The Personal Acoustics Lab (PAL): a microcomputer-based system for digital signal acquisition, analysis, and synthesis |
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| Authors: | R O Davis |
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| Affiliation: | 1. Life Science Research Infrastructure Group, RIKEN SPring-8 Center, Kouto, Hyogo, Japan;2. Laboratory for Protein Crystallography, Institute for Protein Research, Osaka University, Suita, Osaka, Japan;3. Faculty of Science, Department of Science, Yamagata University, Yamagata, Japan;4. National Institute for Basic Biology, National Institutes of Natural Sciences, Okazaki, Japan;5. Chemistry Research Laboratory, South Parks Road, Oxford University, United Kingdom;6. Cellular and Structural Physiology Institute, Nagoya University, Nagoya, Japan;7. Graduate School of Pharmaceutical Sciences, Nagoya University, Nagoya, Japan;8. Research Center for Ultra-High Voltage Electron Microscopy, Osaka University, Ibaraki, Osaka, Japan;9. Department of Basic Biology, School of Life Science, the Graduate University for Advanced Studies, Sokendai, Okazaki, Japan |
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| Abstract: | 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. |
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