90 decibel = Likely hearing damage if sustained for more than 8 hours. 80 decibel = Potential but unlikely hearing damage if sustained for more than 8 hours. 70 dB = Just annoying, but probably safe. 60 dB= Typical conversational volume. 50 dB = A quiet, library conversation. 40 decibel = A whisper. 30 dB= Barely audible sound.Parts Express Mini Digital Sound Level Meter. Visit the Parts Express Store. 214. $2398. One-button operation for easy handheld measurements. A-Weighted. Large 3/4" backlit display clearly shows your reading. Auto power off. Threaded insert for standard tripod mount.September 29, 2023 by GEGCalculators. To convert decibels (dB) to watts per square meter (W/m²), you can use the formula: W/m² = P₀ * 10^ (dB/10), where P₀ represents the reference power level in W/m². This formula relates the relative intensity in dB to the actual power per unit area in W/m².A decibel meter, therefore, is a device designed to measure and quantify these levels of sound pressure like an online sound level meter. Its primary function is to capture and …Sound Meter Edit Code. The content above is provided by a user, and is not endorsed by Microsoft. Report abuse if you think it's not appropriate. Report abuse. Why do you find it offensive? Submit Cancel Report sent. Thank you for helping keep Microsoft MakeCode a friendly place! ... It supports a graphical view to see the last 300 samples in a graph. It also shows statistical results such as min, average, and max values of the recorded samples. Features: - Indicates decibel level - Display the current noise reference - Display min/avg/max decibel values - Display decibel by graph This item Decibel Meter Sound Level Meter, High Accuracy db Meter Classroom Noise Meter with A/C/Z Weighted, spl Meter with Logging 30-130dB Audio Noise Measure Device with Data Hold Backlight Decibel Meter, RISEPRO® Digital Sound Level Meter 30 – 130 dB Audio Noise Measure Device Backlight MAX/MIN, Data Hold …The easiest place to find a sound level meter to purchase is online. Class 2 meters start at around $150 USD and class 1 meters start around $350 USD. 2. Calibrate the sound level meter according to the manufacturer’s instructions. You need to calibrate your SLM before each use. Consult the owner’s manual for your ...This item Decibel Meter Sound Level Meter, High Accuracy db Meter Classroom Noise Meter with A/C/Z Weighted, spl Meter with Logging 30-130dB Audio Noise Measure Device with Data Hold Backlight Decibel Meter, RISEPRO® Digital Sound Level Meter 30 – 130 dB Audio Noise Measure Device Backlight MAX/MIN, Data Hold …Download Decibel Meter: Sound dB Level and enjoy it on your iPhone, iPad, and iPod touch. *** Decibel Level Table*** 0-20dB is very quiet and almost impossible to feel 20-40dB Quiet, Soft Talk 40-60dB Normal, ordinary indoor talking 60-70dB noise, speak loudly "70-90dB is noisy and damages nerve cells" = "70-90dB is noisy and damages nerve ...dB Meter Pro enables you to overlay the ambient noise level onto photos and videos and to export the results. Noise. Criterion. Professional standards for noise measurement at …Mar 10, 2023 · The easiest and most accessible way to measure how loud your headphones are is by using a sound pressure level (SPL) meter. You can either use a physical decibel meter, or an application on your phone (here’s a highly-rated one for Android and a NIOSH-developed one for iOS ). Neither choice is perfect, but the physical decibel meter is more ... Does this online meter transfer data to the server? No, all audio data is being used locally. What standard does this meter use? It uses the ITU-R BS.1770-4 standard. How accurate is this meter compared to other professional SPL meters? Analyzing from the file will give you accurate results comparable to results from other professional ... Handheld, 30 to 130 dB Digital Sound Meter with Data Logger. The handheld HHSL402SD with integrated condenser microphone, it can display sound levels to a resolution of 0.1 dB, use an SD card to record/store data. View Specs. Filter By.Key Takeaways: Sounds above 80 dB can cause hearing damage, and we should limit the exposure to prevent hearing loss. Decibel apps are a convenient way to …Three simple noise meters you can use in your classroom: Bouncy Balls is a free online noise meter that I have been using for a couple of years. It shows the volume of the noise in a room by displaying a set of colorful bouncing balls on your screen. The louder your students are, the higher and more frequently the balls