JP3051663U - Skin contact type closed indirect vibration conduction type audio dynamic microphone - Google Patents

Abstract

(57) [Summary] [Purpose] The closed microphone case makes it difficult for ambient noise, machine operation noise, and wind noise to enter the microphone voice, and can also be used as an underwater microphone. It is a skin-contact type indirect vibration-conducting audio microphone that is easy to transmit both loud and whispered voices with little distortion without being affected by microphone impedance difference by various built-in frequency correction amplification electronic circuits. [Structure] It is a structure that uses a closed microphone case to detect utterances from the skin and converts them into audio signals. In particular, a device that uses a conventional dynamic speaker microphone unit and adheres to the inside of a voice coil sealed microphone case to provide vibration and compensates and amplifies with a frequency compensation amplifier electronic circuit to output a conventional microphone sound pressure level output. This is a special sound and vibration microphone that can change various sound pressure level output according to the application by various electronic circuits.

Description

[Detailed description of the invention]

[0001]

[Industrial applications]

 This is a special microphone that can be used as an underwater microphone in a noisy or strong wind environment due to the closed microphone case. Microphones can be used in construction sites, in aerial helicopters and on motorcycles, and in noisy factories while operating machine tools and printing presses. This is a voice vibration microphone device that can use the same sound pressure level even if it is loud or loud by detecting skin vibration instead of a microphone for airborne sound waves.

[0002]

[Prior art]

 Dynamic microphones, condenser microphones, and electret condenser microphones are methods of collecting sound sources that travel through the air. This dynamic speaker microphone is a voice microphone that adheres the voice coil to the microphone case, closes it tightly, transmits voice skin vibrations, and then generates a voice output equivalent to that of a conventional microphone using a frequency amplification electronic circuit. In addition, the conventional microphone sound output for low and loud voices is a sound microphone that compensates for insufficient microphone characteristics over a wide range of upper and lower limits. . Although a matching transformer was required due to the high and low microphone impedance, this is a voice vibration microphone that can be used without this transformer.

[0003]

[Problems to be solved by the invention]

 Instead of collecting audio sources for aerial transmission, vibrations generated on the skin of the head and neck caused by vocalization are transmitted to a dynamic speaker microphone, and weak signals are amplified in various stages by frequency amplification electronic circuits to generate audio output. It is a voice vibration microphone. The skin-conducting voice microphone that can be used in noisy environments or underwater, and can be used even in a loud or loud voice by closing the microphone case, making it difficult for conventional airborne voice sources to enter.

[0004]

[Means for Solving the Problems, Functions, and Embodiments] The holder fixed to the neck is made of an elastic stainless steel sample. This is a closed-loop indirect vibration-conducting audio microphone that senses vibrations from the skin next to the neck as well as the jaw and the vocal cords.

[0005]

[Effect of the invention]

 By sealing the microphone case, it can be used as a microphone under noisy conditions, strong winds and underwater, and is a vibrating audio microphone with high quality protection and high durability. . This is a voice vibration microphone that can be used without a matching transformer regardless of the microphone impedance. The skin-vibration-type voice microphone can be used with little distortion of voice output, whether it is a whispering whisper or a loud screaming voice. Depending on the degree of amplification of the frequency amplification electronic circuit, it can be used for microphones of various telephones, mobile phones, PHS telephones, helicopters, radios including police digital telephone radios, etc. I made it a voice vibration microphone to tell.

[Brief description of the drawings]

FIG. 1 is a sectional view of a microphone mechanism.

