Python can be used to perform a variety of tasks. One of them is creating a voice recorder. We can use python’s sounddevice module to record and play audio. This module along with the wavio or the scipy module provides the way to save recorded audio.
- sounddevice: This module provides functions to play and record NumPy arrays containing audio signals. Let’s install it by running the following command:
$ pip3 install sounddevice
- We can use either wavio and scipy to save the recorded audio in file format. We will see both of them here.
- To install wavio:
$ pip3 install wavio
- To install scipy:
$ pip3 install scipy
Now, we are done with installing the required modules. So, let’s write the code.
First, import the required libraries.
# import required libraries import sounddevice as sd from scipy.io.wavfile import write import wavio as wv
Now, before starting the recorder, we have to declare a few variables. The first one is the sampling frequency of the audio (in most cases this will be 44100 or 48000 frames per second) and the second is recording duration. We have to specify the duration in seconds so that it stops recording after that duration.
So, let’s declare them too.
# Sampling frequency freq = 44100 # Recording duration duration = 5
Now, we are ready to start the recorder. It will create a NumPy array of the recorded audio.
# Start recorder with the given values of # duration and sample frequency recording = sd.rec(int(duration * freq), samplerate=freq, channels=2) # Record audio for the given number of seconds sd.wait()
Now, we are done with recording the audio. So, let’s save it. To save the audio file, we can either use the scipy module or the wavio module. Let’s go through them one by one.
We will use the write function from scipy.io.wavfile to convert the NumPy array to an audio file.
# This will convert the NumPy array to an audio # file with the given sampling frequency write("recording0.wav", freq, recording)
We can also use the write function from the wavio library.
# Convert the NumPy array to audio file wv.write("recording1.wav", recording, freq, sampwidth=2)
Attention geek! Strengthen your foundations with the Python Programming Foundation Course and learn the basics.
To begin with, your interview preparations Enhance your Data Structures concepts with the Python DS Course.
- Build a Voice Recorder GUI using Python
- Create a Screen recorder using Python
- Voice search Wikipedia using Python
- Python Script to Shutdown your PC using Voice Commands
- Voice Assistant using python
- Text-To-Speech changing voice in Python
- Personal Voice Assistant in Python
- wxPython - Create Radio Button using Create() function
- wxPython - Create Static Box using Create() method
- Python | Create video using multiple images using OpenCV
- Python | Create a stopwatch using clock object in kivy using .kv file
- Create simple Blockchain using Python
- Create a stopwatch using python
- Python | Create and write on excel file using xlsxwriter module
- Create XML Documents using Python
- Python | Create a dictionary using list with none values
- Python | Create a digital clock using Tkinter
- Python | Create Box Layout widget using .kv file
- Python | Create checkbox using .kv file
- Python Tkinter | Create different type of lines using Canvas class
If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.geeksforgeeks.org or mail your article to firstname.lastname@example.org. See your article appearing on the GeeksforGeeks main page and help other Geeks.
Please Improve this article if you find anything incorrect by clicking on the "Improve Article" button below.