Musar zu Tehillim 65:14

The word shofar hints at the admonition, “Improve [shapru] your deeds and abandon your evil ways!” The tekiyah [a long unbroken blast] is a form of prayer and the one who hears it should say, “Master of the Worlds! Insert [teka] Your name Y-ah [the last two letters of the word tekiyah] among Israel like a peg that is firmly imbedded [takua], as it is written, ‘His hand was upon the throne of Y-ah’ (Shemos 17:16). The shevarim [a blast broken into long segments] is a hint that the Holy One Blessed is He will shatter [yeshabeir], cast down and eradicate the throne of the Sitrah Acharah so that it no longer has any dominion over Israel.This is followed by a teruah [a blast broken into many short segments], indicating that at that time, “they will make a joyful sound [yisro’a’u] and sing together” (Tehillim 65:14). For the letters vav and heh of the word teruah (תרועה) represent the vav and heh [of Hashem’s name], which will join together [with the first two letters, i.e. the yud and heh alluded to above], in fear and love in the name of all Israel.