Posted on by Debanka

XoverBiquad

The XoverBiquad audio object computes crossover bi-quadratic filter coefficients and calculates the output of the input audio buffers processed through the filters that users specify.

Use Case: This object can be deployed whenever a user needs a crossover filter with specified parameters.

XoverBiquad Properties

Below table describes about the XoverBiquad audio object properties and functionality.

Properties Description
# of Channels Enter number of channels. The object has a configurable number of channels as well as the number of filters. The number of audio inputs is always equal to the number of audio outputs.

  • Range: 1 to 64
  • By default, the number of channels is set to 1.

In SFD, users can set the number of channels (the number of input and output channels is the same) as well as the number of filters. Users can also select the object corresponding to the required mode.
Number of biquads The number of elements generally describes the number of filters requested by the user.

  • Range: 1 to 100
  • By default, the value is set to 1.
Display Name Display the name of the XoverBiquad audio object in signal flow design. It can be changed based on the intended usage of the object.

Mode

There are no mode available for XoverBiquad audio object.

Additional Parameters

Parameter Description
Biquad Topology This audio object has an additional variable that allows you to pick the topology of the object at design time.

  • Direct Form I (DFI)
  • Direct Form II (DFII)
  • Transposed Direct Form II (TDFII)

By default, the object uses DFII.

Tuning Parameters

Parameter Description Tunable or Controllable Range Default
Frequency Filtering frequency to be applied Tunable 10 Hz – 20 kHz 1000 Hz
Type Filter type Tunable The memory layout is exposed in GTT as (per filter).

  • Bypass
  • High pass 1
  • High pass Butterworth 2
  • High pass Bessel 2
  • High pass Linkwitz Riley 2
  • High pass Butterworth 3
  • High pass Bessel 3
  • High pass Butterworth 4
  • High pass Bessel 4
  • Low pass Linkwitz-Riley 4
  • Low pass 1
  • Low pass Butterworth 2
  • Low pass Bessel 2
  • Low pass Linkwitz Riley 2
  • Low pass Butterworth 3
  • Low pass Bessel 3
  • Low pass Butterworth 4
  • Low pass Bessel 4
  • Low pass Linkwitz-Riley 4
BYP_XOVER
Bypass Bypass enable or disable Tunable 0 – 1 0

Control Interface

There are no control parameters available for XoverBiquad audio object.