![Bandpass filter that automatically adapts its bandwidth when a transient is detected (to avoid to smoothen the transient) - Signal Processing Stack Exchange Bandpass filter that automatically adapts its bandwidth when a transient is detected (to avoid to smoothen the transient) - Signal Processing Stack Exchange](https://i.stack.imgur.com/M7Ci5.png)
Bandpass filter that automatically adapts its bandwidth when a transient is detected (to avoid to smoothen the transient) - Signal Processing Stack Exchange
![Negative result from filtering a positive signal with a band-pass filter - Signal Processing Stack Exchange Negative result from filtering a positive signal with a band-pass filter - Signal Processing Stack Exchange](https://i.imgur.com/Ns1GrKj.png)
Negative result from filtering a positive signal with a band-pass filter - Signal Processing Stack Exchange
![freqz() output for fifth order butterworth bandpass (low cut off frequencies, high sampling rate) · Issue #8485 · scipy/scipy · GitHub freqz() output for fifth order butterworth bandpass (low cut off frequencies, high sampling rate) · Issue #8485 · scipy/scipy · GitHub](https://user-images.githubusercontent.com/971634/36656313-e6f34556-1b1b-11e8-8aab-a0eb71e1fe82.png)