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美国芝加哥Belton电子有限公司研制出一种数控模拟助听器。它设有一个失真小的差动放大器和一个频带特宽的接收器。可预先在软件中对10个参数进行编程,这10个参数包括自功增益控制、增益控制、频响斜率、截止频率和高频加重等。用户可自行调整频率响应。凭借AGC-1控制,选配器可在5种AGC阈值中任意选择,当选择输入压缩工作方法时,可以确定压缩范围,并可调节助听器的频率响应;通过各档滤波可调节低频,调频范围从标准响应到
Belton Electronics Co., Ltd. of Chicago, USA has developed a numerical simulation hearing aid. It features a small distortion differential amplifier and a wide bandwidth receiver. Ten parameters can be programmed in advance in the software. These ten parameters include gain control, gain control, frequency response slope, cut-off frequency, and high-frequency emphasis. Users can adjust the frequency response. With the AGC-1 control, the adapter can be arbitrarily selected from the five AGC thresholds. When selecting the input compression method, the compression range can be determined and the frequency response of the hearing aid can be adjusted. The low frequency can be adjusted through the various filter steps, Standard response to