Department of Medical Rehabilitation Sciences, College of Applied Medical Sciences, King Khalid University, Abha 61481, Saudi Arabia.
All India Institute of Speech and Hearing, University of Mysore, Mysuru, India.
J Acoust Soc Am. 2023 May 1;153(5):2562. doi: 10.1121/10.0017973.
Psychoacoustic and speech perception measures were compared for a group who were exposed to noise regularly through listening to music via personal music players (PMP) and a control group without such exposure. Lifetime noise exposure, quantified using the NESI questionnaire, averaged ten times higher for the exposed group than for the control group. Audiometric thresholds were similar for the two groups over the conventional frequency range up to 8 kHz, but for higher frequencies, the exposed group had higher thresholds than the control group. Amplitude modulation detection (AMD) thresholds were measured using a 4000-Hz sinusoidal carrier presented in threshold-equalizing noise at 30, 60, and 90 dB sound pressure level (SPL) for modulation frequencies of 8, 16, 32, and 64 Hz. At 90 dB SPL but not at the lower levels, AMD thresholds were significantly higher (worse) for the exposed than for the control group, especially for low modulation frequencies. The exposed group required significantly higher signal-to-noise ratios than the control group to understand sentences in noise. Otoacoustic emissions did not differ for the two groups. It is concluded that listening to music via PMP can have subtle deleterious effects on speech perception, AM detection, and hearing sensitivity over the extended high-frequency range.
对一组通过个人音乐播放器（PMP）听音乐而经常接触噪声的人和一组没有这种接触的对照组进行了心理声学和语音感知测量。使用 NESI 问卷量化的终生噪声暴露，暴露组比对照组高出十倍。两组在常规频率范围内（高达 8 kHz）的听力阈值相似，但在更高频率下，暴露组的阈值高于对照组。使用在 30、60 和 90 dB 声压级（SPL）的阈值均衡噪声中呈现的 4000 Hz 正弦载波测量幅度调制检测（AMD）阈值，调制频率为 8、16、32 和 64 Hz。在 90 dB SPL 但不是在较低水平下，暴露组的 AMD 阈值明显高于对照组（更差），尤其是在低调制频率下。暴露组需要比对照组高得多的信噪比才能在噪声中理解句子。两组的耳声发射没有差异。结论是，通过 PMP 听音乐可能会对语音感知、AM 检测和高频扩展范围内的听力敏感度产生微妙的有害影响。
