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[[resources:tools-software:sigmastudio:toolbox:filters|Click here to return to the filters page]]\\
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====== Biquad 3 channel 1 cascade======

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This 3 channel Infinite Impulse Response (IIR) filter consists of a single Biquad section, five
coefficients, and Direct-Form-2 implementation.
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{{:resources:tools-software:sigmastudio:toolbox:filters:biquad3ch1-tbx.jpg|}}
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====Input Pins====
^Name^Format [int/dec] - [control/audio]^Function Description^
|Pin 0: Input1 | decimal - Audio | Audio ch1 Input |
|Pin 1: Input1 | decimal - Audio | Audio ch2 Input |
|Pin 2: Input1 | decimal - Audio | Audio ch3 Input |
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====Output Pins====
^Name^Format [int/dec] - [control/audio]^Function Description^
|Pin 0: Output  |decimal - Audio| Filtered ch1 Output|
|Pin 1: Output1 |decimal - Audio| Filtered ch2 Output|
|Pin 2: Output2 |decimal - Audio| Filtered ch3 Output|
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==== Grow Algorithm ====
The module does not support Add and Growth. 
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====Configuration====
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{{:resources:tools-software:sigmastudio:toolbox:filters:biquad3ch1-gui.jpg|}}
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^GUI Control Name^Default Value^Range^Function Description^
|Enable | off | on/off | Enables filtering, when disabled audio output is 0|
|Coefficients | NA | NA | A table containing the user entered IIR filter coefficients (in order d1, d2, n0, n1, n2)|
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====DSP Parameter Information====
^GUI Control Name^Compiler Name^Function Description^
|Coefficients|<fc #008000>BiquadCascade3ch1_SC5xxAlg</fc><fc #ff0000>1</fc><fc #000080>Coeffs_3ch1</fc>| IIR filter coefficients entered in the order b1,b2,a0,a1,a2|
|Enable|<fc #008000>BiquadCascade3ch1_SC5xxAlg</fc><fc #ff0000>1</fc><fc #000080>Enable</fc> |Enables filtering|

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     * <fc #008000> Green</fc> - Algorithm Name
     * <fc #ff0000> Red</fc> - Instance Number (Changes for each instance)
     * <fc #000080> Blue</fc> - Parameter Name

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==== Algorithm Description ====
3 channel Infinite Impulse Response (IIR) filter consists of a single Biquad section, five
coefficients, and Direct-Form-2 implementation. The transfer function is as shown below
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{{:resources:tools-software:sigmastudio:toolbox:filters:biquad3ch1-tf.jpg|}}
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==== Supported ICs ====
  - ADSP215xx
  - ADSPSC5xx
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