Acoustical Ray Tracing

光线追踪是一种在计算机图形学中使用的技术，其中一束像铅笔光束一样的光线从它的来源被跟随，并被允许从房间的各个表面反射，直到它聚集在观看者的眼睛里。这种计算技术（实际上在实际程序中是相反的）允许精确地再现令人吃惊的计算机图像。这项研究使用了类似的技术来生成一个计算机代码，用于房间内声音光线的光线追踪。光线将被允许与房间的表面相互作用，并根据每个表面的处理被反射或吸收。然后，这些射线将被收集到一个接收器的位置。射线的振幅和方向以及到达的时间都将被保留以供以后处理。利用位于观察者周围的一组扬声器来模拟声音的再现。预计将有少数人发言，总数约为7人。实验将进行，以确认这个数字足以定位声源在空间内的任意角度。该程序将通过扬声器阵列播放与房间分析卷积的信号，从而实现使用数字信号处理来重建空间声场的可能性。

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.