The solution that you’ve perhaps seen before is to simply throw a resistor and capacitor ... filter which increases the output impedance across the board, making it quieter even for the low ...

The band-pass itself is constructed from a high pass and a low pass filter. [Ryan] used simple resistor capacitor (RC) filters to implement his design. All those discrete components would quickly ...

Construct a simple RC low pass filter circuit, using your capacitor. 2. With input level constant ... should ``switch'' on an LED wired in series with a current limiting resistor as shown below. The ...