MSF and DC blocker

[Tagirijus]

Hey there,

am I missing something or is the only way in MSF to block DC offset by using a filter module and enable "DC blocker" in the filter?

[operator]

The DC Blocker Button only enables a HP-Filter after the actual Filter, Drive and Saturation... DC Offset is corrected by just using a HP-Filter at 10 to 20 Hz (or something like that). So... you see where I´m going with that.

[Tagirijus]

Wow ... I feel so uneducated right now. I just checked the help from the DC filter of MPowerSynth and you are right according to the help text: it's just a filter, which cuts everything below 20 Hz.

Thanks for lighten me up!



... technically removing DC offset means to correct the Y-axis of a waveform, right? If this is true, does this happen by cutting everything below 20 Hz? I always wondered how DC offset blocker work.

[operator]

Wow ... I feel so uneducated right now. I just checked the help from the DC filter of MPowerSynth and you are right according to the help text: it's just a filter, which cuts everything below 20 Hz.

Thanks for lighten me up!



... technically removing DC offset means to correct the Y-axis of a waveform, right? If this is true, does this happen by cutting everything below 20 Hz? I always wondered how DC offset blocker work.

Yes, a DC Offset Blocker corrects constant shifts on the Y-axis. For example: imagine a sine at A 4 that has a DC Offset. When breaking it into it's single parts we get the sine at A 4 + the constant value of the DC Offset. We immediatly see, that the sine has an oscillation of 440Hz. but at which rate is the DC Offset?? The DC Offset is constat and doesn t oscillate, therefore it is at 0Hz. And to remove "such a low oscillation" you just use a HP Filter.

If you want to get a new/another perspective on DC Offset, I suggest try Bitwigs own DC Offset effect following by an oscilloscope... it is just a simple slider which introduces or corrects DC Offset. You even can modulate the slider with an LFO or with whatever you want. At some point you create audible waveforms. Just modulate the DC Offset value with higher rates (all bitwig stuff can be modulated in audio rate). With this you can create your own DIY Oscillator that ranges from 0 to 50khz... (naturally at some point / rate you'll get some aliasing ) This excercise may doesn t bring totally new informations... but I promise you will get another perspective when going through the process of creating an oscillator out of DC Offsett.
You even can use Bitwigs Audio Rate Modulator and send the signal from an Audio Track (or Instrument) to the DC Offset slider, so you can start creating your own sample-playback oscillator.

[Whywhy]

Or try to modulate, for experimentation, the Msf DC module , if I remember correctly his name, "set module", with a keytracking lfo in Msf
But , I think, the oscillator custom shape is just better ....

[Tagirijus]

Yes, a DC Offset Blocker corrects constant shifts on the Y-axis. For example: imagine a sine at A 4 that has a DC Offset. When breaking it into it's single parts we get the sine at A 4 + the constant value of the DC Offset. We immediatly see, that the sine has an oscillation of 440Hz. but at which rate is the DC Offset?? The DC Offset is constat and doesn t oscillate, therefore it is at 0Hz. And to remove "such a low oscillation" you just use a HP Filter.

Wow, thank you so much for this detailled explanation and taking your time to write it down for me and others here. ... now it really seems totally logical to me, hehe.

Or try to modulate, for experimentation, the Msf DC module , if I remember correctly his name, "set module", with a keytracking lfo in Msf
But , I think, the oscillator custom shape is just better ....

Thanks for this tip as well. I never looked that much at these kind of building blocks, but I indeed can create my own OSC this way, haha.

Here is an example MSF preset, which you can paste into MSF:

Code: Select all

$eNqtVl1z2jgUfedXaJTXbi0b27gzsjv5gG6mIWExTbOPin0BTYXESHI27K-fkQyEgpdJd-ZFYx2fc++5V7Yk+vl1JdALaMOVzHH4kWAEslI1l4scN3b+W4Y-Fz06LlUj6xGrrNIbA9ZyuTDoIschRhdfhHpmwszYs59fKyHY2kA95YulnTAJwuPDmlulS-435DiM++RDmsSH6JCZTY7JB4LR7398Wxu2Wgtvg2B0Ny3XglsLnhnmOCRZegxHPs2Yvd6NHq6Eqn448GE+F1xCjqMkxWjcCMsnTLMVWNBmb9UnKV1GuKyqRjMLwxeQ1vgXj7v+ZEkUZwQXtGyeJ6JZcLltSUHbaflza856KUFAZaFulW3luzhm94BGjRD3bAU5LsEiH9P8uJXe1x7H6MkDf7rxP3gp6Pjh5uKRiQbQtWqk9YobWNtljsnHmGS4oFNy8M7oiuT4bvTgLH1bX8r6Rv3lviBc0Jlm0syVXjHLlSRoeP84mQ7L4SzHn3BQ0GBKChrsMxY0+NnwHtg-mC7OyRr0Dpbl6X9fkeC8h6eiR+9GDyGaMguuaYQkaUxIPIg-pQOMytlwsusC2TbcUU-7HXb3+itskKmYAPRrPXZJCho4b63F6MhL0ML9bjjuhpNuOO2GB91w1gFPmazVKjyu8LDArC1wS9xJovdKor2k-15Jfy+J3yuJix79Chu-YifVFHSiuLRoJNjCXLntMHTSY5Bg9Oo+pYgk-WQQxlGWDDDa+F+yn0VR1o7npIOIpGk-SpM+SbfSLCJJGPmx3yUNvTT0bG8rODYfvBX2VuQ7+v9G7dFHEKri9l8adKo94h8FiH4xwKGDY2rvLdREgzGNhnMUbqvlFcj6DGes6u9LAHGGMuOrZw2D+AzlSgOzSxKdoQxf184xVzIMz9DulXU73ynji+A1lEu27qj4srL8BVxHwKLDSbtrKn1wmB7cAmYa3HbYHvTt5nbNLCyU3txaWN3KuQoKet1oDdKeqtojzi3g5aRN59byML2zptfbbTfyVsf+cI8K+p3XdjkuaKkaXQGaaJhzYUFvrxUu1I4S7EQ9GnTddkzR+wd3it12

.. of course the key scaling is nonsense, but I totally get the idea!

Thank you both.