Perception of the pitch and XXXX of popular music by cochlear implant users.

@entity1 @entity14434
UNASSIGNED: Objectives To assess the perceived pitch and @entity14434 of popular music by cochlear implant (CI) users. Methods Eleven experienced post-lingually deafened adult CI users rated the pitch, @entity14434 , and clarity of a popular song with 10 frequency allocation settings, including the default. The alternative settings all had logarithmic frequency spacing and frequency shifts of less than one octave compared with the default map. For maps which were perceived as having incorrect pitch, @entity1 adjusted the pitch of the song in real time using a slider, in order to normalize it, and the amount of adjustment was recorded. Results The default map was rated as having close to correct pitch. Naturalness rating was negatively correlated with basal shift from a baseline logarithmic map, which was the same as the default map for basal electrodes (R(2)  =  0.77). Ratings of the clarity of the lyrics were adversely affected by basal shift. The majority of @entity1 were able to rate and adjust pitch appropriately. The frequency shift in the map was highly correlated with @entity1 ' adjustments of the pitch slider (R(2)  =  0.94), but the adjustments were less than expected for the majority of @entity1 . Discussion The pitch ratings for the default allocation suggest that @entity1 have acclimatized to their processors' frequency allocations. Adjustment of the pitch of the song was possible for the majority and suggested that all but one @entity1 was experiencing frequency compression. Expansion of the frequency allocation might help to alleviate this. Conclusion Adjustment of the pitch of a popular song could be helpful for tuning CIs.
