["Monosonic" one canal digital implant].
In order to decrease the gap between the single and multichannel cochlear implant efficacy we tried to improve the speech coding strategy of the Monomac, the constant current single channel system which we designed in 1987. Owing to a research computerized system, different strategies have been successively studied in the laboratory on 12 new implanted patients during the first weeks of the post-operative period to avoid habituation differences. Results led us to design a miniaturized digital emitter, the Monosonic. This emitter allows the speech therapist to program the frequency band wideness (80-1000 Hz) of the transmitted information, and the threshold level and dynamic range of the stimulating square wave as a function of its frequency. Other strategies are discussed, which have not been yet studied, but may be also programmed.
Chouard
C H
CH
Laboratoire d'Audio-Phono-Prothèse de l'Assistance Publique de Paris.
Genin
J
J
Meyer
B
B
Fugain
C
C
Monneron
L
L
Dubus
P
P
Leveau
J M
JM
D000161:Acoustic Stimulation / Q000295:instrumentation; D003054:Cochlear Implants; D004867:Equipment Design; D006801:Humans; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*; D013067:Speech Perception
L'implant cochléaire monocanal numérique "Monosonic".