CN103743466A - Microphone for measuring sound pressure value - Google Patents

Microphone for measuring sound pressure value Download PDF

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Publication number
CN103743466A
CN103743466A CN201310716473.7A CN201310716473A CN103743466A CN 103743466 A CN103743466 A CN 103743466A CN 201310716473 A CN201310716473 A CN 201310716473A CN 103743466 A CN103743466 A CN 103743466A
Authority
CN
China
Prior art keywords
microphone
sound
sound pressure
measuring
receiver
Prior art date
Application number
CN201310716473.7A
Other languages
Chinese (zh)
Inventor
向宇
田涛
Original Assignee
广西科技大学
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 广西科技大学 filed Critical 广西科技大学
Priority to CN201310716473.7A priority Critical patent/CN103743466A/en
Publication of CN103743466A publication Critical patent/CN103743466A/en

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Abstract

The invention discloses a microphone for measuring a sound pressure value. The microphone is characterized in that the microphone comprises a sound receiver that is capable of converting the sound energy into the mechanical energy and an electromechanical tranducer that is capable of converting the mechanical energy into the electric energy. According to the invention, the provided microphone has the high sensitivity, the wide response straightness frequency range, and the stable output performance; and the microphone works stably in the temperature range from -50 DEG C to 150 DEG C and under the relative humidity range from 0 to 100%. Therefore, the microphone is suitable for precise sound-level measurement in the engineering experiment and not only is capable of measuring the sound pressure and the frequency but also can be used for testing the sound intensity and the acoustical power.

Description

A kind of for measuring the microphone of sound pressure level

Technical field

The present invention relates to a kind of for measuring the microphone of sound pressure level.

Background technology

The equipment and instrument of using in automobile noise test process has microphone, sound meter, spectrum analyzer and sound intensity analytical instrument etc., and in engineering reality, sound meter and spectrum analyzer are used for distinguishing the frequency characteristic that forms noise [42,43]; Sound intensity analyzer device not only can testing automobile sound pressure level, sound intensity level, can make equally the sound intensity three-dimensional spectrum of relevant data.For different noise testing targets, the instrument of therefore selecting is corresponding difference also.Acoustic pressure, frequency, acoustical power and Particle Vibration Velocity are the key properties of sound.Therefore main consideration acoustic pressure and these two indexs of frequency in automobile vibration and noise testing application are also main measurement target.In engineering reality, to test out accurately the acoustic pressure of sound source radiation, so will have very accurate microphone and amplifier record analysis equipment etc., also will have satisfactory certain acoustic test environment.

Summary of the invention

The defect that the present invention seeks to exist for prior art provides a kind of for measuring the microphone of sound pressure level.

The present invention for achieving the above object, adopts following technical scheme: a kind of for measuring the microphone of sound pressure level, comprise that a part is for converting acoustic energy to the sound receiver of mechanical energy; Another portion is the electromechanical transducer that mechanical energy can be converted to electric energy.

Further, described sound receiver consists of feeble signal receiver and playback circuit, described feeble signal receiver is connected with filtering circuit, feeble signal receiver extracts faint voice signal from external environment condition, filtering circuit carries out filtering processing to the voice signal receiving, and after further voice signal being amplified by described signal amplification circuit, by described playback circuit, carry out sound broadcasting.

Beneficial effect of the present invention: the sensitivity that microphone of the present invention will be very high, there is the straight frequency range of very wide response, and there is very stable output performance, conventionally in the temperature range of-50 to 150 degree and in 0 to 100% relative humidity, can keep stable, so it is suitable for the measurement of accurate sound level in engineering experiment, it can not only measure acoustic pressure and frequency is commonly used to test the sound intensity and acoustical power simultaneously.

Embodiment

The present invention relates to a kind ofly for measuring the microphone of sound pressure level, comprise that a part is for converting acoustic energy to the sound receiver of mechanical energy; Another portion is the electromechanical transducer that mechanical energy can be converted to electric energy.Wherein, described sound receiver consists of feeble signal receiver and playback circuit, described feeble signal receiver is connected with filtering circuit, feeble signal receiver extracts faint voice signal from external environment condition, filtering circuit carries out filtering processing to the voice signal receiving, and after further voice signal being amplified by described signal amplification circuit, by described playback circuit, carry out sound broadcasting.

The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.

Claims (2)

1. for measuring a microphone for sound pressure level, it is characterized in that, comprise that a part is for converting acoustic energy to the sound receiver of mechanical energy; Another portion is the electromechanical transducer that mechanical energy can be converted to electric energy.
2. as claimed in claim 1 a kind of for measuring the microphone of sound pressure level, it is characterized in that, described sound receiver consists of feeble signal receiver and playback circuit, described feeble signal receiver is connected with filtering circuit, feeble signal receiver extracts faint voice signal from external environment condition, filtering circuit carries out filtering processing to the voice signal receiving, and after further voice signal being amplified by described signal amplification circuit, by described playback circuit, carry out sound broadcasting.
CN201310716473.7A 2013-12-23 2013-12-23 Microphone for measuring sound pressure value CN103743466A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310716473.7A CN103743466A (en) 2013-12-23 2013-12-23 Microphone for measuring sound pressure value

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310716473.7A CN103743466A (en) 2013-12-23 2013-12-23 Microphone for measuring sound pressure value

Publications (1)

Publication Number Publication Date
CN103743466A true CN103743466A (en) 2014-04-23

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201310716473.7A CN103743466A (en) 2013-12-23 2013-12-23 Microphone for measuring sound pressure value

Country Status (1)

Country Link
CN (1) CN103743466A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201123123Y (en) * 2007-12-04 2008-09-24 富祐鸿科技股份有限公司 Audio playback device for eliminating exterior noise
CN201366912Y (en) * 2009-03-13 2009-12-23 陕西科技大学 Tyre air leakage detection device based on no-load ultrasonic
CN101621730A (en) * 2008-07-01 2010-01-06 索尼株式会社 Apparatus and method for detecting acoustic feedback

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201123123Y (en) * 2007-12-04 2008-09-24 富祐鸿科技股份有限公司 Audio playback device for eliminating exterior noise
CN101621730A (en) * 2008-07-01 2010-01-06 索尼株式会社 Apparatus and method for detecting acoustic feedback
CN201366912Y (en) * 2009-03-13 2009-12-23 陕西科技大学 Tyre air leakage detection device based on no-load ultrasonic

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Application publication date: 20140423