en base al siguiente texto generame oraciones en passive voice en ingles: Voice production occurs by the integration of the respiratory, phonatory and articulatory systems,1,2 also involving highly complex mechanisms related to the central and peripheral nervous systems, such as auditory monitoring.3 It can be described through auditory-perceptual, acoustic, aerodynamic evaluations and laryngeal imaging.3 The auditory perceptual evaluation is considered the gold standard in voice assessment and enables characterization and quantification of perceptual vocal features