Untitled

def calc_dB(files, start=10, stop=-1):
    power = []
    duration = []
    error = 0

    for file in files:
        audio = AudioSegment.from_file(file)
        y = audio.get_array_of_samples()
        sr = int(len(y)/audio.duration_seconds)
        if stop == -1: timediff = audio.duration_seconds -1 - start 
        else: timediff = stop - start 
        duration.append(timediff)
        integrated_power = np.sum((np.array(y[sr*start:sr*stop]).astype(np.int32))**2/65535)
        power.append(10*np.log10( integrated_power /  timediff ))
        
        # ---------------------------------------------------------------
        # Added this 
        s_p_j2 = np.sum(( 0.05 * 2 * (np.array(y[sr*start:sr*stop]).astype(np.int32))**2 /65535 )**2)
        s_p_j2dB = 10/integrated_power*s_p_j2
        error += s_p_j2dB
        # ---------------------------------------------------------------

        print('Error: ', s_p_j2dB)

    return [np.array(power), error]