This study aimed to adapt a method used in sound quality measurements named CI-MUSHRA (the multiple stimuli with hidden reference and anchor for cochlear implant users) to the Turkish language. The effect of low-frequency information and non-native musical stimuli on sound quality perception was investigated. Subjects completed the Turkish version of the MUSHRA test, called TR-MUSHRA, and the original CI-MUSHRA test. Participants also completed the Turkish monosyllabic word recognition test and the spectral temporal modulated ripple test (SMRT). 19 cochlear implant (CI) users and 16 normal-hearing (NH) adults were included. CI users demonstrated a lack of ability to detect the sound quality differences between original stimuli and stimuli with omitted low-frequency information up to 600 Hz in both tests.
Successfully adapted the CI-MUSHRA sound quality test for Turkish CI users (TR-MUSHRA), validating it as a reliable cross-cultural research tool.
CI users demonstrated significant difficulty detecting quality loss when low-frequency information (up to 600 Hz) was removed from stimuli.
Results suggest CI users struggle to discriminate high-pass filtered musical sounds regardless of music's language origin.