on the screen bounce.Mar 14, 2019 · Preparation. Ask an adult to help you search for a “decibel meter” or “sound meter” app on a smartphone or tablet. There are plenty of free options available, but some apps may have ads or ... Description. Track environmental noise around you with this easy-to-use decibel meter app with detailed visual analysis. The Decibel Meter app uses the built-in microphone to determine the level of sound it detects and displays it in decibels (dB). The microphone audio data is used to calculate dB (Decibels) / AF (Audio Frequency) readings for ...A Decibel Meter, Sound-Pressure Level Meter (SPL), or Sound-Level Meter is a device that measures the loudness level of sound (especially noise) around us. It is noteworthy that Decibel (dB) is the unit for loudness. Like every other electronic device, picking the best decibel meter is a professional’s job. One must have a thorough ...PirateFavoriteLetter. •. Audio Technica makes a pretty good app that has an RTA/dB meter. I've run it side-by-side with a SPL meter and the app isn't as accurate. But for a quick SPL reading, the app is good enough. If you're recording and want to check the noise floor, I'd also opt for an actual SPL meter. Reply.The use of smartphone sound measurement apps can have a tremendous and far-reaching impact in the areas of noise research and noise control in the workplace as every smartphone can be potentially turned into a dosimeter or a sound level meter [Maisonneuve et al., 2010; Williams and Sukara, 2013]. However, in order for …Utilizing a sound level measuring device like a decibel detector or meter can show us exactly where our noise exposure stands. In the workplace, they can let us know if the sound levels are safe over an 8 hour shift. In pro audio, we use them to dial in acoustics and get great sound. They’re a fairly simple machine with big benefits.A Decibel Meter, Sound-Pressure Level Meter (SPL), or Sound-Level Meter is a device that measures the loudness level of sound (especially noise) around us. It is noteworthy that Decibel (dB) is the unit for loudness. Like every other electronic device, picking the best decibel meter is a professional’s job. One must have a thorough ...Nov 20, 2019 · All of these factors mean that while sound meter Apps are great for giving an indication of noise levels, they can’t be relied upon for exact sound levels; furthermore, they have no legal standing so can’t be used to support noise complaints. They are good, however, for measuring exposure times and for a quick spot check to give an idea of ... The XL2 Sound Level Meter helps you comply with sound limit regulations. Simply power up the meter, select the pre-configured measurement profile and press start. The XL2 measures and logs all levels without further user action, and gives you a red light when you are above the limit. A compressed audio wav-file may be recorded simultaneously.Digital Sound Meter Decibelimeter 30~130dB Measure Decibels Sound Level Noise Decibelios Decibel Monitor. $17.98. (1313) 1pc Sound Decibel Meter, Digital Sound Level Meter,Noise Detector, Noise Meter, Audiometer, Sound Monitor,Frequency Range: 31.5Hz~8kHz, LCD Display, Condenser Microphone, Real-time Measurement, Stable …Noise mapping tool. Create sound level models and noise maps for free in your browser. Add point sources, screening barriers, buildings and decibel receiver points with detailed frequency information. See the sound paths and how these are affecting the levels. Interact with your model, modifying positions and parameters and see the calculation ...Write to us: [email protected]. DB Chart. 150-160 dB = Eardrum rupture. 140 decibel = Aircraft carrier deck. 130 dB = Jet take-off (100 meters), gun blast at close range. 120 dB= Human pain threshold, loud rock concert. 110 decibel = Serious hearing damage if sustained for more than 1 hour.Best Bang for the Buck. RISEPRO. Decibel Meter. Check Price. Easy to Read. This is a good choice if you’re looking for a sound level meter on a budget and just need basic information. Pros. Straightforward with a clear, easy-to-read LCD screen. 