FFT-based digital tactile vocoder system for real-time use
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. © 1992 IFMBE.
Medical & Biological Engineering & Computing
Özdamar, O., Lopez, C., Oller, D., Eilers, R., Miskiel, E., & Lynch, M. (1992). FFT-based digital tactile vocoder system for real-time use. Medical & Biological Engineering & Computing, 30 (2), 213-218. https://doi.org/10.1007/BF02446132