低频声区的性能与非常快的室内冲动响应测量
José Cadavid1, Martin Bo Møller2, Christian Sejer Pedersen1
1Department of Electronic Systems, Aalborg University, Aalborg, 9000, Denmark.
The Journal of the Acoustical Society of America
|January 29, 2024
概括
这项研究表明,短的无线麦克风采集时间,大约几百毫秒,足以准确控制低频声音区域. 从室内冲动响应 (RIR) 减少数据也保持了性能.
科学领域:
- 声学和信号处理
- 计算审计场景分析 场景分析
背景情况:
- 声音区域控制使用扬声器阵列将音频引导到特定区域,最大限度地减少其他区域的声音.
- 低频声音区域控制依赖于详细描述电声路径的室内冲动响应 (RIR).
- 无线麦克风网络提供了一种获取RIR的方法,这对于实时应用至关重要.
研究的目的:
- 研究方法来减少低频声音区域控制过器的获取和处理时间.
- 探索在动态声学环境中计算和更新控制过器的最小化数据要求.
主要方法:
- 使用现实世界的房间冲动响应 (RIR) 测量.
- 评估了缩短采集时间对声音区域染精度的影响.
- 评估了从RIR中减少数据对控制波器性能的影响.
主要成果:
- 证明了几百毫秒的采集时间足以在典型的房间中准确地呈现声音区域.
- 表明可以从获得的RIR中删除重要的数据,而不会影响声音区域的性能.
- 验证了快速适应不断变化的声环境的可行性.
结论:
- 短的采集时间和数据减少对于高效的低频声音区域控制是可行的.
- 拟议的方法可以实现更快,在计算上更少的要求和可适应的声区系统.
- 这项研究促进了动态声学设置中的实时音频控制.
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