Build a Voice Recorder GUI using Python

Prerequisites: Python GUI – tkinter, Create a Voice Recorder using Python

Python provides various tools and can be used for various purposes. One such purpose is recording voice. It can be done using the sounddevice module. This recorded file can be saved using the soundfile module

Module Needed

• Sounddevice: The sounddevice module provides bindings for the PortAudio library and a few convenience functions to play and record NumPy arrays containing audio signals. To install this type the below command in the terminal.

pip install sounddevice

• SoundFile:  SoundFile can read and write sound files. To install this type the below command in the terminal.

pip install SoundFile

Approach:

• Import the required module.
• Set frequency and duration.
• Record voice data in NumPy array, you can use rec().
• Store into the file using soundfile.write().

Implementation:

Step 1: Import modules

import sounddevice as sd
import soundfile as sf

Step 2: Set frequency and duration and record voice data in NumPy array, you can use rec()

fs = 48000
duration = 5 
myrecording = sd.rec(int(duration * fs), samplerate=fs,
                     channels=2)

Note: fs is the sample rate of the recording (usually 44100 or 44800 Hz)

Step 3: Now store these array into audio files.

# Save as FLAC file at correct sampling rate
sf.write('My_Audio_file.flac', myrecording, fs)

Let’s create a GUI application for the same. We’ll be using Tkinter for doing the same.

Python3

import sounddevice as sd
import soundfile as sf
from tkinter import *


def Voice_rec():
    fs = 48000

    # seconds
    duration = 5
    myrecording = sd.rec(int(duration * fs),
                         samplerate=fs, channels=2)
    sd.wait()

    # Save as FLAC file at correct sampling rate
    return sf.write('my_Audio_file.flac', myrecording, fs)


master = Tk()

Label(master, text=" Voice Recoder : "
     ).grid(row=0, sticky=W, rowspan=5)


b = Button(master, text="Start", command=Voice_rec)
b.grid(row=0, column=2, columnspan=2, rowspan=2,
       padx=5, pady=5)

mainloop()

Output: