This video shows the function  of a larynx which has paralysis of both true vocal cords.  The patient was a very heavy smoker and developed lung cancer.  First, the patient's left cord became paralyzed and then his right.  As can be seen in the video, the cords quiver but do not consistently touch each other during phonation.  The patient has an adductor muscle paralysis (the true vocal cords are lateral and not touching in midline).  In this type of paralysis, the patient has a good airway but a very weak voice.  If the nerves (recurrent laryngeal nerves) to the vocal cords were completely transected, the patient would have primarily an Abductor Muscle paralysis with the cords touching each other in the midline.  In this case, the patient's voice would be strong but he would have severe airway obstruction. 
  

Bilateral True Vocal Cord
Paralysis

The patient was unable to
vocalize and a speech
recording was not taken.