title: Adaptation of cochlear implant fitting to various telecommunication systems: a proposal for a 'telephone map'.
abstract: CONCLUSIONS
  Despite the innovations in cochlear implant (CI) technology in recent years, some auditory tasks remain difficult for CI recipients. This work proposes the creation of specific maps for telephone communication (via conventional phone and via Internet protocol, VoIP). In light of our preliminary results, we believe that our experimental maps might improve conventional telephone and Internet communications for CI recipients.
  
  
  OBJECTIVE
  This study aimed to: (1) analyze the spectro-temporal characteristics of the signals; (2) evaluate speech recognition scores using two different types of telephone communication; and (3) change some map parameters on the basis of the previous signal analysis, to obtain a specific map for telephone use.
  
  
  METHODS
  Eleven Cochlear™ Nucleus® CI recipients were tested for bisyllabic word recognition in quiet using reproduced voice and transmitted voice via conventional telephone and Skype® using the habitual-ACE (SLB) map, and two experimental maps (F- and V-Map).
  
  
  RESULTS
  The results showed a worsening of word recognition scores with SLB-Map via telephone (30.5%) and VoIP (18.6%) compared with those achieved with the same map in an anechoic booth. In the experimental listening conditions, 65% and 54% of patients performed better with F- and V-Map, respectively, up to a maximum of performance improvement by 35% via telephone and 25% via VoIP.
authors.affiliation: Head and Neck Department, Catholic University of the Sacred Heart , Rome , Italy.
authors.forename: Sara
authors.initials: S
authors.lastname: Giannantonio
authors.forename: Walter
authors.initials: W
authors.lastname: Di Nardo
authors.forename: Lorenzo
authors.initials: L
authors.lastname: Schinaia
authors.forename: Gaetano
authors.initials: G
authors.lastname: Paludetti
mesh_terms: D000222:Adaptation, Physiological; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D003054:Cochlear Implants; D005260:Female; D005500:Follow-Up Studies; D006312:Hearing Loss, Bilateral / Q000503:physiopathology* / Q000601:surgery; D006319:Hearing Loss, Sensorineural / Q000503:physiopathology* / Q000601:surgery; D006801:Humans; D008297:Male; D008875:Middle Aged; D013067:Speech Perception / Q000502:physiology*; D013689:Telephone
keywords: Internet protocol; MP3000 speech coding strategy; Nucleus® system; VoIP; telephone perception