Davis R O
Comput Methods Programs Biomed. 1986 Dec;23(3):199-210. doi: 10.1016/0169-2607(86)90051-9.
A new, integrated digital signal processing (DSP) system, the Personal Acoustics Lab (PAL), is described. This microcomputer-based system is suitable for analogue signal digitization at rates from several samples per hour to 150,000 samples per second in 12- or 16-bit words. Data may be acquired on one to sixteen single-ended A/D, or one to eight double-ended A/D channels in bipolar or unipolar modes. Digitized data may be reconverted to analogue signals using one or two D/A channels. An external clock and trigger and two bidirectional digital ports are provided. Integrated PAL-ILS software commands perform all necessary DSP functions, including: data editing, time- and frequency-domain graphical display, plotting, filtering, Fourier and Hilbert transforms, linear predictive coding, auto- and cross-correlation, and summary statistics. The system is suitable for biological and engineering DSP applications. Output from selected PAL-ILS software commands is illustrated using a bioacoustical example.
本文介绍了一种新型的集成数字信号处理（DSP）系统——个人声学实验室（PAL）。这个基于微型计算机的系统适用于以每小时几个样本到每秒150,000个样本的速率进行模拟信号数字化，采用12位或16位字长。数据可以在1至16个单端A/D通道或1至8个双端A/D通道上以双极性或单极性模式采集。数字化数据可以使用1或2个D/A通道重新转换为模拟信号。提供了一个外部时钟和触发器以及两个双向数字端口。集成的PAL-ILS软件命令执行所有必要的DSP功能，包括：数据编辑、时域和频域图形显示、绘图、滤波、傅里叶变换和希尔伯特变换、线性预测编码、自相关和互相关以及汇总统计。该系统适用于生物和工程DSP应用。使用一个生物声学示例展示了选定的PAL-ILS软件命令的输出。
