Noise generator for tinnitus treatment based on look-up tables

URIZ, A. J.; AGUERO, P.; TULLI, J. C.; CASTIÑEIRA MOREIRA, J.; GONZÁLEZ, E. L.; HIDALGO, R.; CASADEI, M.

Journal of Physics: Conference Series (JPCS)

IOP SCIENCE

Lugar: Londres; Año: 2015 p. 1 - 10

1742-6596

Treatment of tinnitus by means of masking sounds allows to obtain a significantimprove of the quality of life of the individual that suffer that condition. In view of that, it is possible to develop noise synthesizers based on random number generators in digital signal processors (DSP), which are used in almost any digital hearing aid devices. DSP architecture have limitations to implement a pseudo random number generator, due to it, the noise statisticscan be not as good as expectations. In this paper, a technique to generate additive white gaussian noise (AWGN) or other types of filtered noise using coefficients stored in program memory of the DSP is proposed. Also, an implementation of the technique is carried out on a dsPIC from Microchipr. Objective experiments and experimental measurements are performed to analyze the proposed technique.