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PubMed · 871510

An impedance pneumograph utilizing microprocessor-based instrumentation.

J L Schmalzel·R R Gallagher·J M Barquest
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J L Schmalzel, R R Gallagher, J M Barquest. An impedance pneumograph utilizing microprocessor-based instrumentation.. https://pubmed.ncbi.nlm.nih.gov/871510/

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A microprocessor-based real-time digital vibrotactile vocoder system has been developed to train the deaf and for artificial hearing research. The system is composed of a microcomputer module with a digital signal processor, interface units and an attenuator/driver circuit. Live or digitised (stored or synthetic) speech is presented to the skin spectrally through a belt housing eight or 16 vibrators. Speech is processed in real time using a fast Fourier transform. The system is also capable of presenting any arbitrary spatiotemporal pattern on the skin for artificial hearing experiments. A preliminary experiment with a deaf subject indicates that the system is potentially an effective device for artificial hearing.

Biomedical Engineering↗