Add an easy way to play audio files about colabtools

[korakot]

I followed the rich output example, and it works for me.

from IPython.display import Audio
Audio(url="http://www.nch.com.au/acm/8k16bitpcm.wav")

This one generates 2 sine waves.

import numpy as np
max_time = 3
f1 = 220.0
f2 = 224.0
rate = 8000.0
L = 3
times = np.linspace(0,L,rate*L)
signal = np.sin(2*np.pi*f1*times) + np.sin(2*np.pi*f2*times)

Audio(data=signal, rate=rate)

[korakot]

I have tried and found 2 methods to play midi in Colab.
The simpler one is to convert midi to wav as in this gist.

Another one use midi.js to play midi file directly.
See my "unorganized" notebook. (a few failures with other methods)
https://colab.research.google.com/drive/1iliUIN1Jn8552XEiYBYEYimSm7yiOJ8x

[deepakee13]

How do we play sound using numpy data through python file on Notebook in google colab?

[gschennerg]

Hi,
I still struggle to play a midi file in a colaboratory notebook. All the examples i found so far are jupyter notebooks (with music21 for example) that require the installation of some additional programs like musescore etc. on the local machine to play the midi files. These notebooks did not work in the colaboratory environment.
Has anybody succeeded to play a midi-file in the colaboratory environment? It would be nice to see such a notebook (with all the required installation steps apt-get...).

[gschennerg]

This is great! With your code i was able to play a midi file (i.e. convert to wav and show it in the notebook) like this:

!apt install fluidsynth
!cp /usr/share/sounds/sf2/FluidR3_GM.sf2 ./font.sf2
!pip install midi2audio
from midi2audio import FluidSynth
from IPython.display import Audio

FluidSynth("font.sf2").midi_to_audio('test.midi', 'test.wav')
Audio("test.wav")

Thanks a lot!

[kungkingc]

thanks this really helped :)

[lidija-jovanovska]

This really works. Thanks so much!