使用精确的非线性二次发射通过超声波聚焦扫描来可视化声源位置
Shihori Kozuka1, Keisuke Hasegawa2, Takaaki Nara1
1Department of Information Physics and Computing, Graduate School of Information Science and Technology, The University of Tokyo, Tokyo, Japan.
The Journal of the Acoustical Society of America
|December 17, 2025
概括
这项研究引入了一种使用非线性声学进行声场可视化的新方法. 它使成本效益高,单麦克风的声音场映射,而不会扰乱声环境.
科学领域:
- 声学 声学 在声学方面
- 非线性声学 非线性声学
- 信号处理 信号处理
背景情况:
- 传统的声音场可视化依赖于麦克风阵列,需要复杂的多通道处理,并可能扰乱声音场.
- 现有的方法面临成本效益,阶段信息处理和麦克风放置造成的工件方面的挑战.
研究的目的:
- 开发一种具有成本效益和非侵入性的方法,用于空间局部化的声场可视化.
- 为了克服传统的基于麦克风阵列的技术的局限性.
主要方法:
- 通过扫描收超声波束的焦点,利用空中非线性声学现象.
- 通过在超声波焦点对目标声场的频率调制生成二次参数波.
- 通过使用单个外部麦克风去调节二次波来重建声音场.
主要成果:
- 通过引导超声波聚焦实现空间选择性记录,作为参数探测器.
- 能够从单通道单声录制信号中重建声场.
- 在没有密集的麦克风排列的情况下,展示了数百毫米的声场可视化.
结论:
- 拟议的方法为声音场可视化提供了一个具有成本效益和非侵入性的替代方案.
- 它通过采用非线性声学和单通道录音来克服传统技术的局限性.
- 这种方法以空间定位的方式促进了准确的声音场映射.
更多相关视频
08:38Author Spotlight: Integration of Fiber Photometry and Focused Ultrasound Neuromodulation for Investigating Neural Modulation in Freely Moving Mice
Published on: September 6, 2024
2.0K
08:19Controllable Nucleation of Cavitation from Plasmonic Gold Nanoparticles for Enhancing High Intensity Focused Ultrasound Applications
Published on: October 5, 2018
6.8K
相关概念视频
01:25Ultrasound II: Endoscopic Ultrasound and FibroScan
499
Endoscopic Ultrasound (EUS) and FibroScan are valuable diagnostic tools in gastroenterology and hepatology, each with specific applications and techniques.
Endoscopic Ultrasound (EUS):
Endoscopic Ultrasound (EUS):
499
01:17Ultrasonography
7.3K
Ultrasonography is an imaging technique that uses high-frequency sound waves to visualize the body's internal structures. It is a non-invasive and safe procedure that does not involve the use of ionizing radiation, making it widely used in various medical fields. Ultrasonography is used to study heart function, blood flow in the neck or extremities, certain conditions such as gallbladder disease, and fetal growth and development.
During an ultrasonography procedure, a handheld device called...
During an ultrasonography procedure, a handheld device called...
7.3K