Audio Signal Processing Instrumentation for Enhanced Laboratories

该项目将增强高年级本科生的实践经验，使他们能够在实验室中对扩展的音频数据段执行数字信号处理。之所以选择音频数据，是因为它将允许进行经济高效的实时信号处理。所提供的设备的可用性将大大提高学生可以进行的实验的质量和数量。由于需要提供一种集成的实验室设置来收集、存储、操作和再现扩展的音频数据段，因此需要购买一种计算机系统，该计算机系统具有从麦克风到计算机再到扬声器的所有部件。所选择的系统基于NEXT计算机，以及一些辅助音频硬件。该系统将用于从一个实验装置收集音频数据。这些数据既可以实时处理，也可以存储在计算机中并脱机处理。(可以通过软件和内置的数字信号处理板进行处理。)可以回放数据以向学生提供关于处理对音频数据有什么影响的直接反馈。

This project will enhance the practical experience of the senior undergraduates by providing them with the ability to perform digital signal processing upon extended segments of audio data in the laborator y. Audio data has been chosen because it will permit cost- effective, real time signal processing. The availability of the equipment provided will greatly improve the quality, and quantity, of the experiments that the students can perform. The need to provide an integrated laboratory setup to gather, store, manipulate, and reproduce extended segments of audio data has led to the need to purchase a computer system that has all the pieces from the microphone through the computer to the speaker. The system selected is based upon a NeXT computer, together with some ancillary audio hardware. The system will be used to gather audio data from an experimental setup. The data can either be processed in real time, or stored in the computer and processed off-line. (Processing can be done though both software and the built-in Digital Signal Processing board.) The data can be played back to give the students direct feedback as to what effects the processing had on the audio data.