godot-docs/classes/class_audioeffectfilter.rst

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.. _class_AudioEffectFilter:

AudioEffectFilter
=================

**Inherits:** :ref:`AudioEffect<class_AudioEffect>` **<** :ref:`Resource<class_Resource>` **<** :ref:`RefCounted<class_RefCounted>` **<** :ref:`Object<class_Object>`

**Inherited By:** :ref:`AudioEffectBandLimitFilter<class_AudioEffectBandLimitFilter>`, :ref:`AudioEffectBandPassFilter<class_AudioEffectBandPassFilter>`, :ref:`AudioEffectHighPassFilter<class_AudioEffectHighPassFilter>`, :ref:`AudioEffectHighShelfFilter<class_AudioEffectHighShelfFilter>`, :ref:`AudioEffectLowPassFilter<class_AudioEffectLowPassFilter>`, :ref:`AudioEffectLowShelfFilter<class_AudioEffectLowShelfFilter>`, :ref:`AudioEffectNotchFilter<class_AudioEffectNotchFilter>`

Adds a filter to the audio bus.

.. rst-class:: classref-introduction-group

Description
-----------

Allows frequencies other than the :ref:`cutoff_hz<class_AudioEffectFilter_property_cutoff_hz>` to pass.

.. rst-class:: classref-introduction-group

Tutorials
---------

- :doc:`Audio buses <../tutorials/audio/audio_buses>`

.. rst-class:: classref-reftable-group

Properties
----------

.. table::
   :widths: auto

   +--------------------------------------------------+--------------------------------------------------------------+------------+
   | :ref:`float<class_float>`                        | :ref:`cutoff_hz<class_AudioEffectFilter_property_cutoff_hz>` | ``2000.0`` |
   +--------------------------------------------------+--------------------------------------------------------------+------------+
   | :ref:`FilterDB<enum_AudioEffectFilter_FilterDB>` | :ref:`db<class_AudioEffectFilter_property_db>`               | ``0``      |
   +--------------------------------------------------+--------------------------------------------------------------+------------+
   | :ref:`float<class_float>`                        | :ref:`gain<class_AudioEffectFilter_property_gain>`           | ``1.0``    |
   +--------------------------------------------------+--------------------------------------------------------------+------------+
   | :ref:`float<class_float>`                        | :ref:`resonance<class_AudioEffectFilter_property_resonance>` | ``0.5``    |
   +--------------------------------------------------+--------------------------------------------------------------+------------+

.. rst-class:: classref-section-separator

----

.. rst-class:: classref-descriptions-group

Enumerations
------------

.. _enum_AudioEffectFilter_FilterDB:

.. rst-class:: classref-enumeration

enum **FilterDB**:

.. _class_AudioEffectFilter_constant_FILTER_6DB:

.. rst-class:: classref-enumeration-constant

:ref:`FilterDB<enum_AudioEffectFilter_FilterDB>` **FILTER_6DB** = ``0``



.. _class_AudioEffectFilter_constant_FILTER_12DB:

.. rst-class:: classref-enumeration-constant

:ref:`FilterDB<enum_AudioEffectFilter_FilterDB>` **FILTER_12DB** = ``1``



.. _class_AudioEffectFilter_constant_FILTER_18DB:

.. rst-class:: classref-enumeration-constant

:ref:`FilterDB<enum_AudioEffectFilter_FilterDB>` **FILTER_18DB** = ``2``



.. _class_AudioEffectFilter_constant_FILTER_24DB:

.. rst-class:: classref-enumeration-constant

:ref:`FilterDB<enum_AudioEffectFilter_FilterDB>` **FILTER_24DB** = ``3``



.. rst-class:: classref-section-separator

----

.. rst-class:: classref-descriptions-group

Property Descriptions
---------------------

.. _class_AudioEffectFilter_property_cutoff_hz:

.. rst-class:: classref-property

:ref:`float<class_float>` **cutoff_hz** = ``2000.0``

.. rst-class:: classref-property-setget

- void **set_cutoff** **(** :ref:`float<class_float>` value **)**
- :ref:`float<class_float>` **get_cutoff** **(** **)**

Threshold frequency for the filter, in Hz.

.. rst-class:: classref-item-separator

----

.. _class_AudioEffectFilter_property_db:

.. rst-class:: classref-property

:ref:`FilterDB<enum_AudioEffectFilter_FilterDB>` **db** = ``0``

.. rst-class:: classref-property-setget

- void **set_db** **(** :ref:`FilterDB<enum_AudioEffectFilter_FilterDB>` value **)**
- :ref:`FilterDB<enum_AudioEffectFilter_FilterDB>` **get_db** **(** **)**

.. container:: contribute

	There is currently no description for this property. Please help us by :ref:`contributing one <doc_updating_the_class_reference>`!

.. rst-class:: classref-item-separator

----

.. _class_AudioEffectFilter_property_gain:

.. rst-class:: classref-property

:ref:`float<class_float>` **gain** = ``1.0``

.. rst-class:: classref-property-setget

- void **set_gain** **(** :ref:`float<class_float>` value **)**
- :ref:`float<class_float>` **get_gain** **(** **)**

Gain amount of the frequencies after the filter.

.. rst-class:: classref-item-separator

----

.. _class_AudioEffectFilter_property_resonance:

.. rst-class:: classref-property

:ref:`float<class_float>` **resonance** = ``0.5``

.. rst-class:: classref-property-setget

- void **set_resonance** **(** :ref:`float<class_float>` value **)**
- :ref:`float<class_float>` **get_resonance** **(** **)**

Amount of boost in the frequency range near the cutoff frequency.

.. |virtual| replace:: :abbr:`virtual (This method should typically be overridden by the user to have any effect.)`
.. |const| replace:: :abbr:`const (This method has no side effects. It doesn't modify any of the instance's member variables.)`
.. |vararg| replace:: :abbr:`vararg (This method accepts any number of arguments after the ones described here.)`
.. |constructor| replace:: :abbr:`constructor (This method is used to construct a type.)`
.. |static| replace:: :abbr:`static (This method doesn't need an instance to be called, so it can be called directly using the class name.)`
.. |operator| replace:: :abbr:`operator (This method describes a valid operator to use with this type as left-hand operand.)`