| DC-Removal PlugIn | Sound LaundryÖ 2.5 |
By using the DC-Removal PlugIn, you can easily test the DC-offset and its drift in the analog-to-digital converter on your soundcard. The best way is to record a steady signal. A sinewave signal is recommended but not absolutely necessary. The recording level of the test signal has to be pretty high, just below any clipping occurs. The amount of the converter DC-offset can be read after playing back a few seconds of the test signal through the activated DC-Removal PlugIn. Repeating this test in an hour shows you the amount of the DC-offset drift, i.e., how strong the DC-offset changes over time. The high values of the DC-offset drift can be attributed to different recording quality over this time period. Especially large values can be expected when comparing DC-offset just after equipment switch-on and an hour or so later. An interesting check is to observe the DC-offset value during a longer time period to see if the DC-offset saturates, i.e., if it remains unchanged after warming up.
It is recommended that you always use the DC-Removal PlugIn as the very first PlugIn in the processing chain to prepare a DC-offset free signal for any other PlugIns. The improvement of the overall sonic quality, especially for low-level signals, can be considerable.
Due to high-precision design, the DC-Removal PlugIn can be chained into the PlugIn-Station by default without fear of any signal degradation, even in the case of perfectly recorded sample strings.