Trumpet playing can be loud, and a popular joke is:
 
Q: What’s the difference between a jet airplane and a trumpet?
A: About three decibels.
 
The joke has been cited in print since at least 2000.
 
     
Google Groups: alt.music.makers.soloact
My friends set these along
Beej&John
10/2/00
(...)
Q: What’s the difference between a jet airplane and a trumpet?
A: About three decibels.
 
Google Groups: rec.music.makers.guitar.jazz
more musician jokes
Kevin Van Sant
1/15/01
(...)
Q: What’s the difference between a jet airplane and a trumpet?
A: About three decibels.
   
Google Groups: rec.arts.marching.drumcorps
OT: Music Humor
DDay
3/15/01
(...)
Q: What’s the difference between a jet airplane and a trumpet?
A: About three decibels.
 
Twitter
LaurenJeanie Simpson
‏@LaurenJeanieS
What’s the difference between a jet airplane and a trumpet?
About three decibels.    Me: nah its less than that :D even with a st mute
5:31 PM - 1 Jan 2010
   
Twitter
MusicianHumor
‏@JokesBoutMusic
Q: What’s the difference between a jet airplane and a trumpet?
A: About three decibels.
3:38 AM - 18 Jan 2015