The idea of this Possuk according to Chassidus is to link the חצוצרות to the שופר we blow even now. This means that in addition to the ביטול of שופר there is the מציאות of the איד as he is חצי צורה with Hashem.
Version Two from Beis Midrash Linashim. וביום שמחתכם ה’תש”מ.
Class One. Malchiyos Zichronos and Shofros exist on the level of speech and action.
Class Two. Along with the Shofar there is Chatzotzros. This means Giluyim along with Atzmus.
