在时间延迟插曲以改善声学反射器定位
Hannes Rosseel1, Toon van Waterschoot1
1KU Leuven, Department of Electrical Engineering (ESAT), STADIUS Center for Dynamical Systems, Signal Processing and Data Analytics, Kasteelpark Arenberg 10, 3001 Leuven, Belgium.
The Journal of the Acoustical Society of America
|October 10, 2025
概括
精确的声学反射器定位使用时间延迟估计 (TDE) 插值. 辛克和惠塔克-香农插值方法显著提高了亚样本TDE精度,在模拟和现实测试中表现优于其他方法.
科学领域:
- 声学 声学 在声学方面
- 信号处理 信号处理
- 计算物理 计算物理
背景情况:
- 声学反射器定位对于房间声学和声音源定位等应用至关重要.
- 传统的时间延迟估计 (TDE) 方法缺乏精确定位所需的时间分辨率.
- 亚样本TDE精度是必要的,这导致了各种插值技术的发展.
研究的目的:
- 综合研究时间延迟插值,以实现声学反射器定位的亚样本精度.
- 在短时间窗口TDE的背景下推导和评估惠特克-香农插值公式.
- 为了比较 sinc 和 Whittaker-Shannon 插值与现有方法的性能.
主要方法:
- 从短时间窗口TDE的sinc插位推导Whittaker-Shannon插位公式的推导.
- 模拟来评估时间延迟误差和位置误差对于临界采样和带限反射.
- 使用来自MYRiAD数据集的现实世界测量的性能评估.
主要成果:
- 与现有技术相比,Sinc和Whittaker-Shannon插值方法显示出更高的性能.
- 这些方法在模拟中实现了较低的时间延迟误差和位置误差.
- 在各种配置的真实世界声学环境中观察到一致和可靠的性能.
结论:
- 辛克和惠塔克 - 香农插值显著提高了对声学反射器定位的亚样本TDE精度.
- 这些先进的插值技术提高了在反响条件下定位系统的精度.
- 这些发现对于在室内声学,声源定位和声学场景分析方面的应用至关重要.
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