text: import io
  
  import matplotlib.pyplot as plt
  
  
  def plot_spectrogram_to_buf(spectrogram_tensor, name=None):
      plt.figure(figsize=(20, 5))
      plt.imshow(spectrogram_tensor)
      plt.title(name)
      buf = io.BytesIO()
      plt.savefig(buf, format='png')
      plt.close()
      buf.seek(0)
      return buf
  