and is hence proposed for compression scenarios.
The others may be considered for upmixing scenarios.
There are binaural versions of all items included.
The listening test items of [inReview2024] can be accessed here.
In the publication [WASPAA2023] we explored different adaptive mixing variants of a model based post processing to match the spatial covariance of the coded output to the input.
We have shown that this technique can reduce coding artefacts, even without requiring additional side-information over the standard HO-DirAC parameters.
Finally, in the publication [inReview2024], we are presenting a full codec including perceptual coders on the audio transport channels and metadata coding.
As additional material, a perceptual model based on energy-weighted ViSQOL scores shows a comparable trend as observed in the perceptual listening test.
The next plots show a bit more insight on the spatial spects.