Howtosignalprocessing
- What is a two pole filter?
- What are poles in audio filters?
- What is a 4 pole filter?
- What is digital resonator?
What is a two pole filter?
A two pole filter has two RC circuits, and so on. A one pole filter will generally provide a high or low pass roll off in the neighborhood of 6 dB per octave (accompanied by some phase shift).
What are poles in audio filters?
Poles represent frequencies that cause the denominator of a transfer function to equal zero, and they generate a reduction in the slope of the system's magnitude response.
What is a 4 pole filter?
The 4-pole's basic purpose is to process any audio signal with a 24db low-pass filter, identical to the one the Waldorf MicroWave uses. Its complex modulation capabilities can be used not only to control cutoff frequency and resonance but also to manipulate volume and stereo-position of audio material.
What is digital resonator?
A digital resonator is a recursive (IIR) linear system having a complex conjugate pair of poles located inside the unit circle of the z-plane. The angle of the poles in polar co-ordinates sets the resonant frequency of the resonator, while the distance of the poles are to the unit circle sets the bandwidth.