40- to 130-decibel range. Battery saving auto off.Decibel meter - a simple solution to noise & sound measurement. A decibel meter, also known as a sound level meter, is an instrument to measure sound pressure level. This device uses a microphone to capture sound. The decibel meter then converts the sound pressure to an electrical signal or shows it on its small display.The decibel meters are …Dec 13, 2023 · Extech 407730. As a prominent manufacturer in the automation and controls industry, Extech put their advanced technology to work in this affordable, but professional-grade sound level meter. The Extech 407730 is available in two different options. The singe range model – our primary choice – can measure sound levels between 40 and 130 decibels. Dec 13, 2023 · Extech 407730. As a prominent manufacturer in the automation and controls industry, Extech put their advanced technology to work in this affordable, but professional-grade sound level meter. The Extech 407730 is available in two different options. The singe range model – our primary choice – can measure sound levels between 40 and 130 decibels. Write to us: [email protected]. DB Chart. 150-160 dB = Eardrum rupture. 140 decibel = Aircraft carrier deck. 130 dB = Jet take-off (100 meters), gun blast at close range. 120 dB= Human pain threshold, loud rock concert. 110 decibel = Serious hearing damage if sustained for more than 1 hour. Sound level meters are given a classification of I or II depending on which international standard they meet. Type 1 or Class 1 sound meters are used for incredibly precise noise measurements (such as in laboratories) as they are able to measure the smallest sound levels. Class 2 sound level meters are usually used in workplaces for assessing ...Too Noisy Pro. A Fun and engaging way to help manage noise levels in a classroom environment. As the noise level in a classroom increases beyond an acceptable level the noise level meter dynamically indicates the level of noise, and the background graphics within the app change to reflect the noise levels.Then click Submit to view the deciBel rating. Input the intensity of a sound in Watt/m^2 and outputs the deciBel level of the sound. Get the free "DeciBel Calculator" widget for your website, blog, Wordpress, Blogger, or iGoogle. Find more Physics widgets in …Reading on a decibel meter. While searching our database we found 1 possible solution for the: Reading on a decibel meter crossword clue. This crossword clue was last seen on April 9 2024 LA Times Crossword puzzle. The solution we have for Reading on a decibel meter has a total of 10 letters. Answer.iPhone Screenshots. DecibelMeter - Noise Meter App makes your iPhone as a sound level meter, it can measure noise level. WHY YOU WILL LOVE DecibelMeter - Noise Meter App. - Very simple & easy to use. - Super quick and accurate dB measuring. - All-in-one meter. - Maximum, current and average values. - A gauge meter displaying values.Online Classroom noise meters. Here are our top picks for online classroom noise meters: 1. Bouncy Balls. Bouncy Balls is a free web tool that helps you manage your classroom noise. Bouncy Balls has an integrated noise meter that automatically detects different noise levels in surrounding environment and sends off alert signals. Does this online meter transfer data to the server? No, all audio data is being used locally. What standard does this meter use? It uses the ITU-R BS.1770-4 standard. How accurate is this meter compared to other professional SPL meters? Analyzing from the file will give you accurate results comparable to results from other professional ... Decibel Meter, LONVOX Digital Sound Level Meter with 30 to 130 dBA Measuring Range, Backlit LCD Display, MAX/MIN Noise Measurement, Data Hold, SPL Meter for Classroom, Noisy Neighbor, Office, Factory. 4.4 out of 5 stars …The outdoor decibel meter PCE-428-EKIT is an optimal sound level meter for measurements at workplaces, construction sites, in traffic, airports, etc. The decibel meter is a class 2 device and is equipped with an octave band frequency filter. Optionally, the decibel meter PCE-428-EKIT can be upgraded with a 1/3 octave band filter.BrandREED Instruments. ModelR8060. Weight1 pounds. Pros. The most accurate decibel meter on this list. Can get it with NIST certification, which is necessary if you’re using the reading in court. The digital and analog recordings make it easy to read fluctuating noise. Cons.A decibel meter is a measuring instrument used to assess noise or sound levels by measuring sound pressure. Often referred to as a sound pressure level (SPL) meter, decibel (dB) meter, noise meter or noise dosimeter, a sound level meter uses a microphone to capture sound. The sound is then evaluated within the device and …Decibel meters are basically useless for headphones unless you get some kind of reference device cheapest being a MiniDSP EARS at 240. Better to figure it out