espnet.asr.asr_utils.plot_spectrogram

source

espnet.asr.asr_utils.plot_spectrogram(plt, spec, mode='db', fs=None, frame_shift=None, bottom=True, left=True, right=True, top=False, labelbottom=True, labelleft=True, labelright=True, labeltop=False, cmap='inferno')

Plot spectrogram using matplotlib.

• Parameters:
  • plt (matplotlib.pyplot) – pyplot object.
  • spec (numpy.ndarray) – Input stft (Freq, Time)
  • mode (str) – db or linear.
  • fs (int) – Sample frequency. To convert y-axis to kHz unit.
  • frame_shift (int) – The frame shift of stft. To convert x-axis to second unit.
  • bottom (bool) – Whether to draw the respective ticks.
  • left (bool)
  • right (bool)
  • top (bool)
  • labelbottom (bool) – Whether to draw the respective tick labels.
  • labelleft (bool)
  • labelright (bool)
  • labeltop (bool)
  • cmap (str) – Colormap defined in matplotlib.