This file is from Wikimedia Commons and may be used by other projects.
The description on its file description page there is shown below.
Summary
Description75 Hz HPF on Smaart.jpg
English: 75 Hz high pass filter from an input channel of a Mackie 1402 mixer as measured in transfer function mode on Smaart software. Filter is indicated on the mixer to have a slope of 18 dB per octave.
to share – to copy, distribute and transmit the work
to remix – to adapt the work
Under the following conditions:
attribution – You must give appropriate credit, provide a link to the licence, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible licence as the original.
Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation Licence, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the licence is included in the section entitled GNU Free Documentation Licence.http://www.gnu.org/copyleft/fdl.htmlGFDLGNU Free Documentation Licensetruetrue
You may select the licence of your choice.
Captions
Add a one-line explanation of what this file represents
{{Information |Description={{en|1=75 Hz high pass filter from an input channel of a Mackie 1402 mixer as measured in transfer function mode on Smaart software. Filter is indicated on the mixer to have a slope of 18 dB per octave.}} |Source={{own}} |Author