FIELD: acoustics.
SUBSTANCE: method of increasing sensitivity of omnidirectional microphones involves reception of sound waves using a movable electrode of a microphone. Fixed electrode is made with property of transmitting sound waves from movable electrode with transmission coefficient of not less than 0.7, behind fixed electrode there is a sound absorbing base, and said base is fixed on a wavy surface of rigid plate with through holes. Intensity of sound wave reflected from rigid plate, reaching movable electrode of microphone, is not more than 0.15 from operating input intensity. Movable electrode of microphone is made in form of a membrane with a conducting layer, and microphone also comprises a contact metal ring, an insulating ring, a protective screen, a contact metal insert and an insulating insert. Conductive coating on a fixed electrode is made in form of a microchannel plate.
EFFECT: high sensitivity.
1 cl, 3 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF CREATING A MICROPHONE BASED ON SELECTIVE ABSORPTION OF INFRARED RADIATION BY CARBON DIOXIDE IN ATMOSPHERIC AIR | 2016 |
|
RU2649056C2 |
| DIRECTIONAL RECEPTION OF SOUND SIGNALS IN SOLID ANGLE | 2016 |
|
RU2623654C1 |
| DEVICE FOR ACHIEVING SUPERSONIC SPEEDS | 2017 |
|
RU2666746C1 |
| METHOD FOR AUDIOLOGIC REHABILITATION WITH USE OF ULTRASONIC RADIATION | 2013 |
|
RU2539365C1 |
| MICROPHONE DEVICE WITH SHARP DIRECTIONAL RECEIVING DIAGRAM | 2009 |
|
RU2411692C2 |
| METHOD FOR MANUFACTURING ARMOUR-PROTECTIVE MULTILAYER MATERIAL | 2015 |
|
RU2630768C2 |
| CATHODE-RAY LIGHT MODULATOR TARGET ASSEMBLY | 0 |
|
SU928464A1 |
| DEVICE FOR ACHIEVING SUPERSONIC SPEEDS OF LOW MASS SHELLS | 2017 |
|
RU2668633C1 |
| METHOD FOR CONVERTING X-RAYS TO ELECTRIC SIGNAL AND CATHODE-RAY TUBE WHICH IMPLEMENTS METHOD | 1996 |
|
RU2125320C1 |
| METHOD OF EXCITATION OF SELF-SUSTAINED EMISSION IN AMPLIFYING MICROCHANNEL PLATES | 0 |
|
SU1035680A1 |
