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 thesounddevice module. This recorded file can be saved using thesoundfile 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 sdimport soundfile as sf

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

fs = 48000duration = 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 ratesf.write('My_Audio_file.flac', myrecording, fs)

Let's create a GUI application for the same. We'll be usingTkinter for doing the same.

importsounddeviceassdimportsoundfileassffromtkinterimport*defVoice_rec():fs=48000# secondsduration=5myrecording=sd.rec(int(duration*fs),samplerate=fs,channels=2)sd.wait()# Save as FLAC file at correct sampling ratereturnsf.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:

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