Stereo feedback suppressor, each channel includes 12 separate notch filters. Static and dynamic notch notch number can be set as a static trap set to 8, the dynamic notch is four, the first 1-8 notch filter is static, 9 to 12 is a dynamic notch filters. Static trap either by searching locking rejection frequency, you can manually set the rejection frequency and bandwidth, its application is very flexible. Dynamic notch is in a static trap after you are finished using automatic search frequency suppression. As a good feedback suppressor, inhibiting Notch filter speed, accuracy are two important features:
[1] the notch filter suppress speed: DS212A feedback to ensure minimum duration of the sound and efficient The DSP algorithm in response to about 0.4 seconds, can produce immediate feedback once suppressed;
[2] a notch filter accuracy: DS212A can be very accurate discovery feedback frequency, whether static notch filter, or dynamic notch , have a high resolution, the lowest error may be in the range 1Hz. Constant narrow bandwidth filter to ensure DSP212A have a good phase response, it does not reduce the sound quality. Notch filter bandwidth is optional: 1/5 octave or 1/20 octave. Can increase the microphone gain 9 ~ 12dB, without causing howling