electrically. Or assume you are listening too loud in general. They test headphone speakers the same way they test larger speakers.A Professional dBA Noise Meter App. "Decibel X" is one of very few noise meter apps on the market that has highly reliable, pre-calibrated measurements and supports dBA, dBC. It turns your iOS device into a professional sound level meter, precisely measures the sound pressure level (SPL) all around you. This extremely useful and beautiful tool ...Sound Meter HQ. This is a noise level app that measures the sound level of your surroundings using your phone’s built-in microphone. The app displays the decibel level on the screen, along with a gauge that indicates the level of noise. It can measure sounds within the range of 0-140 dB and also displays the minimum and maximum …From the research I did at the time, it was the most accurate currently available. https://apps.apple.com/gb/app/splnfft-noise-meter/id355396114. When I’ve tested …4) Sound Meter – Decibel. Our pick for fourth best dB meter is “Sound Meter – Decibel.” This app has an awesome user interface and several different ways to display the dB’s it is reading.SoundEar helps companies worldwide reduce noise at work. We do this through our 20 years of experience in the noise monitoring industry, and through our unique offer of not only measuring noise, but also visualizing noise. Creating awareness about noise is the first step towards making a change, and we believe the best way to create awareness ...Physics Sound Audio. An oscilloscope is a useful tool for anyone working with electrical signals because it provides a visual representation of the signal's shape, or waveform. This allows you to measure properties of the wave, such as amplitude or frequency. The initial signal above is a 200Hz sine wave, which has an amplitude of 5 volts. Noise mapping tool. Create sound level models and noise maps for free in your browser. Add point sources, screening barriers, buildings and decibel receiver points with detailed frequency information. See the sound paths and how these are affecting the levels. Interact with your model, modifying positions and parameters and see the calculation ... Weatherproof Outdoor Monitors. Online Noise Monitor. 3G/4G Connection. LiveNoise Monitors with WiFi Link. Sound level meters, noise dosimeters and environmental noise monitors. The online shop from NoiseMeters offers buyers professional advice on product selection. Supplying all parts of the USA with most items available from stock. Noise mapping tool. Create sound level models and noise maps for free in your browser. Add point sources, screening barriers, buildings and decibel receiver points with detailed frequency information. See the sound paths and how these are affecting the levels. Interact with your model, modifying positions and parameters and see the calculation ... A decibel meter, therefore, is a device designed to measure and quantify these levels of sound pressure like an online sound level meter. Its primary function is to capture and …Sound Meter (Noise & Decibel) extension enables you to measure the surrounding sound (dB) and noise with your computer's microphone. This add-on helps you easily measure some important sound factors, such as the sound level in decibel, noise level, sound average, and normalized sound value. When you open the app for the first time, it may …90 decibel = Likely hearing damage if sustained for more than 8 hours. 80 decibel = Potential but unlikely hearing damage if sustained for more than 8 hours. 70 dB = Just annoying, but probably safe. 60 dB= Typical conversational volume. 50 dB = A quiet, library conversation. 40 decibel = A whisper. 30 dB= Barely audible sound.Sound Meter HQ. This is a noise level app that measures the sound level of your surroundings using your phone’s built-in microphone. The app displays the decibel level on the screen, along with a gauge that indicates the level of noise. It can measure sounds within the range of 0-140 dB and also displays the minimum and maximum …SoniChek Professional Sound Level Meter. Add to Cart. Compare $ 345. 27. Model# SLM400-KIT. TRIPLETT. Sound Level Meter/Calibrator Kit. Add to Cart. Compare $ 286. 16. Model# SLM400-NIST. TRIPLETT. SLM400 Sound Level Meter. Add to Cart. Compare $ 476. 