The Shofar Horn must be from a kosher animal , it can not be a cow horn because of the golden calf incident in Exodus 32 . The two most often used are the short Ram's horn, and the much longer Kudu horn ( from an African Antelope ).
In ancient times ( and in the future ) the horn shall be used to sound a sharp attention that friends or foes alike will be called or warned.
There are actually Four sound Variations heard on the video and they are described in this way :
FIRST , the 'Tekiah' - one single plain and straight blast, initial smooth and unbroken note, meant to resonate with both Joy and Happiness .
SECOND , the 'Shevarim' - this comes by Three short blasts that are distinct and broken notes to symbolize a call to Repentence and express Grief .
THIRD , the 'Teruah' - Rapid successive blasts go in a group of Nine staccato notes . These refer to an apprehensive state, sometimes of deep crying. The beginning 3 of these 9 notes come from the actual Hebrew meaning 'to thrust through'.
FOURTH , the 'Tekiah Gedolah' - defined as the Great Tekiah, similar to the First blast; yet Much Longer in duration, indicating Redemption Hope. Also declared the Literal Final or LAST TRUMP !