[In English] Notice about replacement of decimation filters of F-net data ■ Feb 25, 2005   We will replace the decimation filters both of 20Hz sampling data and 1Hz sampling data on March/01/2005.   After the replacement of the recording system, we have used IIR filters as the decimation filters.   We will apply new FIR filters of the features of zero-phase and linear phase delay. Please see the SEED header for details.   The data already created by the old filters will still remain until we re-make them a few months later.   We will notice it again in this site, when the data is available.

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