Section 834 - When presence of defendant not necessaryThe defendant has a right to be present, but his presence is not essential to the validity of any of the following proceedings in a criminal prosecution:
(1) The making, hearing of, or ruling on a preliminary motion or application addressed to the court;(2) The making, hearing of, or ruling on a motion or application addressed to the court during the trial when the jury is not present; except as provided in Clause (4) of Article 831; and(3) The making, hearing of, or ruling on a motion or application made after his conviction.