Caracterization of the acoustic quality of classrooms for musical practice and teaching

Abstract Musicians need to properly perceive sound in the rooms destined to music study and practice. That is possible when those rooms are acoustically prepared and thus enable the development and improvement of musical sound perception. In this study, three study rooms and three collective music classrooms at a university were characterised acoustically through the opinions of their musician-users and measurements of their impulsive responses, as well as by the subsequent calculation of the rooms' acoustic parameters. Rooms described by musicians as dry presented average reverberation times of 0.3 seconds in the 500-1000 Hz octave bands, clarity between 14 and 22 dB and definition between 88% and 96 %. The rooms described as reverberant ones are characterised by reverberation times around 1.5 seconds, clarity of 1 dB and definition of 40%. The musicians' opinions allowed us to understand their preferences for the acoustic quality of the rooms, and to conclude that the information provided by them was quite consistent with the data measurements.

摘要 音乐学习者需在用于音乐学习与练习的空间中正确感知声音。当此类空间经过声学优化处理后，便可实现这一目标，并助力音乐听觉感知能力的发展与提升。本研究针对某高校的3间音乐研习室与3间集体音乐教室，通过其使用者（音乐学习者）的主观评价、空间脉冲响应测量，以及后续的声学参数计算，对其声学特性进行了表征。被音乐使用者描述为“干冷声场”的空间，在500-1000Hz倍频程频段内的平均混响时间为0.3秒，声场明晰度介于14至22分贝之间，声场清晰度处于88%至96%的区间；而被归类为“混响过长声场”的空间，其声学特性表现为混响时间约1.5秒，声场明晰度仅1分贝，声场清晰度仅为40%。音乐使用者的主观评价帮助我们明确了其对空间声学品质的偏好，并得出结论：使用者提供的主观信息与客观测量数据具有高度一致性。