What is the duty of a judge to control all proceedings during a trial?

To this end, 'the court has a duty to see that justice is done and to bring out facts relevant to the jury's determination.' [Citation.] The trial court has a statutory duty to control trial proceedings, including the introduction and exclusion of evidence. [Citation.] As provided by section 1044, it is 'the duty of the judge to control all proceedings during the trial, and to limit the introduction of evidence and the argument of counsel to relevant and material matters, with a view to the expeditious and effective ascertainment of the truth regarding the matters involved.'" (People v. Sturm, supra, 37 Cal.4th at p. 1237.)