So our project continuously measure sound pressure, and compare with critical noise level set using. The a weighting is for general noise sound level and the c. Audio refers to sound that travels electronically through cables and audio components. The purpose of this study was to compare sound level meter slm readings obtained using a larsondavis depew, ny model 831 type 1 slm, a radioshack fort worth, tx slm, and iphone 5.
They are easy to use and give clear results on the built in lcd display 5. Calibration of slm sound level meter is only needed if you want to make measurements of absolute spl sound pressure level in db. A small a or c will be displayed on the right side of the screen to indicate the current mode. And can be set up to make alarm sound with flashing light when the noise passes the max level which can be set. After 5 minutes without any operation the meter will automatically power off.
Hold the meter in hand facing the microphone toward the source of the sound to be measured. Sl4010 your purchase of this sound level meter marks a step forward for you into the field of precision measurement. A modern sound level meter is a compact, portable instrument powered by selfcontained dry batteries. Find great deals on ebay for radio shack sound level meter and radio shack sound level meter 332050.
The solo slm sound level meter is a class 1 or class 2 multipurpose metrological instrument that is suitable for the measurement of both occupational noise and environmental noise. Apply sound calibrator on sound level meter microphone and verify that sound pressure level indicated on calibrator appears on display. Sound level meter as software application article pdf available in acta physica polonica series a 1254a. Sound level meters generally only measure the current sound levels. These sound level meters are designed for use in general noise surveys. The meter will begin displaying sound level readings. Noise levels are recorded onsite by the xl2 sound level meter and are available.
Voicetag audio note recording with the optimus sound level meters. With an intelligent software design and a measuring range of 110db, which does not require range switching, tango is very easy to operate, despite its many. This meter is ideal for basic occupational noise measurements to osha, european, canadian and many other regulations. The word acoustic means sound that travels through air. A sound level meter slm is an instrument designed to measure directly sound pressure levels while incorporating frequency weighting networks which approximate the inverse of equal loudness contours at various levels. If the lcd does not switch on, check the batteries located in the rear battery compartment. Max hold function keeps the top level held in memory. The cel620a is a data logging, integrating sound level meter that is particularly suited to assessing noise exposure in the workplace occupational noise. Note that the tripod mount is on the back of meter. An integrating sound level meter is an instrument that measures sound energy over a period of time. In many commercial and industrial settings where longterm exposure to sound can be a health hazard, dosimeters are used. Our project measure sound pressure level and display it on 162 lcd. When capturing video and sound from different sources accurate level setting helps maintain a consistency of volume across various clips, and therefore eases the sound mixing.
A sound level meter is simply a device with audiofrequency sensing capabilities that is controlled, essentially, by a microcontroller, which measures, compares, and triggers the appropriate action makes an audio announcement to reduce noise level once the critical sound level has been exceeded. The communications protocol is publicly available, published in. To disable the autopoweroff hold the fs button down while turning the unit on, then let go of the fs button. Noise measurements can be downloaded to a windows computer over a usb interface. Its capable of both a and clevel weighting for environmental noise measuring, entertainment noise measurement, and other tasks. Fast and slow time weighting to get the results you need. Apr 09, 2015 an introduction howto for the exair digital sound level meter have a question about this product. So our project continuously measure sound pressure, and compare with critical noise level set using microcontroller programming. Picture a varying noise level drawn as a continuous line on a graph. The communications protocol is publicly available, published in the sound level meter s user manual.
A modern soundlevel meter is a compact, portable instrument powered by selfcontained dry batteries. We provide an easy solution for detecting or for measurement of sound. Fusion slm is the perfect sound level meter to start working with 01db and discover the power of our products. The microphone, electronic circuitry, and indicating meter should be extremely stable with respect to variations in the temperature, humidity, and barometric pressure, as well as invariant with respect to time. General purpose sound level meters meet the strict international standards. Sound meter is also known as sound level meter decibel meter db meter noise meter sound pressure level meter. A sound level meter is simply a device with audiofrequency sensing. Use of mobile devices with multifunctional sound level. An introduction howto for the exair digital sound level meter have a question about this product. Soundprouser manual stronger security is required 3m. Smart sound level meter and vibration analyzer 01db. Powers off automatically after 15 minutes of inactivity. The needle level indicator shows the actual sound level as a displacement from the center point.
Diagram e 4 freezing the maximum sound level reading 1. Data logging sound level meters such as our dsm402sd, dsm403sd and dsm20 provide the documentation needed to prove compliance with regulatory limits on noise. Sound meter and sound pressure level meter apps on. The cel246 is an integrating sound level meter with data logging. Your digital sound level meter provides automatic or manual ranging in six measurement ranges from 30 to db. This sound meter measures from 40 to db with an accuracy of 3. This is opposed to the word audio, a term that is also often used in the field of sound measurement. Voicetag audio recording with the optimus sound level meters. A sound level meter is used for acoustic sound that travels through air measurements.
