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FFT-based digital tactile vocoder system for real-time use |
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| Authors: | Dr Ö Özdamar C N Lopez D K Oller R E Eilers E Miskiel Dr M P Lynch |
| Institution: | (1) Department of Biomedical Engineering, University of Miami, PO Box 248294, 33124 Coral Gables, Florida, USA;(2) Department of Psychology, University of Miami, PO Box 248294, 33124 Coral Gables, Florida, USA;(3) Department of Pediatrics, University of Miami, PO Box 248294, 33124 Coral Gables, Florida, USA;(4) Present address: Department of Audiology & Speech Sciences, Purdue University, 47907, IN, West Lafayette, USA |
| Abstract: | 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. |
| Keywords: | FFT Hearing prosthesis Speech processors Tactile aids Vocoders |
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