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Create 4pol #5666

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import numpy as np
import matplotlib.pyplot as plt
from matplotlib.backends.backend_pdf import PdfPages

# --- Configurações principais ---
frequencia = np.logspace(np.log10(20), np.log10(20000), 1000)
# Simulação genérica de resposta da caixa (realista e suave)
# Pico na sintonia e queda natural nas extremidades
resposta = 92 + 3 * np.exp(-0.5 * ((np.log10(frequencia) - np.log10(68)) / 0.1)**2) - 0.002*(frequencia/100)

# --- Geração do PDF ---
with PdfPages("Resposta_Caixa_4pol_68Hz.pdf") as pdf:
plt.figure(figsize=(11.7, 8.3)) # A4 horizontal em polegadas
plt.semilogx(frequencia, resposta, color='black', linewidth=2)

# Marca da sintonia
plt.axvline(68, color='gray', linestyle='--', linewidth=1)

# Legenda discreta
plt.text(100, 102, "Resposta da Caixa Completa – Sintonia 68 Hz", fontsize=10, color='gray')

# Curva limpa (sem grid e eixos)
plt.axis('off')

pdf.savefig(bbox_inches='tight')
plt.close()

print("✅ PDF gerado com sucesso: Resposta_Caixa_4pol_68Hz.pdf")