Headphone Check

Authors: Kevin J.P. WoodsMax H. SiegelJames TraerJosh H. McDermottRay GonzalezKelsey Allen
Updated: Tue 02 June 2020
Source: https://github.com/mcdermottLab/HeadphoneCheck
Type: JavaScript
Languages: N/A
Keywords: auditionexperimentstimulipure-tone
Open Access: yes
License: BSD-2 Clause and BSD-3 Clause
Documentation: https://github.com/mcdermottLab/HeadphoneCheck/blob/master/README.md
Publications: Woods, K.J.P., Siegel, M.H., Traer, J. & McDermott, J.H. (2017). Headphone screening to facilitate web-based auditory experiments. Attention, Perception & Psychophysics. 79: 2064-2072. DOI 10.3758/s13414-017-1361-2
Citation: Woods, K.J.P., Siegel, M.H., Traer, J. & McDermott, J.H., Gonzalez, R., Allen, K. (2017). Headphone Check: Headphone screening to facilitate web-based auditory experiments. Github. https://github.com/mcdermottLab/HeadphoneCheck
Summary:

As a screening task, it is intended to precede the main task(s), and should be placed at or near the beginning of an online experiment. Participants who pass are allowed through to the remainder of the experiment, but those who do not pass should instead be routed to an ending page and must leave the experiment after screening. The task is a 3-AFC "Which tone is quietest?" task with 200Hz pure tones. Unbeknownst to the participant, a random one of the tones is in antiphase across the stereo channels, resulting in heavy attenuation only when heard over loudspeakers (but not over headphones). This results in very poor performance if the task is attempted without headphones.