Ujjayi Breathing
Begin in your natural relaxed state, eyes closed and shoulders released.
As you start your three-part breathing, begin to tighten your throat.
This will create an ocean like sound as you breath. AKA: Darth Vader Breath
(Sometimes it is easier to create this sound by breathing through your mouth. Feel free to experiment in order to achieve the proper throat intonation with mouth breathing before you attempt the Ujjayi breath through the nose.)
Ensure that the lengths of the inhalation and exhalation are the same.