Acoustical Ray Tracing

光线跟踪是计算机图形学中使用的一种技术，其中光线非常像铅笔光束，从其来源跟踪，并允许从房间的各个表面反射，直到聚集在观察者的眼睛中。这种计算技术(在实际程序中实际上是相反的)允许准确地再现令人震惊的计算机图像。这项研究使用了一种类似的技术来生成一个计算机代码，用于对房间中的声线进行射线跟踪。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情况被反射或吸收。然后，射线将被收集到接收器位置。射线的幅度和方向以及到达时间都将被保留，以供将来处理。将模拟使用位于观察者周围的扬声器阵列来再现声音。预计将有少量发言者，总数约为七人。将进行实验，以确认这个数字足以在空间内以任意角度定位声源。该程序将导致使用数字信号处理通过扬声器阵列播放与房间分析卷积的信号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.