Dillon H, Macrae J
J Rehabil Res Dev. 1986 Jan;23(1):1-15.
The requirements for hearing aid frequency responses, SSPL characteristics, compression limiting, directional response, and internal noise are examined. On the basis of the assumptions made, aids would best serve the hearing impaired if they had flat very-low-frequency gains (and various mid- and high-frequency gains), SSPL responses adjustable in shape and level, directional responses, and internal noise levels below a recommended criterion level.
对助听器的频率响应、饱和声压级（SSPL）特性、压缩限制、方向性响应和内部噪声的要求进行了研究。基于所做的假设，如果助听器具有平坦的极低频增益（以及各种中高频增益）、形状和电平可调节的SSPL响应、方向性响应以及低于推荐标准水平的内部噪声水平，那么它们将最适合听力受损者。
