Uploaded August 2017 | Updated September 2026, 13 hours ago
The inverted Oscillator ("-" out of the left mixer) is subtracted (e.g., added with minus sign) to lowpass filter output... instant high pass filter. :-)
The inverted Oscillator ("-" out of the left mixer) is subtracted (e.g., added with minus sign) to lowpass filter output... instant high pass filter. :-)
