Full-band microphone with sound beam and sound tunnel

Abstract

The invention discloses a full-band microphone with a sound beam and a sound tunnel. The full-band microphone comprises a vibrating diaphragm, a coil, a diaphragm bracket, a gasket, an iron pad and a magnet; the outer edge of the vibrating diaphragm is combined with the upper surface of the diaphragm bracket, and the inner edge is combined with the upper end of the coil; the diaphragm bracket and the gasket are annular and are concentric to form a combined body with a central hole; the coil is embedded in the center hole, the iron pad is embedded in the coil, and the magnet is positioned below the iron pad; a bridge type sound beam is erected on the surface of at least one side of the vibrating diaphragm, and the bridge type sound beam is annular and is located on the outer side of the upper end of the coil; the surface of the vibrating diaphragm is provided with at least two grooves, and the grooves are arranged in a radial manner, and equally divide the surface of the vibrating diaphragm at the outer side of the bridge type sound beam into a plurality of resonance areas. Each groove transversely penetrates through the bridge type sound beam and is perpendicular to the bridge type sound beam in the length direction of the groove. The groove is concavely arranged on the surface of the diaphragm to form a sound tunnel. The problem that the microphone cannot effectively resonate full-band sound details is solved, the microphone can effectively resonate in the full band, and the high-fidelity sound receiving effect is achieved.

Description

technical field [0001] The invention relates to a microphone, in particular to a full-frequency microphone with a sound beam and a sound tunnel. Background technique [0002] Microphone, scientific name microphone, translated from English microphone (microphone), also known as microphone, microphone. Microphones are energy conversion devices that convert sound signals into electrical signals. There are moving coil, condenser, electret and recently emerging silicon micro microphones, as well as liquid microphones and laser microphones. Most microphones are dynamic microphones (Dynamic Microphone). The basic structure includes three parts: a coil, a diaphragm, and a permanent magnet. When sound waves enter the microphone, the diaphragm vibrates under the pressure of the sound waves, and the coil connected to the diaphragm begins to move in the magnetic field. According to Faraday's law and Lenz's law, the coil will generate an induced current. [0003] Common problems with ...

AI Technical Summary

Problems solved by technology

[0004] When the diaphragm of the microphone receives the sound waves from the external sound source, because it has an inherent resonant frequency, if it exceeds a certain range of the resonant frequency area, there is a problem that the high-pitched and low-pitched areas cannot effectively resonate, resulting in the received sound After "sound-to-electricity" conversion, and then "electricity-to-sound" restoration, the sound quality has the problem that the high-pitched area is not bright, and the low-pitched area is not thick and round enough, which leads to poor sound fidelity

The main reason is that the current diaphragm cannot meet the good broadband vibration from the high-pitched range to the low-pitched range, that is, it cannot adapt to the resonance and vibration of the wide-ranging frequency changes in the high-pitched, mid-range, and low-pitched ranges at the same time, so when receiving sound Unable to collect all the sound details of the full frequency band

In summary, the structural design of the traditional microphone is unreasonable, which is not conducive to the good sound wave vibration of the diaphragm from the high-pitched range to the low-pitched range.

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