Abstract
This study examines the loudness of bandpass noises with center frequencies of 250, 500 and 1000Hz while changing the autocorrelation function (ACF). The bandwidth of the source signal was altered with a 2068 dB/octave sharp filter to control the ACF of the source signal. The scale values of loudness were obtained using a paired-comparison method. It is shown that the loudness of the bandpass noises inside the critical band is not constant. The loudness of the pure tone is greater than that of sharply filtered noises. The loudness of the bandpass noises increases with increasing effective duration of the ACF (τe) of the source signal.
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