*The DSP212 is a stereo feedback suppressor, and each channel includes 12   independent notch filters. The number of static notch and dynamic notch can   be set;
*The notch filter suppression rate: DSP212 can ensure that the continuous   time of the feedback sound is minimal, the efficient DSP algorithm responds   to about 0.4 seconds, and the feedback can be immediately suppressed once   generated;
*The notch filter accuracy: DSP212 can be very accurate to find feedback   frequency points, whether static trap or dynamic trap, which have high   resolution, and the minimum error can be within 1Hz;