Investigation of the impact of pink and white noise in an auditory threshold of detection experiment

Loy N, Bulla W, Chon SH. Investigation of the impact of pink and white noise in an auditory threshold of detection experiment. In: Express Paper. Audio Engineering Society; 2024. Paper 293. Available from: https://aes.org/publications/elibrary-page/?id=22750

@inproceedings{Loy2024_22750,
  author = {Loy, Nathanial and Bulla, Wesley and Chon, Song Hui},
  title = {{Investigation of the impact of pink and white noise in an auditory threshold of detection experiment}},
  note = {Paper 293},
  year = {2024},
  month = sep,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=22750}
}

TY  - CPAPER
TI  - Investigation of the impact of pink and white noise in an auditory threshold of detection experiment
AU  - Loy, Nathanial
AU  - Bulla, Wesley
AU  - Chon, Song Hui
M1  - Paper 293
PY  - 2024
DA  - 2024/09/27
UR  - https://aes.org/publications/elibrary-page/?id=22750
PB  - Audio Engineering Society
LA  - en
AB  - Many listening experiments employ so-called pink and white noise, including those to find the threshold of detection (TOD). However, little research exists that compares the impacts of these two noises on a task. This study was an investigation of the TODs at whole and third octave bands using pink and white noise. A modified up-down method was utilized to determine the TOD in white and pink noise at eight frequency levels using a dB boosted bell filter convolved with the original signal. Six graduate students in audio engineering participated. Subjects were presented with an unfiltered reference signal followed by a filtered or unfiltered signal and then were instructed to respond same or different. Correct answers decreased the filter boost while incorrect answers resulted in reversals that would increase the filter boost until the subject answered correctly. A trial would conclude when a total of ten reversals occurred. The filter boost levels of the last five reversals were collected to obtain an average threshold value. Results showed no significant differences between white and pink noise TOD levels at all frequency intervals. Additionally, the Just Noticeable Difference (JND) between the original and the boosted signal was observed to be 3 dB, consistent with existing literature. Therefore, it can be suggested that white or pink noise can be equivalently employed in listening tests such as TOD measurements without impact on perceptual performance.
ER  -