Frequency lowering processing for listeners with significant hearing loss. - C. M. Aguilera-Muñoz; Peggy B. Nelson; Janet C. Rutledge; Alfonso Gago (ICECS, 1999)

Frequency lowering using a discrete exponential transform. - C. M. Aguilera; A. Navas; Rafael Urquiza de la Rosa; Alfonso Gago (EUROSPEECH, 1999)

Enhancement of spectral contrast in speech for hearing impaired listeners. - C. M. Aguilera-Muñoz; Peggy B. Nelson; Janet C. Rutledge (NSIP, 1999)