You need to determine the complexity.
Electrodes must be placed on healthy skin and never over the heart, neck, or temples. estim audio files
import numpy as np, soundfile as sf sr = 48000 t = np.linspace(0, 1, sr, endpoint=False) wave = 0.5 * np.sign(np.sin(2*np.pi*20*t)) # 20 Hz square wave at half amplitude sf.write('estim_20hz_square.wav', wave, sr, subtype='PCM_16') You need to determine the complexity