作者：万宇鹏, 谢荣基, 桂桂
作者单位：中国测试技术研究院声学研究所, 四川 成都 610021
关键词：声学;无线测试系统;DIRAC;客观音质参数
摘要：
室内声学脉冲反向积分法能够快捷全面地测量部分声学参数，但传统测试受限于系统中各种设备的有线连接方式。为更加科学高效地进行各种规格的厅堂声学测试，该文基于脉冲反向积分法针对丹麦BK4942和德国Sennheiser MKH800 P48两种传声器在有线模式和无线模式的3种情况下进行包括早期衰减时间EDT、混响时间T20、混响时间T30、音乐明晰度C80、语言清晰度D50等客观音质参数的测量。测量结果显示在100～8000 Hz中高频频段范围内测试数据与传统测试方法相比有较高的复合度，可以在各类厅堂场馆的现场工程测试中使用。通过不同测试模式的对比初步验证无线测试系统在厅堂声学测量中的可行性与可靠性。
Application and comparison of sound filed wireless test system based on DIRAC
WAN Yupeng, XIE Rongji, GUI Gui
Institute of Acoustics, National Institute of Measurement and Testing Technology, Chengdu 610021, China
Abstract: The interior acoustic pulse reverse integration method can be used to measure the partial acoustic parameters quickly and comprehensively. But the traditional test is restrained by the wire connection of equipment in the system. In order to do the acoustic test more scientifically and efficiently for various specifications, this paper did measurements of objective sound quality parameters such as EDT, T20, T30, C80, D50 in three cases of both wired mode and wireless mode by B&K 4942 microphone of Denmark and Sennheiser MKH800 P48 microphone of Germany based on pulse reverse integration. The measurement results show that in the frequency range of 100 Hz to 8 000 Hz, the test data has good repeatability compared to traditional test method. This method can be used in the engineering test of some venues. By comparing the different test modes, this paper verifies the feasibility and reliability of wireless testing system in acoustic measurement.
Keywords: acoustics;wireless test system;DIRAC;objective sound quality parameters
2016, 42(12): 77-81 收稿日期: 2016-06-28;收到修改稿日期: 2016-08-03
基金项目:
作者简介: 万宇鹏(1985-),男,四川成都市人,工程师,主要从事声学检测与建筑声学相关工作。
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