The last method , mls signal impulse , has so obvious predominance in the aspect of decreasing noise as to obtain increasingly wide use 其中最大长度序列法在测量效率以及抑制噪声方面有比较明显的优势,因此近来得到比较广泛的应用。
There are several widely used methods to acquire the frequency response graph , including single tone method , multiple tone method , noise impulse method and maximum length sequence signal impulse method 分析音频设备的频率响应特性主要有单音信号检测法、噪声冲击检测法和最大长度序列检测法等。