A typical meter consists of a microphone for picking up the sound and converting it into an electrical signal, followed by electronic circuitry for operating on this signal so that the desired characteristics can be measured. Turning the sound level meter on and off press the power button to turn the meter on. Place the meter on a tripod or hold the meter in hand facing the microphone toward the source of the sound to be measured. Sound level meter with audio announcement for library free download as powerpoint presentation. Selecting batteries do not mix battery types or batteries with. Press the weighting ac key to select between a and c weighting.
Professional sound engineers often use one to check the volume coming out of a pa at a big stadium show, trying to get the sound to peak at a certain level. Check out this convenient mini sound level meter from pyle. The project is also connected to audio announcement circuit. This project is aimed at designing and implementing a sound level meter, with audio announcement for maintaining peace and quietness in a. Its capable of both a and c level weighting for environmental noise measuring, entertainment noise measurement, and other tasks. The meter displays the continuous average sound level during a onesecond sampling period and updates the number on the display once a second. Dosimeters are specialized sound level meters that integrate measurements over time, providing an average noise exposure reading for a given period of time. The instruction manual of the measuring instrument should be consulted. The best type of microphone for sound level meters is the condenser microphone, which combines precision with stability and reliability.
For example, if range is set to 80 and the meter scale reads 3, the actual sound level is 77 db 803. Pdf the use of sound level meter apps in the clinical setting. Interfacing and system integration sound level meter. This multifunctional digital soundnoise level meter with lcd display is designed to meet the measurement requirement of noise engineers, noise quality. Sound level meter with audio announcement for library scribd. Task 1 measurement of noise and vibrations by sound level meter. Task 1 measurement of noise and vibrations by sound level. A 834 recording sound level meter is designed to evaluate acoustic environments or noise pollution in compliance with safety requirements and applicable legislation. If the lcd does not switch on, check the 9v battery located in the rear battery compartment.
The above notice and this permission notice shall be. Although this meter is a complex and delicate instrument, its durable structure will allow many years of use if proper operating techniques are developed. A soundlevel meter is a way to measure how loud, in decibels, music is playing. Use only batteries of the correct type, and do not mix battery types in the. This varying line represents the continuously changing sound pressure which is measured by the microphone of the sound level meter and is measured in. A66a70 april 2014 with 174 reads how we measure reads. La0203a sound level meter tripod this tripod is ono sokkis standard tripod for use with the companys sound level meters. The most common form of measurement of sound in the united states or english system is in decibels db and metric users use micropascals upa. Voicetag is a unique audio recording feature on the optimus sound level meters that lets you record notes, comments or any other useful information before each measurement.
The tango integrating basic sound level meter is a compact, ptbapproved, basic class 1 sound level meter for occupational and environmental safety applications. Soundlevel meter article about soundlevel meter by the. Managed monitoring via web portal noisescout provides a comprehensive but easytouse 247 noise monitoring solution. The range numbers refer to the center points of the seven ranges. A sound level meter is used for acoustic measurements. The current american national standard specification for sound level meters ansi s1. The sound level meter can be applied in several different ways as follows. The structure of this user manual is designed to help you find the information. Sound level meter an overview sciencedirect topics. If the lcd does not display, check that the battery is good. Cel620a integrating sound level meter with data logging for. Sound level meter, device for measuring the intensity of noise, music, and other sounds. A background noise absorber permits you to measure sound levels accurately even in the presence of high background noise.
Sound meters or sound level meters slm are used to provide an objective measurement of sound pressure levels. Sound meter the amprobe sm10 sound level meter is designed to meet the measurement requirements of safety engineers, health, industrial safety offices and quality control in various environments. The audio recording quality in the optimus green sound level meters can be. Working with this meter is very easy for basic use. I originally designed these audio level meter programs to allow the optimum setting of input levels for various sound recording functions, particularly for video editing. Most noise measurement equipment is capable of measuring, recording and storing. Then read section 2 getting started for stepbystep instructions on how to use the instrument. It includes many fusion 3g functions at a reasonable cost and efficiently responds to most acoustic measurements environment, work, buildings. The instrument captures and hold the maximum noise level.
Many types of measuring systems can be used for the measurement of sound. A summary view combining a range of measurement parameters relevant to. If you are a new user of sound level meters or new to the cr. The xl2 sound level meter is connected to the internet through the netbox using either 3g, lan or wifi communication. If you are compering sound levels, for example from two different speakers, or measuring frequency response of a component acoustical or electrical signal, only relative results may be of interest. Realtime applications for our sound level meters include sound system setups, music recording, and measurement of the noise produced by a machine or vehicle or typical of an environment.
The maximum height is 163 cm, and the minimum height can be reduced to less than 10 cm by reversing the tripod and attaching the center pole to the sound level meter. How to create a volume meter measure the sound level in the browser with javascript. Sound level meter how is sound level meter abbreviated. The meter has back light but the timer for the back light can be turn off. Realtime applications for our sound level meters include soundsystem setups, music recording, and measurement of the noise produced by a machine or vehicle or typical of an environment. It is commonly a handheld instrument with a microphone.
Sound level meter, portable digital sound level and decibel. In home audio, a soundpressure level meter can be used to help get the best sound out of your speakers. How to create a volume meter measure the sound level in. Soundlevel meter, device for measuring the intensity of noise, music, and other sounds.
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