godot-docs/classes/class_audiostreamplayer3d.rst

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.. DO NOT EDIT THIS FILE, but the AudioStreamPlayer3D.xml source instead.
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.. _class_AudioStreamPlayer3D:

AudioStreamPlayer3D
===================

**Inherits:** :ref:`Spatial<class_Spatial>` **<** :ref:`Node<class_Node>` **<** :ref:`Object<class_Object>`

Plays positional sound in 3D space.

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

Plays a sound effect with directed sound effects, dampens with distance if needed, generates effect of hearable position in space. For greater realism, a low-pass filter is automatically applied to distant sounds. This can be disabled by setting :ref:`attenuation_filter_cutoff_hz<class_AudioStreamPlayer3D_property_attenuation_filter_cutoff_hz>` to ``20500``.

By default, audio is heard from the camera position. This can be changed by adding a :ref:`Listener<class_Listener>` node to the scene and enabling it by calling :ref:`Listener.make_current<class_Listener_method_make_current>` on it.

See also :ref:`AudioStreamPlayer<class_AudioStreamPlayer>` to play a sound non-positionally.

**Note:** Hiding an ``AudioStreamPlayer3D`` node does not disable its audio output. To temporarily disable an ``AudioStreamPlayer3D``'s audio output, set :ref:`unit_db<class_AudioStreamPlayer3D_property_unit_db>` to a very low value like ``-100`` (which isn't audible to human hearing).

Tutorials
---------

- :doc:`../tutorials/audio/audio_streams`

Properties
----------

+--------------------------------------------------------------------+----------------------------------------------------------------------------------------------------------------------+--------------+
| :ref:`int<class_int>`                                              | :ref:`area_mask<class_AudioStreamPlayer3D_property_area_mask>`                                                       | ``1``        |
+--------------------------------------------------------------------+----------------------------------------------------------------------------------------------------------------------+--------------+
| :ref:`float<class_float>`                                          | :ref:`attenuation_filter_cutoff_hz<class_AudioStreamPlayer3D_property_attenuation_filter_cutoff_hz>`                 | ``5000.0``   |
+--------------------------------------------------------------------+----------------------------------------------------------------------------------------------------------------------+--------------+
| :ref:`float<class_float>`                                          | :ref:`attenuation_filter_db<class_AudioStreamPlayer3D_property_attenuation_filter_db>`                               | ``-24.0``    |
+--------------------------------------------------------------------+----------------------------------------------------------------------------------------------------------------------+--------------+
| :ref:`AttenuationModel<enum_AudioStreamPlayer3D_AttenuationModel>` | :ref:`attenuation_model<class_AudioStreamPlayer3D_property_attenuation_model>`                                       | ``0``        |
+--------------------------------------------------------------------+----------------------------------------------------------------------------------------------------------------------+--------------+
| :ref:`bool<class_bool>`                                            | :ref:`autoplay<class_AudioStreamPlayer3D_property_autoplay>`                                                         | ``false``    |
+--------------------------------------------------------------------+----------------------------------------------------------------------------------------------------------------------+--------------+
| :ref:`String<class_String>`                                        | :ref:`bus<class_AudioStreamPlayer3D_property_bus>`                                                                   | ``"Master"`` |
+--------------------------------------------------------------------+----------------------------------------------------------------------------------------------------------------------+--------------+
| :ref:`DopplerTracking<enum_AudioStreamPlayer3D_DopplerTracking>`   | :ref:`doppler_tracking<class_AudioStreamPlayer3D_property_doppler_tracking>`                                         | ``0``        |
+--------------------------------------------------------------------+----------------------------------------------------------------------------------------------------------------------+--------------+
| :ref:`float<class_float>`                                          | :ref:`emission_angle_degrees<class_AudioStreamPlayer3D_property_emission_angle_degrees>`                             | ``45.0``     |
+--------------------------------------------------------------------+----------------------------------------------------------------------------------------------------------------------+--------------+
| :ref:`bool<class_bool>`                                            | :ref:`emission_angle_enabled<class_AudioStreamPlayer3D_property_emission_angle_enabled>`                             | ``false``    |
+--------------------------------------------------------------------+----------------------------------------------------------------------------------------------------------------------+--------------+
| :ref:`float<class_float>`                                          | :ref:`emission_angle_filter_attenuation_db<class_AudioStreamPlayer3D_property_emission_angle_filter_attenuation_db>` | ``-12.0``    |
+--------------------------------------------------------------------+----------------------------------------------------------------------------------------------------------------------+--------------+
| :ref:`float<class_float>`                                          | :ref:`max_db<class_AudioStreamPlayer3D_property_max_db>`                                                             | ``3.0``      |
+--------------------------------------------------------------------+----------------------------------------------------------------------------------------------------------------------+--------------+
| :ref:`float<class_float>`                                          | :ref:`max_distance<class_AudioStreamPlayer3D_property_max_distance>`                                                 | ``0.0``      |
+--------------------------------------------------------------------+----------------------------------------------------------------------------------------------------------------------+--------------+
| :ref:`OutOfRangeMode<enum_AudioStreamPlayer3D_OutOfRangeMode>`     | :ref:`out_of_range_mode<class_AudioStreamPlayer3D_property_out_of_range_mode>`                                       | ``0``        |
+--------------------------------------------------------------------+----------------------------------------------------------------------------------------------------------------------+--------------+
| :ref:`float<class_float>`                                          | :ref:`pitch_scale<class_AudioStreamPlayer3D_property_pitch_scale>`                                                   | ``1.0``      |
+--------------------------------------------------------------------+----------------------------------------------------------------------------------------------------------------------+--------------+
| :ref:`bool<class_bool>`                                            | :ref:`playing<class_AudioStreamPlayer3D_property_playing>`                                                           | ``false``    |
+--------------------------------------------------------------------+----------------------------------------------------------------------------------------------------------------------+--------------+
| :ref:`AudioStream<class_AudioStream>`                              | :ref:`stream<class_AudioStreamPlayer3D_property_stream>`                                                             |              |
+--------------------------------------------------------------------+----------------------------------------------------------------------------------------------------------------------+--------------+
| :ref:`bool<class_bool>`                                            | :ref:`stream_paused<class_AudioStreamPlayer3D_property_stream_paused>`                                               | ``false``    |
+--------------------------------------------------------------------+----------------------------------------------------------------------------------------------------------------------+--------------+
| :ref:`float<class_float>`                                          | :ref:`unit_db<class_AudioStreamPlayer3D_property_unit_db>`                                                           | ``0.0``      |
+--------------------------------------------------------------------+----------------------------------------------------------------------------------------------------------------------+--------------+
| :ref:`float<class_float>`                                          | :ref:`unit_size<class_AudioStreamPlayer3D_property_unit_size>`                                                       | ``1.0``      |
+--------------------------------------------------------------------+----------------------------------------------------------------------------------------------------------------------+--------------+

