Portal de Periódicos da CAPES

Phase effects in masking related to dispersion in the inner ear

1986; Acoustical Society of America; Volume: 80; Issue: 6 Linguagem: Inglês

10.1121/1.394327

1520-9024

Bennett K. Smith, Ulrich K. Sieben, Armin Kohlrausch, Manfred R. Schroeder,

Underwater Acoustics Research

Phase effects in masking experiments using multitone maskers are usually associated with strong variations in the masker envelope. In this article, psychoacoustic experiments with such maskers that lead to phase-dependent threshold variations of up to 20 dB, although the phase transformation leaves the envelope unchanged, are described. However, after filtering the maskers with a realistic basilar membrane model, the envelopes are different owing to the models phase-dispersive properties. Comparison of model outputs with the experimental results reveals a strong correlation between the two for a wide range of parameters, provided one makes the additional assumption that the ear has a minimum integration time of a few milliseconds.