Biquad Coefficients
biquad_coefficients · v1Calculates five coefficients for the selected filter from Frequency, Q, Gain and sample rate.
Biquad Coefficients
Inputs
Outputs
Select a port to see its purpose and an example connection. Its reference row will highlight.
Ports and connections
| Port / ID | Type | Connection |
|---|---|---|
Frequencyfrequency | number | Controls Frequency with a number stream. Without a wire, the manual value is 1000 Hz.Manual value when disconnected |
Qq | number | Controls Q with a number stream. Without a wire, the manual value is 0.70710678.Manual value when disconnected |
Gaingain | number | Controls Gain with a number stream. Without a wire, the manual value is 0 dB.Manual value when disconnected |
Outputout | array | An Array of five normalized coefficients for Biquad.OutputCapacity: 5 |
An output can feed multiple inputs of the same type. An input has one source; Function also requires matching signatures. All connection rules →
Parameters
Values describe manual settings. A connected stream replaces a parameter’s manual value; disconnecting restores it.
| Parameter | Range | Default | Control |
|---|---|---|---|
Frequencyfrequency | 1…96000 Hz | 1000 Hz | Input or manualLogarithmic scale |
Qq | 0.05…100 | 0.70710678 | Input or manualLogarithmic scale |
Gaingain | -60…60 dB | 0 dB | Input or manualLinear scale |
Filter typetype | 0…70: Low Pass · 1: High Pass · 2: Band Pass · 3: Notch · 4: All Pass · 5: Bell · 6: Low Shelf · 7: High Shelf | 0 | StaticLinear scale |
How to use it
Choose Low Pass, Frequency = 1000 Hz, Q = 0.707; Array output → Biquad / coefficients.
Things to check
Frequency is internally limited to 0.49 × Sample Rate. Filter type is static.
Check required inputs and matching types. Run Compile before auditioning; a validation failure preserves the previous working module. Troubleshooting →