Methods
-------

+-------------------------------------------------------+------------------------------------------------------------------------------------------------------------+
| :ref:`float<class_float>`                             | :ref:`get_playback_position<class_AudioStreamPlayer3D_method_get_playback_position>` **(** **)**           |
+-------------------------------------------------------+------------------------------------------------------------------------------------------------------------+
| :ref:`AudioStreamPlayback<class_AudioStreamPlayback>` | :ref:`get_stream_playback<class_AudioStreamPlayer3D_method_get_stream_playback>` **(** **)**               |
+-------------------------------------------------------+------------------------------------------------------------------------------------------------------------+
| void                                                  | :ref:`play<class_AudioStreamPlayer3D_method_play>` **(** :ref:`float<class_float>` from_position=0.0 **)** |
+-------------------------------------------------------+------------------------------------------------------------------------------------------------------------+
| void                                                  | :ref:`seek<class_AudioStreamPlayer3D_method_seek>` **(** :ref:`float<class_float>` to_position **)**       |
+-------------------------------------------------------+------------------------------------------------------------------------------------------------------------+
| void                                                  | :ref:`stop<class_AudioStreamPlayer3D_method_stop>` **(** **)**                                             |
+-------------------------------------------------------+------------------------------------------------------------------------------------------------------------+

Signals
-------

.. _class_AudioStreamPlayer3D_signal_finished:

- **finished** **(** **)**

Emitted when the audio stops playing.

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

.. _enum_AudioStreamPlayer3D_AttenuationModel:

.. _class_AudioStreamPlayer3D_constant_ATTENUATION_INVERSE_DISTANCE:

.. _class_AudioStreamPlayer3D_constant_ATTENUATION_INVERSE_SQUARE_DISTANCE:

.. _class_AudioStreamPlayer3D_constant_ATTENUATION_LOGARITHMIC:

.. _class_AudioStreamPlayer3D_constant_ATTENUATION_DISABLED:

enum **AttenuationModel**:

- **ATTENUATION_INVERSE_DISTANCE** = **0** --- Linear dampening of loudness according to distance.

