Detection of simultaneous modulation of interaural time and level differences: Effects of modulation rate and relative phase (L)

Human and Information Science Laboratory, NTT Communication Science Laboratories, NTT Corporation, 3-1 Morinosato-Wakamiya, Atsugi, Kanagawa 243-0198, Japan.
The Journal of the Acoustical Society of America (Impact Factor: 1.5). 07/2012; 132(1):1-4. DOI: 10.1121/1.4728199
Source: PubMed


The binaural system is known to be sluggish, i.e., unable to track modulations in interaural parameters even at a relatively slow rate. The present study evaluated the binaural system's sensitivity to modulation phase rather than to modulation magnitude. The detectability of simultaneous modulations in interaural time and level differences with various relative phases were measured. It was found that for modulation rates up to 10-20 Hz, the detectability varied with the relative phase. This indicates that information about higher rates is lost at or below the level of cue integration.

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