Über die Abhängigkeit der Mithörsdiwellen von der interauralen Phasenlage des Testschalls

The masked threshold of binaurally presented stimuli depends on the interaural phase relation of the test signal for a given homophasic masker. This relationship can be described by the level difference between the masked thresholds of a homophasic and an interaurally phase-shifted test signal. In the present paper the influence of the time function of both the maskee and the masker as well as the level of the masker is being investigated. Concerning the binaural masking level difference the results prove that sinusoidal and narrow band test signals, and narrow band and broad band maskers, respectively, are equivalent. It is found that the threshold sensitivity ΔI/I of a phase-shifted test signal being a function of the bandwidth is formed in a similar way as that of a homophasic test signal. Deviations occur for the case when the frequency of the maskee lies outside the frequency range of the masker.