- **ATTENUATION_INVERSE_SQUARE_DISTANCE** = **1** --- Squared dampening of loudness according to distance.

- **ATTENUATION_LOGARITHMIC** = **2** --- Logarithmic dampening of loudness according to distance.

- **ATTENUATION_DISABLED** = **3** --- No dampening of loudness according to distance. The sound will still be heard positionally, unlike an :ref:`AudioStreamPlayer<class_AudioStreamPlayer>`. :ref:`ATTENUATION_DISABLED<class_AudioStreamPlayer3D_constant_ATTENUATION_DISABLED>` can be combined with a :ref:`max_distance<class_AudioStreamPlayer3D_property_max_distance>` value greater than ``0.0`` to achieve linear attenuation clamped to a sphere of a defined size.

----

.. _enum_AudioStreamPlayer3D_OutOfRangeMode:

.. _class_AudioStreamPlayer3D_constant_OUT_OF_RANGE_MIX:

.. _class_AudioStreamPlayer3D_constant_OUT_OF_RANGE_PAUSE:

enum **OutOfRangeMode**:

- **OUT_OF_RANGE_MIX** = **0** --- Mix this audio in, even when it's out of range. This increases CPU usage, but keeps the sound playing at the correct position if the camera leaves and enters the ``AudioStreamPlayer3D``'s :ref:`max_distance<class_AudioStreamPlayer3D_property_max_distance>` radius.

- **OUT_OF_RANGE_PAUSE** = **1** --- Pause this audio when it gets out of range. This decreases CPU usage, but will cause the sound to restart if the camera leaves and enters the ``AudioStreamPlayer3D``'s :ref:`max_distance<class_AudioStreamPlayer3D_property_max_distance>` radius.

----

.. _enum_AudioStreamPlayer3D_DopplerTracking:

.. _class_AudioStreamPlayer3D_constant_DOPPLER_TRACKING_DISABLED:

.. _class_AudioStreamPlayer3D_constant_DOPPLER_TRACKING_IDLE_STEP:

.. _class_AudioStreamPlayer3D_constant_DOPPLER_TRACKING_PHYSICS_STEP:

enum **DopplerTracking**:

- **DOPPLER_TRACKING_DISABLED** = **0** --- Disables doppler tracking.

- **DOPPLER_TRACKING_IDLE_STEP** = **1** --- Executes doppler tracking in idle step (every rendered frame).

- **DOPPLER_TRACKING_PHYSICS_STEP** = **2** --- Executes doppler tracking in physics step (every simulated physics frame).

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

.. _class_AudioStreamPlayer3D_property_area_mask:

- :ref:`int<class_int>` **area_mask**

+-----------+----------------------+
| *Default* | ``1``                |
+-----------+----------------------+
| *Setter*  | set_area_mask(value) |
+-----------+----------------------+
| *Getter*  | get_area_mask()      |
+-----------+----------------------+

Determines which :ref:`Area<class_Area>` layers affect the sound for reverb and audio bus effects. Areas can be used to redirect :ref:`AudioStream<class_AudioStream>`\ s so that they play in a certain audio bus. An example of how you might use this is making a "water" area so that sounds played in the water are redirected through an audio bus to make them sound like they are being played underwater.

----

.. _class_AudioStreamPlayer3D_property_attenuation_filter_cutoff_hz:

- :ref:`float<class_float>` **attenuation_filter_cutoff_hz**

+-----------+-----------------------------------------+
| *Default* | ``5000.0``                              |
+-----------+-----------------------------------------+
| *Setter*  | set_attenuation_filter_cutoff_hz(value) |
+-----------+-----------------------------------------+
| *Getter*  | get_attenuation_filter_cutoff_hz()      |
+-----------+-----------------------------------------+

Dampens audio using a low-pass filter above this frequency, in Hz. To disable the dampening effect entirely, set this to ``20500`` as this frequency is above the human hearing limit.

----

.. _class_AudioStreamPlayer3D_property_attenuation_filter_db:

- :ref:`float<class_float>` **attenuation_filter_db**

+-----------+----------------------------------+
| *Default* | ``-24.0``                        |
+-----------+----------------------------------+
| *Setter*  | set_attenuation_filter_db(value) |
+-----------+----------------------------------+
| *Getter*  | get_attenuation_filter_db()      |
+-----------+----------------------------------+

Amount how much the filter affects the loudness, in decibels.

