白噪声发生器在国外早有商品问世,但直到近几年还只有小信号的产品,它们只能供噪声系数等测量之用.在需要大信号的用途中:如声学测量中的白噪声,往往需要几瓦以上的输出功率.没有这种商品,看来是由于制造有困难之故.因为频谱密度均匀的噪声信号,一经放大就难免引起频谱畸变,从而影响测量的精密度.本文拟介绍大信号白噪声发生器的制作方法,可供一般声学测量方面应用. White noise generators have long been commercially available in foreign countries, but until recently there were only small-signal products that could only be used for measurements such as noise figure etc. In applications requiring large signals such as white noise in acoustic measurements, Often require more than a few watts of output power. Without this product, it seems due to manufacturing difficulties because the noise-free signal of a uniform spectral density will inevitably lead to spectral distortion, thus affecting the measurement accuracy. Large-signal white noise generator production methods for general acoustic measurement applications.