M. Morimoto
Environ. Acoust. Lab. Faculty of Eng., Kobe Univ., Rokko, Nada, Kobe 657, Japan
K. Iida
Kobe Univ., Rokko, Nada, Kobe 657, Japan
Matsushita Communication Industrial Co., Ltd., Japan)
The degree of interaural cross correlation is well known as a physical
factor for auditory source width ASW). But, how to measure it is not yet
described clearly. The degree of interaural cross correlation obtained by using
a dummy head with an artificial ear simulator cannot explain the results by
Barron and Marshall [J. Sound Vib. 77, 221--232 1981)]. But, the degree
obtained by using a dummy head without an artificial ear simulator can explain
the results. Furthermore, it is impossible to explain ASW of stimuli that
include the high-frequency components higher than about 1.5 kHz) even if the
latter degree is adopted. Finally, this paper proposes auditory processed
interaural cross correlation APICC) the degree of interaural cross correlation
obtained in consideration of the mechanism of binaural signal processing) as a
physical factor for ASW.