----

.. _class_AudioStreamPlayer3D_property_attenuation_model:

- :ref:`AttenuationModel<enum_AudioStreamPlayer3D_AttenuationModel>` **attenuation_model**

+-----------+------------------------------+
| *Default* | ``0``                        |
+-----------+------------------------------+
| *Setter*  | set_attenuation_model(value) |
+-----------+------------------------------+
| *Getter*  | get_attenuation_model()      |
+-----------+------------------------------+

Decides if audio should get quieter with distance linearly, quadratically, logarithmically, or not be affected by distance, effectively disabling attenuation.

----

.. _class_AudioStreamPlayer3D_property_autoplay:

- :ref:`bool<class_bool>` **autoplay**

+-----------+-----------------------+
| *Default* | ``false``             |
+-----------+-----------------------+
| *Setter*  | set_autoplay(value)   |
+-----------+-----------------------+
| *Getter*  | is_autoplay_enabled() |
+-----------+-----------------------+

If ``true``, audio plays when the AudioStreamPlayer3D node is added to scene tree.

----

.. _class_AudioStreamPlayer3D_property_bus:

- :ref:`String<class_String>` **bus**

+-----------+----------------+
| *Default* | ``"Master"``   |
+-----------+----------------+
| *Setter*  | set_bus(value) |
+-----------+----------------+
| *Getter*  | get_bus()      |
+-----------+----------------+

The bus on which this audio is playing.

----

.. _class_AudioStreamPlayer3D_property_doppler_tracking:

- :ref:`DopplerTracking<enum_AudioStreamPlayer3D_DopplerTracking>` **doppler_tracking**

+-----------+-----------------------------+
| *Default* | ``0``                       |
+-----------+-----------------------------+
| *Setter*  | set_doppler_tracking(value) |
+-----------+-----------------------------+
| *Getter*  | get_doppler_tracking()      |
+-----------+-----------------------------+

Decides in which step the `Doppler effect <https://en.wikipedia.org/wiki/Doppler_effect>`__ should be calculated.

**Note:** Only effective if the current :ref:`Camera<class_Camera>`'s :ref:`Camera.doppler_tracking<class_Camera_property_doppler_tracking>` property is set to a value other than :ref:`Camera.DOPPLER_TRACKING_DISABLED<class_Camera_constant_DOPPLER_TRACKING_DISABLED>`.

----

.. _class_AudioStreamPlayer3D_property_emission_angle_degrees:

- :ref:`float<class_float>` **emission_angle_degrees**

+-----------+---------------------------+
| *Default* | ``45.0``                  |
+-----------+---------------------------+
| *Setter*  | set_emission_angle(value) |
+-----------+---------------------------+
| *Getter*  | get_emission_angle()      |
+-----------+---------------------------+

The angle in which the audio reaches cameras undampened.

----

.. _class_AudioStreamPlayer3D_property_emission_angle_enabled:

- :ref:`bool<class_bool>` **emission_angle_enabled**

+-----------+-----------------------------------+
| *Default* | ``false``                         |
+-----------+-----------------------------------+
| *Setter*  | set_emission_angle_enabled(value) |
+-----------+-----------------------------------+
| *Getter*  | is_emission_angle_enabled()       |
+-----------+-----------------------------------+

If ``true``, the audio should be dampened according to the direction of the sound.

----

.. _class_AudioStreamPlayer3D_property_emission_angle_filter_attenuation_db:

- :ref:`float<class_float>` **emission_angle_filter_attenuation_db**

+-----------+-------------------------------------------------+
| *Default* | ``-12.0``                                       |
+-----------+-------------------------------------------------+
| *Setter*  | set_emission_angle_filter_attenuation_db(value) |
+-----------+-------------------------------------------------+
| *Getter*  | get_emission_angle_filter_attenuation_db()      |
+-----------+-------------------------------------------------+

Dampens audio if camera is outside of :ref:`emission_angle_degrees<class_AudioStreamPlayer3D_property_emission_angle_degrees>` and :ref:`emission_angle_enabled<class_AudioStreamPlayer3D_property_emission_angle_enabled>` is set by this factor, in decibels.

----

.. _class_AudioStreamPlayer3D_property_max_db:

- :ref:`float<class_float>` **max_db**

+-----------+-------------------+
| *Default* | ``3.0``           |
+-----------+-------------------+
| *Setter*  | set_max_db(value) |
+-----------+-------------------+
| *Getter*  | get_max_db()      |
+-----------+-------------------+

Sets the absolute maximum of the soundlevel, in decibels.

