code: def gen_np_sinusoid(frequency, amp, sample_rate, audio_len_sec):
      x = np.linspace(
          0, audio_len_sec, int(audio_len_sec * sample_rate)
      )
      audio_sin = amp * (np.sin(2 * np.pi * frequency * x))
      return audio_sin
  
label_desc: Use image node_id 1 for calling a global function with example usage: gen_np_sinusoid(frequency, amp, sample_rate, audio_len_sec) and returns: audio_sin