A loudspeaker that produces sound by compressing air or gas is known as a pneuphonic horn. Through a diaphragm that vibrates in response to the compressed air or gas, it works by translating electrical signals into sound waves. Public address systems, musical instruments, and industrial signalling devices all frequently make use of pneuphonic horns. They are ideal for outdoor or large-scale venues where sound amplification is necessary because of their reputation for producing loud and strong sound. Pneuphonic horns are different from conventional speakers in that they have a distinctive and recognisable sound.