JP3041176U - 2-way microphone with additional use of piezoelectric ceramic element and cartridge unit to increase high range and sound pressure of indirect vibration conduction type electret condenser microphone and dynamics microphone unit in skin contact type closed case - Google Patents

Abstract

(57) [Abstract] [Purpose] A closed microphone case allows ambient noise, mechanical operating noise, and wind noise to be mixed into the microphone sound, and can be used as an underwater microphone as well. The built-in electret condenser microphone and dynamics microphone By adding a piezoelectric ceramics element or cartridge as a microphone unit together with the unit, the voice that tends to be low tone is supplemented to the high frequency range, the sound pressure is further lowered, and the characteristics of the skin contact closed case vibration conduction type voice microphone are improved. It was made up of a two-way microphone system product. . [Structure] With a structure that detects vibrations of vocal cords in a sealed microphone case and converts them into audio signals, using only conventional electret condenser microphones and dynamics microphone units to compensate for characteristics that tend to cause high sound and insufficient sound pressure. By adding a piezoelectric ceramic element and a cartridge and using two different types of microphone units, we have created a product with a 2-way microphone system configuration that obtains a high sound range and high sound pressure.

Description

[Detailed description of the invention]

[0001]

[Industrial applications]

 Microphones can be used in noisy and windy environments, underwater microphones, construction sites, aerial helicopters, motorcycles, and machine tools and printing machines that are operating in noisy factories. It is a voice vibration microphone device that has the same sound pressure level as normal and can be used even in a loud voice. Only 50% and 30-20% of vocal cords have vocal cords remaining and the sound pressure is low and it is difficult to vocalize, so it is not a beautiful voice, but it is not necessary to vocalize in an unreasonable loud voice.

[0002]

[Prior art]

 If you use only an electret condenser microphone or a dynamics microphone in a closed microphone case, the high range will not be extended and the sound pressure will be further lowered, making the microphone sound difficult to hear, but by adding a piezoelectric ceramic element and a cartridge, 2-way mi A system that complements the high range and high sound pressure with two types of microphone units in the Krohon system.

[0003]

[Problems to be solved by the device]

 Use a closed microphone case to use the microphone under noisy conditions, dusty places, or underwater. Vibration-type microphones tend to have low microphone sound, tend to be muffled, do not extend high frequencies, and have low sound pressure. In order to supplement the high range and obtain high sound pressure, we solved it with a 2-way microphone system that uses a piezoelectric ceramic element or a cartridge unit additionally in the electret condenser microphone or dynamics microphone unit.

[0004]

Means, Action and Embodiment for Solving the Problems

 The holder to be fixed to the neck is made of elastic stainless steel, only the microphone body is attached to the inside of the hairband, it is attached to the temple of the glasses and it is detected from the "temple", and it is embedded in the headphone and the throat vocal cord vibration is detected from the "jaw" In addition, a closed indirect vibration conduction type two-way built-in microphone system that senses from the skin “side of the neck” is adopted.

[0005]

[Effect of the invention]

 Obtained in a sealed microphone case to improve quality protection and durability, noise is less likely to enter the microphone sound, and the 2-way microphone system provides high range and high sound pressure, making the microphone sound easy to hear even in the noise. In a car or in a quiet place, the voice is transmitted to the other party with a sufficient sound pressure, does not disturb the surroundings loudly, both hands can be used even when working hands-free, and it is a hidden concealment in clothes even when a police officer is following. It is a microphone system that can be used for PHS mobile phones, radios, police radios, etc. without any noise and noise.

[Brief description of the drawings]

[Figure 1] Microphone mechanism cross section

[Figure 2] External view of microphone

[Explanation of symbols]

 A: Main body top lid B: Main body bottom lid C: Piezoelectric ceramics cartridge unit D: Lead wire E: Electret condenser microphone unit F: Hard rubber microphone unit cradle G: Microphone output cord H: Vented porous sponge I: Top lid and bottom lid connection Part J: Main body upper cover K: Main body lower cover L: Dynamics microphone unit M: Hard rubber microphone unit cradle N: Microphone output code O: Piezoelectric ceramic element unit P: Lead wire Q: Upper cover and lower cover joint

 ─────────────────────────────────────────────────── ─── Continuation of front page (54) [Title of device] Piezoelectric ceramic element or cartridge unit that raises the high range and sound pressure of indirect vibration conduction type electret condenser microphone and dynamics microphone unit in skin contact type closed case. 2-way microphone for additional use

Claims (1)

[Utility model registration claims] 1. A closed microphone case prevents ambient noise, mechanical operating noise and wind noise from entering the microphone sound, and has a dustproof function so that it can be used as an underwater microphone. By adding a piezoelectric ceramics element and a cartridge and using two different types of microphone units, the voice that tends to be low-pitched can be supplemented to the high-pitched tone, and the low sound pressure becomes higher, resulting in a 2-way speaker system. A two-way microphone that uses two types of microphone units, a skin contact type closed case and a vibration conduction type, which have various characteristics in the microphone.