5 宽带地震仪的设计标准 5.1 甚宽带地震测量的概念地震和其他振动源辐射信号的频率和振幅的范围很大。用对数来表示,地震信号的频带要比声音的频带宽得多。在某一时刻,能够看到的仅仅是有限频率范围内的信号。因此,任何地震仪的记录,不论是纸记录还是胶片记录,就像滤波器一样,抑制了大多 5 Design criteria for broadband seismometers 5.1 Concepts of very wideband seismic surveys Seismic and other vibration sources radiate signals in a wide range of frequencies and amplitudes. In logarithmic terms, the frequency band of the seismic signal is much wider than the frequency band of the sound. At any given time, only the signals in the limited frequency range can be seen. Therefore, any seismograph records, whether paper records or film records, like filters, inhibit most