We don't have synonyms for vocalising yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are vocalizing, localising and focalising.
(n) :
(anatomy) A triangular band of muscle that is the medial part of the thyroarytenoid muscle, originates in the lamina of the thyroid cartilage, and inserts into the vocal process of the arytenoid cartilage; it lies parallel with the vocal ligament to which it is adherent and modulates the tension of the true vocal cords.
(n) :
(anatomy) A triangular band of muscle that is the medial part of the thyroarytenoid muscle, originates in the lamina of the thyroid cartilage, and inserts into the vocal process of the arytenoid cartilage; it lies parallel with the vocal ligament to which it is adherent and modulates the tension of the true vocal cords.