Abstract
Masking of one modulation frequency by another was measured in a 3IFC task. The carrier was broadband noise at a spectrum level of 30 dB SPL. This was amplitude modulated by a sinusoidal masker or a sinusoidal signal plus a sinusoidal masker. Masker modulation depth was fixed at 25% or 50%, and masker frequencies ranged from 2–800 Hz. Threshold signal modulation depth was measured for signals of 4, 16, 100, and 400 Hz. The masking functions showed broad tuning for modulation frequency consistent with that seen by Bacon and Grantham [J. Acoust. Soc. Am. 85, 2575–2580 (1989)]. For example, for a signal modulation frequency of 100 Hz, the amount of masking only varied over 5 dB for masker modulation frequencies from 40 to 140 Hz. Thresholds were phase dependent for masker frequencies of half, equal to, or twice the signal frequency. For equal signal and masker frequency, thresholds were consistent with detection of differences in envelope power, independent of signal/masker phase. Results are discussed in te...
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.
