Build Your Own Voice Recorder with Python

In this tutorial, we will learn how to create a simple voice recorder using Python. This project will allow you to record audio using your computer’s microphone and save it as a digital audio file. This can be a fun and useful project to experiment with different Python libraries, as well as build your skills in programming and audio processing.

Requirements

Before we get started, make sure you have the following libraries installed:

• pyaudio
• wave

Steps to Create a Voice Recorder

1. Import the necessary libraries:


import pyaudio
import wave


2. Set up the recording parameters:


chunk = 1024
FORMAT = pyaudio.paInt16
CHANNELS = 1
RATE = 44100
RECORD_SECONDS = 5
WAVE_OUTPUT_FILENAME = "output.wav"


3. Initialize PyAudio:


p = pyaudio.PyAudio()


4. Open a stream to capture audio:


stream = p.open(format=FORMAT,
channels=CHANNELS,
rate=RATE,
input=True,
frames_per_buffer=chunk)


5. Start recording and save the audio:


frames = []

for i in range(0, int(RATE / chunk * RECORD_SECONDS)):
data = stream.read(chunk)
frames.append(data)

stream.stop_stream()
stream.close()
p.terminate()

wf = wave.open(WAVE_OUTPUT_FILENAME, 'wb')
wf.setnchannels(CHANNELS)
wf.setsampwidth(p.get_sample_size(FORMAT))
wf.setframerate(RATE)
wf.writeframes(b''.join(frames))
wf.close()


Conclusion

Congratulations! You have successfully created your own voice recorder using Python. You can now experiment with different recording parameters, add features like audio compression or real-time processing, and even create a simple GUI for your recorder. This project is a great way to learn more about audio processing and Python programming. Have fun and happy coding!