Analog synthesis often use low - pass filter to remove electronic audio generator generated by high - frequency noise 模拟合成器常常使用低通滤波器来去除电子音频发生器所产生的高频噪声。
Recently , the old analog synthesis of music has become increasingly popular and is one of the reasons digital recording equipment used more widely 近来老式模拟合成器的音色越来越风行,原因之一就是数字录音设备的应用越来越广泛。