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Load an audio sound and play it with:

from kivy.core.audio import SoundLoader

sound = SoundLoader.load('mytest.wav')
if sound:
    print("Sound found at %s" % sound.source)
    print("Sound is %.3f seconds" % sound.length)

You should not use the Sound class directly. The class returned by SoundLoader.load will be the best sound provider for that particular file type, so it might return different Sound classes depending the file type.

Changed in version 1.8.0: There are now 2 distinct Gstreamer implementations: one using Gi/Gst working for both Python 2+3 with Gstreamer 1.0, and one using PyGST working only for Python 2 + Gstreamer 0.10. If you have issue with GStreamer, have a look at GStreamer compatibility


The core audio library does not support recording audio. If you require this functionality, please refer to the audiostream extension.

class kivy.core.audio.Sound[source]

Bases: kivy.event.EventDispatcher

Represents a sound to play. This class is abstract, and cannot be used directly.

Use SoundLoader to load a sound.

Events :
on_play : None

Fired when the sound is played.

on_stop : None

Fired when the sound is stopped.


Deprecated since version 1.3.0: Use source instead.


Returns the current position of the audio file. Returns 0 if not playing.

New in version 1.4.1.


Get length of the sound (in seconds).


Load the file into memory.


Set to True if the sound should automatically loop when it finishes.

New in version 1.8.0.

loop is a BooleanProperty and defaults to False.


Play the file.


Go to the <position> (in seconds).


Filename / source of your audio file.

New in version 1.3.0.

source is a StringProperty that defaults to None and is read-only. Use the SoundLoader.load() for loading audio.


State of the sound, one of ‘stop’ or ‘play’.

New in version 1.3.0.

state is a read-only OptionProperty.


Deprecated since version 1.3.0: Use state instead.


Stop playback.


Unload the file from memory.


Volume, in the range 0-1. 1 means full volume, 0 means mute.

New in version 1.3.0.

volume is a NumericProperty and defaults to 1.

class kivy.core.audio.SoundLoader[source]

Load a sound, using the best loader for the given file type.

static load(filename)[source]

Load a sound, and return a Sound() instance.

static register(classobj)[source]

Register a new class to load the sound.