Question

what is speaking tube ? what is its use

Answer 1

A loudspeaker (or loud-speaker orspeaker) is an electroacoustic transducer; which converts an electrical audio signal into a corresponding sound. The most widelyused type of speaker in the 2010s is the dynamic speaker, invented in 1925 by Edward W. Kellogg and Chester W. Rice.

hope it clarifies ur doubt dear friend..

Answer 2

Hey mate here is your answer
It is a pipe to convey the person's voice from on room or building to another one
It causes are it allow your doctor to look upon your vocal chords when you speak
Hope it helps....