Spatial sound field control with smart sensors and actuators

空间声音控制是声音的受控合成，用于创建改进的声学体验，包括消除噪声信号。这一概念已经确立，但现有的几个商业系统无法在全方位的听力范围内工作。了解并接近声音控制性能的基本和实施限制将使现有系统能够更好地工作并创建新的应用程序。要做到这一点，就需要新的工程科学，如场与波、信号理论与处理，以及用于新型、低轮廓麦克风和扬声器阵列的新材料。这项研究将借鉴无线电科学中信号消除的新理论突破，以及先进材料的新实践突破。例如，宽带多输入和多输出智能天线技术正在通过信号消除彻底改变无线通信，纳米电子学的新突破正在实现诸如集成在透明基板上的柔性膜基麦克风和扬声器的进步，以减少物理存在和降低成本。该研究将集中于阵列的感测和波束形成，其孔径具有用于不同应用的不同形式，包括：1）显示屏外围，特别是平板电脑大小的显示屏外围，用于创建与显示内容和用户相关的新声音体验; 2）建造外围阵列或安装在屏幕上的阵列可以抑制透射噪声的窗户，以及3）使用现有扬声器作为阵列的车内噪声消除。对加拿大的好处将包括在信号理论和处理、智能材料和系统设计方面发展新的能力。高级培训将产生跨学科的工程师。不同科学学科的新融合，加拿大高科技制造商/出口商与大学研究之间的新技术转让，以及新的知识产权，将确保加拿大工业的新设计和产品，例如智能屏幕技术，QNX和电子艺术。

Spatial sound control is the controlled synthesis of a sound for creating an improved acoustic experience including the cancellation of noise signals. The concept is well established but the few commercial systems available cannot work over a full range of hearing. Understanding and getting closer to both fundamental and implementation limits of the sound control performance will enable existing systems to work better and create new applications. To do so, new engineering science is required from disciplines such as fields and waves, signal theory and processing, and new materials for new, low-profile arrays of microphones and loudspeakers. This research will draw on new theoretical breakthroughs in signal cancellation from radio science, and new practical breakthroughs in advanced materials. For example, wideband multiple-input and multiple-output smart antenna technology is revolutionizing wireless communications through signal cancellation, and new breakthroughs in nano-electronics are enabling advances such as flexible film-based microphones and loudspeakers integrated on transparent substrates for a reduced physical presence and a lower cost. The research will focus on the sensing and beamforming of arrays whose apertures have different forms for different applications, including: 1) display screen peripheries, in particular tablet-sized, for creating new sound experiences related to the display content and user; 2) building windows where a periphery array or a screen-mounted array can suppress transmitted noise, and 3) in-vehicle noise cancellation using existing speakers as an array. The benefits to Canada will include the development of a new capability in signal theory and processing, smart materials, and system design. The advanced training will produce interdisciplinary engineers. The new fusing of different scientific disciplines, new technology transfer between Canadian hi-tech manufacturer/exporters and University research, and new intellectual property, will ensure new designs and products for Canadian industry, for example, Smart Screen Technologies, QNX, and Electronic Arts.