Controls and parameters
Labels and units follow the controls in the app. The instrument, model, or mode can change which controls are visible.
| Control | Displayed range | Meaning |
|---|---|---|
| Frequency | 20 – 12000 Hz | The number of cycles per second, measured in hertz. |
| Q | 0.2 – 10 | A measure of a filter's sharpness or bandwidth. |
| Threshold | -72 – 0 dB | A reference level that triggers a change in processing. |
| Ratio | 1 – 20 :1 | The input-level increase compared with the output-level increase above threshold. |
| Range | 0 – 18 dB | Boost or cut applied to a filter band. |
| Attack | 1 – 200 ms | How quickly the initial change in a process happens. |
| Release | 10 – 2000 ms | How quickly a process recovers as its triggering condition decreases. |
| Blend | 0 – 100 % | The balance between the original signal and the processed signal. |
What is this effect for?
Reduce one band when energy in that range rises above a threshold.
Try listening
Choose Frequency and Q, then start with a small Range. Adjust Threshold, Ratio, Attack, Release, and Blend while playing the same phrase.
Read the band detector
Band detector GR reports the selected-band detector attenuation before Blend. It does not report the volume loss of the whole signal. A zero Blend does not establish that the detector is inactive.
Things to watch
The band detector is stereo-linked. This is neither Noise Reduction nor a Noise Gate and has no external detector sidechain.