Abstract
The phase angle of addition α between the brief (20–30 ms) tonal signal and a 500‐ms, 60 dB SPL tonal masker was varied from 0° to 135° in both forward and simultaneous masking. Both diotic (MoSo) and dichotic (MoSπ and MoSm) listening conditions were investigated. In all conditions the frequency of the signal and masker was 500 Hz. In simultaneous masking, thresholds varied as a function of α in both diotic and dichotic conditions. However, thresholds in the diotic conditions were consistently different from those in the dichotic conditions—i.e., there were masking‐level differences (MLD) at each value of α tested. In forward masking, thresholds were independent of α in both diotic and dichotic conditions. However, dichotic thresholds remained below the diotic thresholds, yielding MLD's of 3 to 6 dB. Thus, in forward masking, there is a clear effect of interaural phase on signal detectability, while the phase relation between signal and masker in one ear does not appear to influence signal detectability. These results will be discussed in relation to assumptions concerning those aspects of the masker which are preserved in the nervous system in a forward masking condition. [Work supported by NSF.]
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
