code: def bisine_wave(frequency):
      """Emit two sine waves, in stereo at different octaves."""
      # Generate 2 sine waves, each of which is a [1, _samples(), 1] shaped tensor.
      sine_hi = sine_wave(frequency)
      sine_lo = sine_wave(frequency / 2.0)
  
      # Concatenating along axis 2 produces a [1, _samples(), 2] shaped tensor, a
      # stereo (2 channel) audio waveform.
      sample1 = tf.concat([sine_lo, sine_hi], axis=2)
      sample2 = tf.concat([sine_hi, sine_lo], axis=2)
  
      # Return [2, _samples(), 2], representing 2 audio clips.
      return tf.concat([sample1, sample2], axis=0)
  
file_path: tensorboard/tensorboard/plugins/audio/audio_demo.py
imports: import inspect
  import math
  import os.path
  from absl import app
  from absl import flags
  import tensorflow
label_desc: Use image node_id 5 for calling a global function with example usage: bisine_wave(frequency) and returns: tf