title: Fine structure processing improves telephone speech perception in cochlear implant users.
abstract: The objective of this study was to compare telephone speech perception and subjective preferences in cochlear implant users with two different speech-processing strategies: high-definition continuous interleaved sampling (HDCIS) and fine structure processing (FSP). A randomized double-blind study was designed for intra-individual comparison of HDCIS and FSP. Twenty-five post-lingually deafened patients with either the PulsarCI(100) or SonataTI(100) and Opus2 acoustic processor were tested consecutively with both coding strategies, assigned in a random order. Disyllabic word speech perception was tested 6 weeks after each fitting under the following conditions: landline use with (LWN) and without (LWoN) background noise, mobile use with (MWN), and without (MWoN) background noise and mobile use with a Bluetooth magnetic field transmitter necklace (MB). Changes in health-related quality of life (QoL) were assessed using the Glasgow Benefit Inventory (GBI) and Faber's questionnaire. Personal preferences between strategies were surveyed upon completion of the study. All subjects included in this study performed better with FSP in the landline tests. There was an improvement of 11.5 % in LWN use (p = 0.014; CI 95 % = 3-20 %) and 10 % in LWoN use (p = 0.001; CI 95 % = 5-15 %). MWoN showed an improvement of 6.3 % with FSP (p = 0.03; CI 95 % = 0-13 %). MB tests showed an improvement of 11 % with FSP (p < 0.05; CI 95 % = 1.5-22 %). Quality of life was significantly better using FSP. Eighty-four percent of participants preferred FSP. The FSP speech coding strategy improved the speech recognition of cochlear implant users when using the telephone compared to HDCIS. Cochlear implantation with FSP coding improved QoL.
authors: Department of Otolaryngology-Head and Neck Surgery, University Hospital La Paz, Secretaria de Otorrinolaringología, 4th Floor, Paseo de la Castellana 261, 28046 Madrid, Spain. doctorgalindo@gmail.com
authors: Javier
authors: J
authors: Galindo
authors: Luis
authors: L
authors: Lassaletta
authors: Rosa Pérez
authors: RP
authors: Mora
authors: Alejandro
authors: A
authors: Castro
authors: Marta
authors: M
authors: Bastarrica
authors: Javier
authors: J
authors: Gavilán
mesh_terms: D000328:Adult; D000368:Aged; D040421:Cell Phone; D003054:Cochlear Implants; D003638:Deafness / Q000534:rehabilitation*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D017060:Patient Satisfaction; D010470:Perceptual Masking; D011474:Prosthesis Design; D013030:Spain; D013063:Speech Discrimination Tests; D013067:Speech Perception; D011795:Surveys and Questionnaires; D013689:Telephone