Lowshelf Filter Node

Standard lowshelf filter. Frequencies lower than the frequency get a boost, or an attenuation; frequencies over it are unchanged.


AudioThe Audio line to which the filter is applied.
Frequency-controlA 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.
Gain-controlA 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.


FrequencySets the upper limit of the frequencies getting a boost or an attenuation.
GainThe boost, in dB, to be applied; if negative, it will be an attenuation.
Filter orderRepresents the order of the differential equation describing the filter.


AudioThe filtered audio stream.

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