code: def build_sinusoid(length, freqs, samplerate):
      return np.sin(
          2.0 * np.pi * np.arange(length) * freqs / samplerate
      ).astype(aubio.float_type)
  
imports: import numpy
  import aubio
label_desc: Use image node_id 1 for calling a global function with example usage: build_sinusoid(length, freqs, samplerate) and returns: np