'Sound' in the Bible

yet the things without life giving sound -- whether pipe or harp -- if a difference in the sounds they may not give, how shall be known that which is piped or that which is harped?

for if also an uncertain sound a trumpet may give, who shall prepare himself for battle?

in a moment, in the twinkling of an eye, in the last trumpet, for it shall sound, and the dead shall be raised incorruptible, and we -- we shall be changed: