Data Soni cation and Sound Visualization
Data Soni cation and Sound Visualization
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数据超声和声音可视化
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通讯作者：
Elizabeth Wiebel
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作者：
H. Kaper;Elizabeth Wiebel
本文介绍了一个合作项目之间的研究人员在theChampaign。该项目的重点是在科学计算中使用声音来探索和分析复杂的数据集。本文讨论了数字声音合成的上下文中的DIASS（数字仪器加性声音合成）和声音可视化在虚拟现实环境中的M4 CAVE。本文介绍了科学声化和声音可视化的一些实验过程和初步结果。虽然大多数计算科学家经常使用视觉成像技术来探索和分析大型数据集，但他们往往不太熟悉声音的使用。然而，声音信号携带大量的信息，并且可以有利地用于增加人/计算机接口的带宽。本文所描述的项目侧重于科学的超声波处理|用声音忠实地再现科学数据|以及虚拟现实环境中声音的可视化。该项目源于一项将最新的超级计算技术应用于音乐创作过程的努力（见方框1），是一项联合的数字声音合成项目，第1节将讨论数字声音合成;讨论的中心是DI-ASS（用于加性声音合成的数字乐器）。第二部分介绍了科学超声处理的一些实验。第3节讨论了虚拟现实（VR）环境中的声音可视化;在这里，主要工具是M4 CAVE，一个从乐谱中可视化声音的程序。第4节载有关于该项目的一些一般性意见。数字声音合成是一种生成表示音频波形采样值的数字流的方法。为了实现声音，人们通过数模转换器（DAC）发送这些样本，DAC将数字转换为连续变化的电压，该电压可以被放大并发送到扬声器。观察数字声音合成过程的一种方法是想象一个计算机程序，它根据数学公式计算样本值，并将这些样本一个接一个地发送到DAC。所有的计算都是由一个程序来完成的，用户可以任意修改程序。从这个角度来看，数字合成与软件合成是一样的。软件合成与硬件合成不同，后者的计算是在特殊电路中进行的。硬件综合具有运算速度快的优点，但缺乏软件综合的灵活性。软件合成是技术的选择，如果一个人希望开发一种仪器...
This article describes a collaborative project between researchers in theChampaign. The project focuses on the use of sound for the exploration and analysis of complex data sets in scientiic computing. The article addresses digital sound synthesis in the context of DIASS (Digital Instrument for Additive Sound Synthesis) and sound visualization in a virtual-reality environment by means of M4CAVE. It describes the procedures and preliminary results of some experiments in scientiic soniication and sound visualization. While most computational scientists routinely use visual imaging techniques to explore and analyze large data sets, they tend to be much less familiar with the use of sound. Yet, sound signals carry signiicant amounts of information and can be used advantageously to increase the bandwidth of the human/computer interface. The project described in this article focuses on scientiic soniication|the faithful rendering of scientiic data in sounds|and the visualization of sounds in a virtual-reality environment. The project, which grew out of an eeort to apply the latest super-computing technology to the process of music composition (see Box 1), is a joint Digital sound synthesis is addressed in Section 1; the discussion centers on DI-ASS (Digital Instrument for Additive Sound Synthesis). Section 2 describes some experiments in scientiic soniication. Sound visualization in a virtual-reality (VR) environment is discussed in Section 3; here, the main tool is M4CAVE, a program to visualize sounds from a score le. Section 4 contains some general observations about the project. Digital sound synthesis is a way to generate a stream of numbers representing the sampled values of an audio waveform. To realize the sounds, one sends these samples through a digital-to-analog converter (DAC), which converts the numbers to a continuously varying voltage that can be ampliied and sent to a loudspeaker. One way of viewing the digital sound-synthesis process is to imagine a computer program that calculates the sample values according to a mathematical formula and sends those samples, one after the other, to the DAC. All the calculations are carried out by a program, which can be changed in arbitrary ways by the user. From this point of view, digital synthesis is the same as software synthesis. Software synthesis contrasts with hardware synthesis, where the calculations are carried out in special circuitry. Hardware synthesis has the advantage of high-speed operation but lacks the exibility of software synthesis. Software synthesis is the technique of choice if one wishes to develop an instrument for …