'Sound' in the Bible

whenever, therefore, thou mayest do kindness, thou mayest not sound a trumpet before thee as the hypocrites do, in the synagogues, and in the streets, that they may have glory from men; verily I say to you -- they have their reward!

and he shall send his messengers with a great sound of a trumpet, and they shall gather together his chosen from the four winds, from the ends of the heavens unto the ends thereof.