for Hearing Loss To the Editor Dr Reed and colleagues1 compared personal sound amplification products (PSAPs) with a conventional hearing aid for speech understanding in noise in patients affected by mild to moderate hearing loss. In an audiologist’s practice, the hearing aid gain is largely influenced by hearing loss type (transmissive, sensorineural, or mixed) or the area of abnormality in the auditory system (middle ear, inner ear, or brain), but these were not specified in the Research Letter. In the inclusion criteria, the loudness discomfort level, which is variable among patients affected by hearing loss, was omitted. It is well known that if the hearing aid does not take into account loudness discomfort level, sound distortion, impaired speech comprehension, and patient discomfort can occur.2 Also, the ear insert of a hearing aid should be customized because the distance between ear insert and tympanic membrane influences the hearing aid gain.3 That 80% of deaf and hearing-impaired people live in lowand middle-income countries and that 1 in 7 individuals 50 years and older with hearing loss in Western countries use hearing aids suggest the study has significant implications for public health.4 However, among adults aged 50 to 59 years, the rate of hearing aid use declines to less than 1 in 20. Factors that may contribute to low hearing aid use include cost, low consumer awareness of the benefits of amplification, and an inadequate hearing aid customization.5 The variability of hearing loss is great among patients, and only a careful hearing evaluation and a customized hearing aid fitting can guarantee adequate hearing rehabilitation. Future research should focus on the development of specific interventions designed to increase hearing aid use among the hearing loss population.

中文翻译：

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用于听力损失的个人声音放大产品

对于听力损失 致编辑 Reed 博士及其同事 1 比较了个人声音放大产品 (PSAP) 与传统助听器在轻度至中度听力损失患者噪音中的语音理解。在听力学家的实践中，助听器增益在很大程度上受听力损失类型（传导性、感音神经性或混合性）或听觉系统异常区域（中耳、内耳或大脑）的影响，但这些在研究信。在纳入标准中，在受听力损失影响的患者中不同的响度不适水平被省略了。众所周知，如果助听器不考虑响度不适水平，可能会出现声音失真、言语理解障碍和患者不适。 2 此外，