[Figure 2] Microphone external use diagram

[Explanation of symbols]

A: Upper cover of main unit B: Lower cover of main unit C: Dynamic speaker microphone D: Adhesive between microphone case inner and dynamic voice coil E: Frequency amplification electronic circuit F: External microphone fixing member as required G: 2-wire plus, Negative wire H: Atmospheric isolation sealing adhesive I: Internal dynamic speaker microphone fixing and vibration damping material J: Double-sided tape or adhesive fixing C, E, I and B

[Procedure amendment]

[Submission date] August 19, 1996

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Name of device

[Correction method] Change

[Correction contents]

[Name of the invention] Direct vibration conduction type audio dynamic microphone in a contact-type closed case

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] Claim 1

[Correction method] Change

[Correction contents]

(1) The vocal cords are shaken by vocalization and vibration is generated throughout the head, so that the temple, the cheekbone, the jawbone,
Contact the outside of the microphone to the neck, overhead and behind the ear. (B) The thickness of the contact microphone surface case is reduced, and the microphone case is hermetically sealed to prevent water and noise transmitted from the surrounding air from entering the microphone while having water and dust resistance and quality protection functions. C. Adhesively fix the voice coil of the dynamic speaker microphone directly inside the contact microphone surface. (D) A weak sound signal generated in a dynamic speaker microphone is corrected by an electronic amplifier circuit to sufficiently obtain a microphone sound pressure level. At the same time, it incorporates electronic circuits for low-frequency and high-frequency amplification, condenser microphone conversion, and impedance conversion, and outputs it to the outside of the microphone case using plus and minus wires. E Inside the microphone, secure and isolate the dynamic speaker microphone and electronic circuit with a vibration damping agent, double-sided tape, insulating material and adhesive. A direct sound conduction type voice dynamic microphone in a contact-type closed case having the above configuration. ────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] May 7, 1997

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] Claim 1

[Correction method] Change

[Correction contents]

(1) The vocal cords are shaken by vocalization and vibration is generated throughout the head, so that the temple, the cheekbone, the jawbone,
The inner surface of the microphone is brought into contact with the neck, overhead, and behind the ear. (B) The thickness of the contact microphone surface case is reduced, the microphone case is hermetically sealed, and the sound and noise of surrounding air transmission while having water and dust resistance and quality protection functions. The voice coil of the dynamic speaker microphone is directly adhered and fixed to the inside of the contact microphone surface, and the weak audio signal generated in the dynamic speaker microphone is corrected by the electronic amplification circuit and sufficient microphone sound pressure is applied. At the same time as gaining the level, it incorporates electronic circuits for low-frequency high-frequency amplification, condenser microphone conversion, and impedance conversion, and outputs it to the outside of the microphone case with plus and minus wires to create a microphone sound. Microphones and electronic circuits are fixed with vibration damping material, double-sided tape, insulating material, adhesive, and isolated and sealed. Skin contact closed indirect vibration transmitting speech dynamic microphone for. ────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] March 18, 1998

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claims for utility model registration

[Correction method] Change

[Correction contents]

[Utility model registration claims]

Claims (2)

[Utility model registration claims] [1] This is a device that is different from conventional airborne voice microphones while sealing the microphone case and having water and dust proof functions. Because the vocal cords shake or the whole head vibrates due to the voice of the voice, the "temple" or "cheekbone" on a thin skin
This is a skin-contact type indirect vibration-conduction dynamic microphone that converts a microphone into contact with the top of the jawbone or the neck with a vocal cord to convert it into a voice signal. Unlike conventional condenser microphones and dynamic microphones that pick up sound waves in the air, the voice coil of a dynamic speaker microphone is glued to the microphone side of the case to convert it to voice, and the vibration generated on the skin with the vocal cords is sensed and converted to the voice coil. It is a structure that conducts and converts it to voice. Since the frequency transmitted to the voice coil is very weak, it is a system that converts it into a voice signal by using various frequency amplification electronic circuits according to the device application. [2] This is a device that makes the microphone case surface that comes into contact with the skin extremely thin to easily transmit skin vibrations by voice.
Furthermore, since the vibration transmitted to the dynamic speaker is weak, the signal is corrected and amplified by the amplification electronic circuit. Correction amplification is performed according to the LF. A. , RF. A. , C-
MIC IMP-C, ECM IMP-C, etc. are applied. Various microphones differed in impedance from 2 ohms to 3 ohms than 5 ohms, so the sound pressure level was low and there was no compatibility. It was a voice microphone.