Anh
aural transmitter
audio transmitter
Đức
Tonsender
Schallsender
Pháp
émetteur de son
Tonsender /IT-TECH/
[DE] Tonsender
[EN] aural transmitter
[FR] émetteur de son
Schallsender,Tonsender /SCIENCE,ENG-ELECTRICAL/
[DE] Schallsender; Tonsender
[EN] audio transmitter