in the courtroom covering this case from the start, he joins us live on the phone. reporter: oscar pistorius was distance to be a ringside spectator for the verbal brawling in court. they use a sound expert to suggest neighbors who claim they heard a woman screaming on the night she was shot were mistaken, it was oscar pistorius himself screaming. of steps the lawyers cutting through all the talk of decibel levels which the expert has been giving and instead got to agree people generally can interpret sounds correctly. >> right in saying it is common sense that more often than not can do in the fight a woman and a male voice screaming but we cannot say it is absolutely certain. >> that is correct. reporter: he found a fit only carried out the test a week ago and got into greases the shooting occurred a year ago houses have been built between