APL - Applied Phychoacoustics Laboratory


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Το πρόσφατο βιβλίο του πανεπιστημίου.
3D Audio (Perspectives on Music Production) 1st Edition

Και ξεκινάω με τη πρόσφατη μελέτη.

1) A new journal paper "Subjective evaluations of three-dimensional, surround and stereo loudspeaker reproductions using classical music recordings" by Callum Eaton and Hyunkook Lee, has been published in Acoustical Science and Technology. It's Open Access, available from https://doi.org/10.1250/ast.43.149
The paper investigated how perceived qualities degrade when downmixing original 3D recording of 22.2 to 9.1, 5.1 and stereo. This paper shows that downmix quality of 3D classical recordings significantly depend on microphone techniques and 5.1 can be as good as 9.1 depending on the technique used. Another interesting finding was that Overall Listening Experience (OLE) was strongly associated with Listener Envelopment (LEV), whereas Presence (sense of being there) was most related to Overall Tonal Quality (OTQ). When discussing Presence in immersive audio, we may be often obsessed with spatial aspects, but our results suggest maintaining a good tonal quality (e.g. free from comb-filtering when downmixing) would ensure a higher sense of being there too.

2) A new paper that we collaborated on with Dr Slawek Zielinski and Pawel Antoniuk of Bialystok University has been published on EURASIP Journal of Audio, Speech and Music Processing. The paper is about the use of machine learning for binaural front/back scene detection, comparison between various feature engineering methods exploiting psychoacoustic models and a Convolutional Neural Network (CNN) approach. Open access.

3) Two papers we presented at the Immersive and 3D Audio conference (I3DA) in Sep are now available on IEEE Explore.

1. Lee, Johnson and Zielinski, "The Effect of Direct-to-Reverberant Energy Ratio (DRR) on Front-Back Confusion in Binaural Reproduction". https://ieeexplore.ieee.org/document/9610831
Presentation slides: https://doi.org/10.5281/zenodo.5728222
Presentation video:
2. Pawlak, Lee, Makivirta and Lund, "Subjective Evaluation of Spatial Analysis and Synthesis Methods Using Different Microphone Arrays"
Presentation slides: https://doi.org/10.5281/zenodo.5728230
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