A Subjective Evaluation of the Minimum Audible Channel Separation in Binaural Reproduction Systems through Loudspeakers

Parodi YL, Rubak P. A Subjective Evaluation of the Minimum Audible Channel Separation in Binaural Reproduction Systems through Loudspeakers. In: AES Convention 128. Audio Engineering Society; 2010. Paper 8104. Available from: https://aes.org/publications/elibrary-page/?id=15401

@inproceedings{Parodi2010_15401,
  author = {Parodi, Yesenia Lacouture and Rubak, Per},
  title = {{A Subjective Evaluation of the Minimum Audible Channel Separation in Binaural Reproduction Systems through Loudspeakers}},
  booktitle = {AES Convention 128},
  note = {Paper 8104},
  year = {2010},
  month = may,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=15401}
}

TY  - CPAPER
TI  - A Subjective Evaluation of the Minimum Audible Channel Separation in Binaural Reproduction Systems through Loudspeakers
AU  - Parodi, Yesenia Lacouture
AU  - Rubak, Per
T2  - AES Convention 128
M1  - Paper 8104
PY  - 2010
DA  - 2010/05/06
UR  - https://aes.org/publications/elibrary-page/?id=15401
PB  - Audio Engineering Society
LA  - en
AB  - To evaluate the performance of crosstalk cancellation systems the channel separation is usually used as parameter. However, no systematic evaluation of the minimum audible channel separation has been found in the literature known by the authors. This paper describes a set of subjective experiments carried out to evaluate the minimum amount of channel separation needed such the binaural signals with crosstalk are perceived to be equal to the binaural signals reproduced without crosstalk. A three alternative-forced-choice discrimination experiment, with a simple adaptive algorithm with weighed up-down method was used. The minimum audible channel separation was evaluated for the listeners placed at symmetric and asymmetric positions with respect to the loudspeakers. Eight different stimuli placed a two different locations were evaluated. Span angles of 12 and 60 degrees were also simulated. Results indicate that in order to avoid lateralization the channel separation should be below -15dB for most of the stimuli and around -20dB for broad-band noise.
ER  -