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Peaking Filter Node

Standard peaking filter Node, frequencies inside a specific frequency range get a boost or an attenuation, and frequencies outside it are unchanged.

In other words, this Node can be used to increase or decrease the gain (or volume) only for a specific range of frequencies (e.g. to lower the volume around 1 kHz).

Inputs

Audio The Audio line to which the filter is applied.
Frequency-control A Control input to automate the Frequency setting, in Hz, from 10 Hz to the Nyquist frequency. This input can be toggled from the Node settings panel.
Q-control A Control input to automate the Q setting, from 0.0001 to 1000. This input can be toggled from the Node settings panel.
Gain-control A Control input to automate the Gain setting, in dB, from -40 dB to 40 dB. This input can be toggled from the Node settings panel.

Settings

Frequency Sets the middle of the frequency range getting a boost or an attenuation.
Q Sets the width of the frequency band. The greater the Q value, the smaller the frequency band.
Gain Sets the boost to be applied, in dB. If set to a negative value, an attenuation is applied.
Filter order Represents the order of the differential equation describing the filter. In other words, this essentially sets how many times the filter is applied.

Outputs

Audio The filtered Audio.

Audio and Control lines (visualized with blue and purple, respectively) are both analogous to an analog signal. They can be used interchangeably, and, for example, an Audio output (blue) can be connected to a Control input (purple), or vice-versa.

Technical details

This Node and has exactly 2 samples of latency (equals ~0.0045 milliseconds at 44.1 kHz).

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