I am using python under VS. When running the following code

import librosa
from IPython.display import Audio
sr = 22050

y_sweep = librosa.chirp(fmin=librosa.note_to_hz('C3'),
                    fmax=librosa.note_to_hz('C5'),
                    sr=sr,
                    duration=5)

Audio(data=y_sweep, rate=sr)`

I CAN NOT hear any sound. The windows speakers are OK Volume is set loud. and the default player is Windows media player (works OK). I don't get any error message. On another similar code when using the

img = librosa.display.specshow 

(.... it works OK, but again with no actual sound.)

I was expecting to hear. The code is taken from .html#sphx-glr-auto-examples-plot-audio-playback-py. When using the play button on the above site, sound is correctly heard.

I am using python under VS. When running the following code

import librosa
from IPython.display import Audio
sr = 22050

y_sweep = librosa.chirp(fmin=librosa.note_to_hz('C3'),
                    fmax=librosa.note_to_hz('C5'),
                    sr=sr,
                    duration=5)

Audio(data=y_sweep, rate=sr)`

I CAN NOT hear any sound. The windows speakers are OK Volume is set loud. and the default player is Windows media player (works OK). I don't get any error message. On another similar code when using the

img = librosa.display.specshow 

(.... it works OK, but again with no actual sound.)

I was expecting to hear. The code is taken from https://librosa./doc/main/auto_examples/plot_audio_playback.html#sphx-glr-auto-examples-plot-audio-playback-py. When using the play button on the above site, sound is correctly heard.

• python
• voice
• librosa

1 Answer 1

IPython audio playback works only in Jupyter Notebooks. If you run standard Python, you need some other solution for playing audio. sounddevice is suitable for you, it can play audio from a numpy array

Install via pip:

$ pip install sounddevice

Then replace IPython Audio(...) with sounddevice audio playing:

import librosa
import sounddevice

sr = 22050

y_sweep = librosa.chirp(
    fmin=librosa.note_to_hz("C3"), fmax=librosa.note_to_hz("C5"), sr=sr, duration=5
)

sounddevice.play(data=y_sweep, samplerate=sr)
sounddevice.wait() # don't fet to wait for audio playback to complete