Subjective preference in relation to objective parameters of music sound fields with a single echo

Subjective preference tests with a simulated single reflection in an anechoic chamber were conducted in order to get a knowledge of the preferred properties of sound fields. The degree of preference in relation to a long-time autocorrelation function of source signal and the interaural cross correlation of the sound field is discussed here. The preferred time delay gap between the direct sound and the first echo can be determined by the coherence of autocorrelation function and the amplitude of the echo. The preferred echo direction to a listener may be obtained by minimizing the interaural cross correlation which relates to the ’’subjective diffuseness.’’ Results of the autocorrelation function, which was measured with an A-weighting filter, and the interaural cross correlation are presented for several music motifs. convection velocity and wavelength. The vortex strength, convection