民族器乐主观混响感差别阈限的测量

Test of the subjective reverberance limen with Chinese music motifs

运用恒定刺激法测量了主观混响感的差别阈限,并通过一系列的实验检验了数据的有效性。实验素材为中国民族器乐中典型弹拨乐器、拉弦乐器、吹奏乐器独奏作品,受试人为音响技师、音响工程专业学生、声学所研究生。实验发现主观混响感的差别阈限为25%左右,受试人群体的类型对实验结果有影响,实验素材对结果的影响不显著。

The just noticeable difference （JND） of subjective reverberance perception was studied using constantstimulus-method, some factors that may influence the experimental results are analyzed to validate the experimental data. The test materials are the Chinese music motifs. Three subjects groups were tested, including the audio technician group, the students from audio engineering department and a group of postgraduates majoring in acoustics. The measured JND of subjective reverberance is about 25%. The difference possibly caused by the professional training and experience of different subjects groups is noticeable, but the difference caused by different music motifs is insignificant.