84 (1) Model# SLM600-KIT. TRIPLETT. Sound Datalogger Kit with Calibrator.The SL510 is extech’s ultra-compact sound meter which meets class 2 standards with ±1dB high accuracy. Allows for Quick and reliable sound level testing. It features a large backlit display for easy viewing and measures a & C weighting from 35 to 130dB with fast and slow response time mode. Size is small enough to conveniently fit in …Decibel meters are basically useless for headphones unless you get some kind of reference device cheapest being a MiniDSP EARS at 240. Better to figure it out electrically. Or assume you are listening too loud in general. They test headphone speakers the same way they test larger speakers.Our sound meter app can provide accurate decibel data and show you how the decibel goes. Get noise data more comprehensively and more accurately: Minimal, average and maximal decibel. Real-time decibel in dial and graph. Levels of noise. Calibrate before use for precise data. Review measurement histories. Customize your … Protect your hearing. This award-winning app combines the best features of professional sound level meters and noise dosimeters into a simple, easy-to-use package. - Developed by experienced acoustics engineers and hearing loss experts. - Completely FREE – No ads, no limited features, and no in-app purchases. - Tested and validated (accuracy ... A decibel meter is a measuring instrument used to assess noise or sound levels by measuring sound pressure. Often referred to as a sound pressure level (SPL) meter, decibel (dB) meter, noise meter or noise dosimeter, a sound level meter uses a microphone to capture sound. The sound is then evaluated within the device and …Decibel Meter is an application for measuring sound volume in decibels (dB). This application in realtime shows current value of sound volume. The main indicator shows current sound volume value and …Best Bang for the Buck. RISEPRO. Decibel Meter. Check Price. Easy to Read. This is a good choice if you’re looking for a sound level meter on a budget and just need basic information. Pros. Straightforward with a clear, easy-to-read LCD screen. 40- to 130-decibel range. Battery saving auto off.Sound level meters are given a classification of I or II depending on which international standard they meet. Type 1 or Class 1 sound meters are used for incredibly precise noise measurements (such as in laboratories) as they are able to measure the smallest sound levels. Class 2 sound level meters are usually used in workplaces for assessing ...Understanding Sound Level Meters. A sound level meter is an electronic device used to measure the intensity of sound in decibels (dB). It helps you gauge the loudness or sound pressure level (SPL) of a particular environment or source. Sound meters are versatile instruments that find applications in various fields, including:Simply select any WAV, MP3 or AAC file above, and within seconds we'll provide you with an accurate measurement of the Loudness Penalty for your music on many of the most …Oct 23, 2019 · Portable sound level meter is light and compact design, easy to carry with you and operate with one-hand ; Noise meter comes with 3 pcs AAA batteries, a wind-proof sponge ball and user manual. The decibel meter has been adjusted properly, it can be used immediately after the battery being installed. Mar 29, 2023 · Sound Meter HQ. This is a noise level app that measures the sound level of your surroundings using your phone’s built-in microphone. The app displays the decibel level on the screen, along with a gauge that indicates the level of noise. It can measure sounds within the range of 0-140 dB and also displays the minimum and maximum sound levels ... A sound level meter, also known as a decibel meter or noise level meter, is a device used to measure the intensity of sound in a given environment. It is commonly used in various industries, including construction, manufacturing, and entertainment, to assess and monitor noise levels. The main purpose of a sound level meter is to …The outdoor decibel meter PCE-428-EKIT is an optimal sound level meter for measurements at workplaces, construction sites, in traffic, airports, etc. The decibel meter is a class 2 device and is equipped with an octave band frequency filter. Optionally, the decibel meter PCE-428-EKIT can be upgraded with a 1/3 octave band filter.The Decibel Intensity Calculator is a specialized tool designed to convert sound intensity levels from watts per square meter (W/m²) into decibels (dB). This conversion is essential for evaluating sound levels in a manner that corresponds to the human ear's response. It finds application across various disciplines, including noise …Jul 21, 2023 · Decibel Pro app Decibel Pro: dB Sound Level Meter. iTunes rating: 4.7 stars. Measure noise at home or in the workplace and calibrate home or professional audio equipment with this free app which includes a noise dosimeter, spectrum analyzer with RTA, FFT and Spectogram, as well as a hearing test. Sound Meter (Noise Detector) iTunes rating: 4.6 ... Microphone Sound Analyzer. Δf=2.00 kHz x:undefined,y:undefined 0.0 2.0 4.0 6.0 8.0 10.0 -80 -70 -60 -50 -40 -30 -20 -10 0 f (kHz) audio level (dB) Frequency Spectrum Δt=5.94 ms x:undefined,y:undefined Press play button to start. 