The development of technical communication devices for hearing-impaired or deaf persons is one of the main topics in actual research on aids for the disabled and elderly. Besides the well-known advances in the construction of analogue and digital hearing aids for the hard-of-hearing, there is also a long tradition of research on tactile speech aids. From the beginning of this century, many attempts have been made to resolve the problem of speech substitution for deaf people and those suffering from severe hearing loss. A series of experiments was carried out to determine a robust coding method for tactile transmission of F0 and stress to support speech perception of deaf or severely hearing impaired persons unable to extract suprasegmental speech features by the auditory sense.