'Trumpet' in the Bible

It happened, when he had come, that he blew a trumpet in the hill country of Ephraim; and the children of Israel went down with him from the hill country, and he before them.

But the Spirit of Yahweh came on Gideon; and he blew a trumpet; and Abiezer was gathered together after him.

When I blow the trumpet, I and all who are with me, then blow the trumpets also on every side of all the camp, and shout, 'For Yahweh and for Gideon!'"