Horn and megaphone

Abstract

The invention discloses a horn and a megaphone, and relates to the technical field of sound amplification equipment, and the megaphone comprises a horn, a megaphone body, a microphone and a loudspeaker. The horn is of a direct injection type integrated structure. The horn comprises a connecting section and a sound outlet section, and a mounting section is arranged in the connecting section, so that the loudspeaker is convenient to mount; the connecting section of the horn is connected with one end of the megaphone body, and the sound outlet section of the horn is used as the sound outlet end of the megaphone; and the other end of the megaphone body is connected with the microphone. The horn and the megaphone have the advantages of being small in size and convenient to use, long-distance transmission of sound can be achieved, sound transmission has directivity, and the transmission effect is good.

Description

technical field [0001] The invention relates to the technical field of sound amplification equipment, in particular to a horn and a loudspeaker. Background technique [0002] The megaphone is widely used in all aspects of life due to its simple structure, lightness in holding and convenient use. Because of its sound amplification effect, the megaphone can realize the long-distance transmission of sound, so that people in the distance can more clearly know the content of the sound amplification. When the horn megaphone is working, the electrical signal sent by the microphone generates a magnetic field when it passes through the voice coil. This magnetic field interacts with the magnetic field generated by the magnet of the megaphone. This interaction force makes the voice coil follow the audio frequency in the megaphone magnetic field. The strength of the current vibrates, when the voice coil and the diaphragm vibrate together, the surrounding air is pushed to vibrate to pro...

AI Technical Summary

Problems solved by technology

[0003] At present, most of the hand-held megaphones on the market use reflective horns. The sound from the speaker is reflected many times in the reflective horn, which is prone to standing wave distortion. In order to increase the sound pressure level and make the sound transmitted by the megaphone clearer, it is necessary to Increase the bottom area of ​​the horn, thereby expanding the volume of the megaphone equipment, which is not conducive to the miniaturization of the equipment; for a high-sensitivity long-distance megaphone, in order to avoid howling, it is necessary to keep a certain distance between the microphone and the horn radiation port, so The tail of the megaphone needs to be lengthened, so that the volume of the megaphone is larger, which is not conducive to carrying and inconvenient to use

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