What will the trumpets sound like?

…Listen, I tell you a mystery: We will not all sleep, but we will all be changed— in an instant, in the twinkling of an eye, at the last trumpet. For the trumpet will sound, the dead will be raised imperishable, and we will be changed. For the perishable must be clothed with the imperishable, and the mortal with immortality.…

http://biblehub.com/1_corinthians/15-52.htm

https://www.huffingtonpost.com/georges-ugeux/the-trumpet-shall-sound-t_b_12896074.html