code: def generate_tone(note, octave, duration):
      sr = 48000
      a4_freq, tones_from_a4 = 440, 12 * (octave - 4) + (note - 9)
      frequency = a4_freq * 2 ** (tones_from_a4 / 12)
      duration = int(duration)
      audio = np.linspace(0, duration, duration * sr)
      audio = (20000 * np.sin(audio * (2 * np.pi * frequency))).astype(
          np.int16
      )
      return sr, audio
  
label_desc: Use image node_id 1 for calling a global function with example usage: generate_tone(note, octave, duration) and returns: sr,  audio