Detection and Lateralization of Sinusoidal Signals in Presence of Dichotic Pink Noise

Laine P, Lehtonen HM, Pulkki V, Raitio T. Detection and Lateralization of Sinusoidal Signals in Presence of Dichotic Pink Noise. In: AES Convention 122. Audio Engineering Society; 2007. Paper 7113. Available from: https://aes.org/publications/elibrary-page/?id=14098

@inproceedings{Laine2007_14098,
  author = {Laine, Petteri and Lehtonen, Heidi-Maria and Pulkki, Ville and Raitio, Tuomo},
  title = {{Detection and Lateralization of Sinusoidal Signals in Presence of Dichotic Pink Noise}},
  booktitle = {AES Convention 122},
  note = {Paper 7113},
  year = {2007},
  month = may,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=14098}
}

TY  - CPAPER
TI  - Detection and Lateralization of Sinusoidal Signals in Presence of Dichotic Pink Noise
AU  - Laine, Petteri
AU  - Lehtonen, Heidi-Maria
AU  - Pulkki, Ville
AU  - Raitio, Tuomo
T2  - AES Convention 122
M1  - Paper 7113
PY  - 2007
DA  - 2007/05/06
UR  - https://aes.org/publications/elibrary-page/?id=14098
PB  - Audio Engineering Society
LA  - en
AB  - This paper investigates the ability to lateralize low-frequency sound in presence of interfering dichotic noise. This is addressed by measuring the detection and lateralization thresholds of four sinusoidal signals (62.5, 125, 250, and 500 Hz) in presence of uncorrelated pink noise in headphone listening. In lateralization test the signals were positioned to left or right by delaying either of the headphone channels by 0.5 ms. The results show that the lateralization threshold does not depart from detection threshold at frequencies 250 and 500 Hz. Interestingly, below 250 Hz the lateralization threshold rises fast, and at 62.5 Hz, the signal has to be amplified 18 dB from detection level before being lateralized correctly. This suggests that low-frequency ITD decoding mechanisms are easily distracted by random changes in signal phase. This explains at least partly why the direction of subwoofer can not be detected easily in surround sound listening of broad-band signal.
ER  -