Pérez-Ruiz, S.J., Damián- Zamacona, R., Quintana-Thierry, S., Bañuelos-Saucedo, M.A. and Castillo-Hernández, J. 2004. Hearing aid. Measurement of electroacoustical characteristics. Journal of Applied Research and Technology. 2, 03 (Dec. 2004). DOI:https://doi.org/10.22201/icat.16656423.2004.2.03.574.