Comparing musicians and non-musicians in signal-in-noise perception.

The objective is to compare musicians and non-musicians in signal-in-noise perception. Participants underwent the following tests: (1) High-frequency (HF) audiometry, (2) QuickSIN (a test for speech perception in noise), and (3) Binaural Masking Level Difference (BMLD) test (a test that examines the hearing threshold of a low-frequency tone from noise masking when the phase of the signal or noise in one ear is reversed with respect to the phase of the signal or noise in the other ear, i.e. the difference in the threshold for detection of the tone in noise under the SN and SN conditions). Thirty-four healthy young normal-hearing listeners including 17 musicians (M) and 17 non-musicians (NM). There were no study group difference in HF audiometry and QuickSIN. The M group had a significantly better performance under the SN but not under the SN condition. As a result, the BMLD value (SN-SN) was significantly smaller in the M group than in the NM group. There is a musicians' advantage in binaural tone-in-noise detection in the BMLD task under the SN condition, suggesting that long-term music training positively shapes the auditory system.