The relations of intensity Just Noticeable Difference (JND) to intensity for tone bursts maybe,depend on signal durations according to Jont B.Allen's [J. Acoust. Soc. Am. 102 3, 1997, 3628--3646.]. The intensity j...The relations of intensity Just Noticeable Difference (JND) to intensity for tone bursts maybe,depend on signal durations according to Jont B.Allen's [J. Acoust. Soc. Am. 102 3, 1997, 3628--3646.]. The intensity just noticeable differences for tone bursts with durations of 1 ms, 10 ms, 100 ms, 1000 ms, 5000 ms and 10000 ms were measured at different intensity levels of 20 dB, 30 dB, 40 dB, 50 dB, 60 dB, 70 dB, 80 dB, 90 dB, 100 dB. The data show that variance of Weber fraction (△I/I) with intensity is distinct from Riesz's result and SPIN theory, and that the relations between Weber fraction and intensity for signals of different durations are similar in spite of Weber fraction decreasing to asymptote with signal duration increasing. This means the difference of pulse measurement of intensity JND from Riesz's result and SPIN theory does not arise from the limited signal duration of pulse method and provides new cue for hearing research.展开更多
This paper addresses the JND（Just Noticeable Difference）change of auditory perception with synchronous visual stimuli.Through psychoacoustics experimentS,loudness JND,subjective duration JND and pitch JND of pure to...This paper addresses the JND（Just Noticeable Difference）change of auditory perception with synchronous visual stimuli.Through psychoacoustics experimentS,loudness JND,subjective duration JND and pitch JND of pure tone were measured in auditory-only mode and visual_auditory mode with different visual stimuli which have different attributes such as color,illumination,quality and moving state.Statistical analyses of the experimental data indicare that,comparing with JND in auditory-only mode,the amount of JND with visual stimuli is often larger.The JND＇S average increment of subjective duration,pitch and loudness are 45.1%,14.8%and 12.3%,respectively.The conclusion is that the ability of JNDbased auditory perception often decreases with visual stimuli.The incremental amount of JND is afiected bv the attributes of visual stimuli.If the visual stimuli make subjects feel more comfortable,the JND of auditory perception will change smaller.展开更多
文摘The relations of intensity Just Noticeable Difference (JND) to intensity for tone bursts maybe,depend on signal durations according to Jont B.Allen's [J. Acoust. Soc. Am. 102 3, 1997, 3628--3646.]. The intensity just noticeable differences for tone bursts with durations of 1 ms, 10 ms, 100 ms, 1000 ms, 5000 ms and 10000 ms were measured at different intensity levels of 20 dB, 30 dB, 40 dB, 50 dB, 60 dB, 70 dB, 80 dB, 90 dB, 100 dB. The data show that variance of Weber fraction (△I/I) with intensity is distinct from Riesz's result and SPIN theory, and that the relations between Weber fraction and intensity for signals of different durations are similar in spite of Weber fraction decreasing to asymptote with signal duration increasing. This means the difference of pulse measurement of intensity JND from Riesz's result and SPIN theory does not arise from the limited signal duration of pulse method and provides new cue for hearing research.
文摘This paper addresses the JND（Just Noticeable Difference）change of auditory perception with synchronous visual stimuli.Through psychoacoustics experimentS,loudness JND,subjective duration JND and pitch JND of pure tone were measured in auditory-only mode and visual_auditory mode with different visual stimuli which have different attributes such as color,illumination,quality and moving state.Statistical analyses of the experimental data indicare that,comparing with JND in auditory-only mode,the amount of JND with visual stimuli is often larger.The JND＇S average increment of subjective duration,pitch and loudness are 45.1%,14.8%and 12.3%,respectively.The conclusion is that the ability of JNDbased auditory perception often decreases with visual stimuli.The incremental amount of JND is afiected bv the attributes of visual stimuli.If the visual stimuli make subjects feel more comfortable,the JND of auditory perception will change smaller.
