周波数フィルタ（ハイパスフィルタ）
入出力の例
入力
| time | 適用前 |
| 2012/12/31 4:00 | -0.996231 |
| 2012/12/31 5:00 | -0.95659 |
| 2012/12/31 6:00 | -0.751777 |
| 2012/12/31 7:00 | -0.467681 |
| 2012/12/31 8:00 | 0.219435 |
| 2012/12/31 9:00 | -0.064661 |
| 2012/12/31 10:00 | -0.441253 |
| 2012/12/31 11:00 | -0.262867 |
| 2012/12/31 12:00 | 0.120332 |
| 2012/12/31 13:00 | 0.074084 |
| 2012/12/31 14:00 | 0.206222 |
| 2012/12/31 15:00 | 0.609241 |
| 2012/12/31 16:00 | 0.199615 |
| 2012/12/31 17:00 | -0.025019 |
| 2012/12/31 18:00 | -0.276081 |
| 2012/12/31 19:00 | -0.302509 |
| 2012/12/31 20:00 | -0.480894 |
| 2012/12/31 21:00 | -0.467681 |
| 2012/12/31 22:00 | -0.698922 |
| 2012/12/31 23:00 | -0.771597 |
出力
| time | 適用後 |
| 2012/12/31 4:00 | 0.054013 |
| 2012/12/31 5:00 | 0.035739 |
| 2012/12/31 6:00 | -0.034952 |
| 2012/12/31 7:00 | -0.123907 |
| 2012/12/31 8:00 | -0.190868 |
| 2012/12/31 9:00 | -0.125731 |
| 2012/12/31 10:00 | 0.121871 |
| 2012/12/31 11:00 | 0.810601 |
| 2012/12/31 12:00 | 0.252833 |
| 2012/12/31 13:00 | -0.430374 |
| 2012/12/31 14:00 | -0.360334 |
| 2012/12/31 15:00 | -0.127351 |
| 2012/12/31 16:00 | -0.183425 |
| 2012/12/31 17:00 | 0.010685 |
| 2012/12/31 18:00 | -0.152983 |
| 2012/12/31 19:00 | 0.251627 |
| 2012/12/31 20:00 | 0.434544 |
| 2012/12/31 21:00 | 0.305506 |
| 2012/12/31 22:00 | -0.148384 |
| 2012/12/31 23:00 | -0.223243 |