plot_wav.py

import numpy as np
import matplotlib.pyplot as plt
from scipy.io.wavfile import read
import sys
import os

mic_path = "wav_folder/signal_0.wav"

if len(sys.argv) > 1:
    file_path = sys.argv[1]
else:
    print("Usage: python test.py <file_path>")
    sys.exit(1)

if not file_path.lower().endswith('.wav'):
    print("Error: The file must be a .wav file.")
    sys.exit(1)

if not os.path.exists(file_path):
    print(f"Error: The file '{file_path}' does not exist.")
    sys.exit(1)

sample_rate, data = read(file_path)

if data.ndim > 1:
    data = data.mean(axis=1) 

time = np.linspace(0, len(data) / sample_rate, num=len(data))
plt.figure(figsize=(10, 6))
plt.plot(time, data)
plt.title(f"Audio Signal of '{file_path}'")
plt.xlabel("Time (seconds)")
plt.ylabel("Amplitude")
plt.grid()
plt.show()