Voice recorder in python step by step with example

Voice recorder in python step by step with example 

Here is a step-by-step guide on how to create a simple voice recorder using Python:

Install the sounddevice and numpy libraries by running pip install sounddevice numpy in your command line.

Create a new Python script and import the sounddevice and numpy libraries by adding the following lines at the top of your script:

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import sounddevice as sd

import numpy as np

Set the recording parameters, such as the sample rate, number of channels, and the length of the recording. For example, you can set the sample rate to 44100 Hz and the number of channels to 1 (mono) for a 10-second recording:

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fs = 44100 # Sample rate

channels = 1 # Number of channels

duration = 10 # Recording duration in seconds

Use the sounddevice.rec() function to start the recording. The function takes a few parameters, such as the number of samples to record and the sample rate, and returns the recorded data as a NumPy array. The following code snippet shows how to record for the specified duration:

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recording = sd.rec(int(fs * duration), samplerate=fs, channels=channels)

Use the sounddevice.wait() function to wait until the recording is finished.

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sd.wait()

Save the recorded data to a file using the numpy.save() function. You can save the data in a file format such as WAV. Here's an example of how to do this:

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np.save("recording.npy", recording) # Save the recorded data to a .npy file

You can also use the scipy.io.wavfile.write() function to write the recording data to a .wav file.

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from scipy.io.wavfile import write

write("recording.wav", fs, recording)

#To play the recorded sound

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sd.play(recording)

This is just an example of how you can create a simple voice recorder using Python. The code can be adjusted and expanded upon to include additional functionality such as the ability to pause and resume recording, or the ability to record in different file formats.