code: public void calculate_pcm_samples(Obuffer buffer)
  	{
  		compute_new_v();
  		compute_pcm_samples(buffer);
  
  		actual_write_pos = (actual_write_pos + 1) & 0xf;
  		actual_v = (actual_v == v1) ? v2 : v1;
  
  		// initialize samples[]:
  		// for (register float *floatp = samples + 32; floatp > samples; )
  		// *--floatp = 0.0f;
  
  		// MDM: this may not be necessary. The Layer III decoder always
  		// outputs 32 subband samples, but I haven't checked layer I & II.
  		for (int p = 0; p < 32; p++)
  			samples[p] = 0.0f;
  	}
docs: Calculate 32 PCM samples and put the into the Obuffer-object.