----

.. _class_AudioStreamPlayer3D_property_max_distance:

- :ref:`float<class_float>` **max_distance**

+-----------+-------------------------+
| *Default* | ``0.0``                 |
+-----------+-------------------------+
| *Setter*  | set_max_distance(value) |
+-----------+-------------------------+
| *Getter*  | get_max_distance()      |
+-----------+-------------------------+

Sets the distance from which the :ref:`out_of_range_mode<class_AudioStreamPlayer3D_property_out_of_range_mode>` takes effect. Has no effect if set to 0.

----

.. _class_AudioStreamPlayer3D_property_out_of_range_mode:

- :ref:`OutOfRangeMode<enum_AudioStreamPlayer3D_OutOfRangeMode>` **out_of_range_mode**

+-----------+------------------------------+
| *Default* | ``0``                        |
+-----------+------------------------------+
| *Setter*  | set_out_of_range_mode(value) |
+-----------+------------------------------+
| *Getter*  | get_out_of_range_mode()      |
+-----------+------------------------------+

Decides if audio should pause when source is outside of :ref:`max_distance<class_AudioStreamPlayer3D_property_max_distance>` range.

----

.. _class_AudioStreamPlayer3D_property_pitch_scale:

- :ref:`float<class_float>` **pitch_scale**

+-----------+------------------------+
| *Default* | ``1.0``                |
+-----------+------------------------+
| *Setter*  | set_pitch_scale(value) |
+-----------+------------------------+
| *Getter*  | get_pitch_scale()      |
+-----------+------------------------+

The pitch and the tempo of the audio, as a multiplier of the audio sample's sample rate.

----

.. _class_AudioStreamPlayer3D_property_playing:

- :ref:`bool<class_bool>` **playing**

+-----------+--------------+
| *Default* | ``false``    |
+-----------+--------------+
| *Getter*  | is_playing() |
+-----------+--------------+

If ``true``, audio is playing.

----

.. _class_AudioStreamPlayer3D_property_stream:

- :ref:`AudioStream<class_AudioStream>` **stream**

+----------+-------------------+
| *Setter* | set_stream(value) |
+----------+-------------------+
| *Getter* | get_stream()      |
+----------+-------------------+

The :ref:`AudioStream<class_AudioStream>` resource to be played.

----

.. _class_AudioStreamPlayer3D_property_stream_paused:

- :ref:`bool<class_bool>` **stream_paused**

+-----------+--------------------------+
| *Default* | ``false``                |
+-----------+--------------------------+
| *Setter*  | set_stream_paused(value) |
+-----------+--------------------------+
| *Getter*  | get_stream_paused()      |
+-----------+--------------------------+

If ``true``, the playback is paused. You can resume it by setting :ref:`stream_paused<class_AudioStreamPlayer3D_property_stream_paused>` to ``false``.

----

.. _class_AudioStreamPlayer3D_property_unit_db:

- :ref:`float<class_float>` **unit_db**

+-----------+--------------------+
| *Default* | ``0.0``            |
+-----------+--------------------+
| *Setter*  | set_unit_db(value) |
+-----------+--------------------+
| *Getter*  | get_unit_db()      |
+-----------+--------------------+

The base sound level unaffected by dampening, in decibels.

----

.. _class_AudioStreamPlayer3D_property_unit_size:

- :ref:`float<class_float>` **unit_size**

+-----------+----------------------+
| *Default* | ``1.0``              |
+-----------+----------------------+
| *Setter*  | set_unit_size(value) |
+-----------+----------------------+
| *Getter*  | get_unit_size()      |
+-----------+----------------------+

The factor for the attenuation effect. Higher values make the sound audible over a larger distance.

Method Descriptions
-------------------

.. _class_AudioStreamPlayer3D_method_get_playback_position:

- :ref:`float<class_float>` **get_playback_position** **(** **)**

Returns the position in the :ref:`AudioStream<class_AudioStream>`.

----

.. _class_AudioStreamPlayer3D_method_get_stream_playback:

- :ref:`AudioStreamPlayback<class_AudioStreamPlayback>` **get_stream_playback** **(** **)**

Returns the :ref:`AudioStreamPlayback<class_AudioStreamPlayback>` object associated with this ``AudioStreamPlayer3D``.

----

.. _class_AudioStreamPlayer3D_method_play:

- void **play** **(** :ref:`float<class_float>` from_position=0.0 **)**

Plays the audio from the given position ``from_position``, in seconds.

----

.. _class_AudioStreamPlayer3D_method_seek:

- void **seek** **(** :ref:`float<class_float>` to_position **)**

Sets the position from which audio will be played, in seconds.

----

.. _class_AudioStreamPlayer3D_method_stop:

- void **stop** **(** **)**

Stops the audio.

.. |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.)`