How to write speaker output to a file sounddevice

user_13319888 0
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Is there a way that I can use the python library sounddevice to write the output through my speakers to a file? For example if I were to play any sounds through my computer they would be written to a mp4/wav file.

python-sounddevice audio-recording audio python-3.x python
2 Answers

You can just specify the output device - for example:

import sounddevice as REC
REC.default.device = 'Speakers (Realtek High Definition Audio), Windows DirectSound'

To get all the sound devices that sounddevice recognizes you can use this command in ur command line:

this:    py -m sounddevice
or this: python -m sounddevice
or this: python3 -m sounddevice

working code for me:

from scipy.io.wavfile import wavWrite
import sounddevice as REC

# Recording properties
SAMPLE_RATE = 44100
SECONDS = 10

# Channels
MONO    = 1
STEREO  = 2

# Command to get all devices listed: py -m sounddevice 
# Device you want to record
REC.default.device = 'VoiceMeeter VAIO3 Output (VB-Audio VoiceMeeter VAIO3), Windows DirectSound'

print(f'Recording for {SECONDS} seconds')

# Starts recording
recording = REC.rec( int(SECONDS * SAMPLE_RATE), samplerate = SAMPLE_RATE, channels = MONO)
REC.wait()  # Waits for recording to finish

# Writes recorded data in to the wave file
wavWrite('recording.wav', SAMPLE_RATE, recording)
user_152390860

This is a solution: (See comments)

import sounddevice as sd
from scipy.io.wavfile import write

fs = 44100  # Sample rate
seconds = 3  # Duration of recording
sd.default.device = 'digital output'  # Speakers full name here

myrecording = sd.rec(int(seconds * fs), samplerate=fs, channels=2)
sd.wait()  # Wait until recording is finished
write('output.wav', fs, myrecording)  # Save as WAV file

The above code was from: https://realpython.com/playing-and-recording-sound-python/#python-sounddevice_1 which is a full tutorial in sound in python and how to record and play sound.

user_134761300
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