Acoustical Ray Tracing

声学射线追踪

• 批准号: 9260046
• 负责人: Marshall Long
• 金额: $ 5万
• 依托单位: Marshall Long Acoustics Inc
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-01-01 至 1993-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9260046&HistoricalAwards=false
• 关键词: Acoustical; Ray; Tracing

Ray tracing is a technique used in computer graphics wherein a ray much like a pencil beam of light is followed from its source and is allowed to reflect from the various surfaces of the room until it is gathered in the eye of the viewer. This calculation technique (actually reversed in an actual program) allows for the accurate recreation of startling computer images. This research uses a similar technique to generate a computer code for the ray tracing of sound rays in a room. The rays would be allowed to interact with the surfaces of the room and be reflected or absorbed according to the treatment on each surface. The rays would then be gathered at a receiver location. Both the amplitude and direction of the rays, as well as the time of arrival, would be retained for future processing. The reproduction of sound using an array of speakers located around the observer would be simulated. A small number of speakers is anticipated, totalling approximately seven in number. Experiments will be carried out to confirm that this number is sufficient to localize sound sources at arbitrary angles within the space. The program will lead to the possibility of using digital signal processing to recreate the sound field of a space by playing a signal convolved with the room analysis through the speaker array.

光线跟踪是一种在计算机图形中使用的技术，其中 一条很像铅笔光束的光线从它的 源，并允许从各种表面反射， 直到它聚集在观众的眼睛。 这 计算技术（实际上在实际程序中是相反的） 允许精确再现令人吃惊的计算机 图像. 这项研究使用类似的技术来生成一个计算机 在房间里追踪声线的代码。 光线 可以与房间的表面相互作用， 根据对每个人的治疗， 面 这些射线将被收集在一个接收器上 位置. 射线的振幅和方向， 以及到达时间，将保留到未来 处理. 使用位于不同位置的扬声器阵列 周围的观察者将被模拟。 一小部分 预计将有7名发言者， number. 将进行实验来证实这一点 数量足以将声源定位在任意 空间内的角度。 该计划将导致使用数字的可能性 信号处理以通过以下方式重建空间的声场： 播放与房间分析卷积的信号， 扬声器阵列。