I would like to be able to play a sound file in a ipython notebook. My aim is to be able to listen to the results of different treatments applied to a sound directly from within the notebook. Is this possible? If yes, what is the best solution to do so?
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5 Answers
The previous answer is pretty old. You can use IPython.display.Audio now. Like this:
import IPython IPython.display.Audio("my_audio_file.mp3") Note that you can also process any type of audio content, and pass it to this function as a numpy array.
If you want to display multiple audio files, use the following:
IPython.display.display(IPython.display.Audio("my_audio_file.mp3")) IPython.display.display(IPython.display.Audio("my_audio_file.mp3")) 
1 Comment
VSZM
Worth noting that if you want the sound to actually play automatically, then add the
autoplay=True parameter. Like this: IPython.display.Audio("my_audio_file.mp3", autoplay=True)A small example that might be relevant : http://nbviewer.org/5507501/the%20sound%20of%20hydrogen.ipynb
it should be possible to avoid gooing through external files by base64 encoding as for PNG/jpg...
6 Comments
user1436340
Thanks for your answer, I don't manage using external files. (despite changing path, I get WARNING:root:404 GET /files/440.wav (127.0.0.1) ). I'll have a look at how to avoid the use of external file.
Just M
Hum, weird, have you change CWD ? when you run the notebook, is the 440.wav file created ?
user1436340
Sorry for the delay. I was using an old version of ipython. Everything works great now. Having player directly in notebook is very neat to play around with sounds
Just M
Btw, I updated (a few hours ago) to avoid going through the file system : nbviewer.ipython.org/urls/raw.github.com/Carreau/posts/master/… happy coincidence :-)
kerim
@Matt: why do you need to reimplement scipy.io.wavfile.write? It accepts string buffer already... I.e.
buffer = StringIO.StringIO();wavfile.write(buffer, sample_rate, samples) |
The code:
import IPython IPython.display.Audio("my_audio_file.mp3") may give an error of "Invalid Source" in IE11, try in other browsers it should work fine.
Comments
If the sound you are looking for could be also a "Text-to-Speech", I would like to mention that every time a start some long process in the background, I queue the execution of a cell like this too:
from IPython.display import clear_output, display, HTML, Javascript display(Javascript(""" var msg = new SpeechSynthesisUtterance(); msg.text = "Process completed!"; window.speechSynthesis.speak(msg); """)) You can change the text you want to hear with msg.text.
Comments
The other available answers added an HTML element which I disliked, so I created the ringbell, which gets you both play a custom sound as such:
from ringbell import RingBell RingBell( sample = "path/to/sample.wav", minimum_execution_time = 0, verbose = True ) and it also gets you a one-lines to play a bell when a cell execution takes more than 1 minute (or a custom amount of time for that matter) or is fails with an exception:
import ringbell.auto You can install this package from PyPI:
pip install ringbell 