User talk:197.254.141.125

October 2021
Hello, I'm Martin Urbanec. I wanted to let you know that I reverted one of your recent contributions—specifically this edit to Filter (signal processing)—because it did not appear constructive. If you would like to experiment, please use the sandbox. If you have any questions, you can ask for assistance at the Help desk. Thanks. Martin Urbanec (talk) 20:17, 10 October 2021 (UTC)