0.0 1.2 2.4 3.6 4.8 6.0 7.2 8.4 9.6 10.8 12.0 13.2 14.4 15.6 16.8 18.0 19.2 20.4 21.6 22.8 -0.3 -0.1 0.0 0.1 0.2 0. ...The CM-170 SPL Meter has Data Logging with a Clock feature, Fast/Slow Time Weighting, and Electronic Calibration. The CM-170 is an affordable IEC 61672-1 Class 2 and ANSI S1.4 Type 2 rated sound pressure level meter that competes with some of the best audio level meters on the market. The Galaxy Audio CM-170 comes complete with a carry case ...The CK310 Noise Measurement Kit includes a Cirrus CR310 Integrating Sound Level Meter, and Cirrus CR514 Calibrator. Both are provided with calibration certificates and both meet the requirements of the EU noise at work regulations and HSE guidelines. This is our lowest cost option for a noise at work risk assessment.Preparation. Ask an adult to help you search for a “decibel meter” or “sound meter” app on a smartphone or tablet. There are plenty of free options available, but some apps may have ads or ...Too Noisy Pro. A Fun and engaging way to help manage noise levels in a classroom environment. As the noise level in a classroom increases beyond an acceptable level the noise level meter dynamically indicates the level of noise, and the background graphics within the app change to reflect the noise levels.Too Noisy Pro. A Fun and engaging way to help manage noise levels in a classroom environment. As the noise level in a classroom increases beyond an acceptable level the noise level meter dynamically indicates the level of noise, and the background graphics within the app change to reflect the noise levels. Decibel Meter, TopTes TS-501B Sound Level Meter with 2.25” Backlit LCD Screen, Portable SPL Meter with A/C Weighted, Range 30-130dB, MAX/MIN, Data Hold, Use for Home, Noisy Neighbor, Factory - Orange. 817. 600+ bought in past month. $2999. Save 10% with coupon.
From the research I did at the time, it was the most accurate currently available. https://apps.apple.com/gb/app/splnfft-noise-meter/id355396114. When I’ve tested …. Mobileconnect
iPhone decibel meter apps are ace, years ago I did a bunch of research and this one smaller one had the most accurate rating. Can't recall the name but other comments have suggestions. They tested it against fairly expensive spl meters and it came up incredibly similar. The thing isn't that it has a shitty mic, is that its shitty mic is consistent. Sound level meters are given a classification of I or II depending on which international standard they meet. Type 1 or Class 1 sound meters are used for incredibly precise noise measurements (such as in laboratories) as they are able to measure the smallest sound levels. Class 2 sound level meters are usually used in workplaces for assessing ...Apr 30, 2016 · Buy Decibel Meter, RISEPRO® Digital Sound Level Meter 30 – 130 dB Audio Noise Measure Device Backlight MAX/MIN, Data Hold Auto Power Off Dual Ranges HT-80A: Sound & Noise Meters - Amazon.com FREE DELIVERY possible on eligible purchases Dec 21, 2023 · 3. Take the Log10 of your answer and multiply by 10. To finish solving, all you need to do is take the base 10 logarithm of your answer, then, finally, multiply by 10. This accounts for the fact that decibels are logarithmic units with a base of 10 — in other words, an increase of 10 decibels means that the loudness of the sound has doubled. DECIBEL PLAYER. Play the sound of. at 50 decibels. -. PLAY. You will be asked permission to use your. microphone to take decibel readings. This online tool will let you …Decibel X. Would you like a free app that converts your smartphone into a precalibrated sound level meter that is both accurate and portable? Decibel X can do just that. With an intuitive user interface, plenty of features for measuring the intensity of nearby sound, and a standard measurement range that extends from 30 decibels to 130 decibels ...The PCE-322A from PCE Instruments is an affordable sound level meter with data logging support. The internal 0.5MB memory can store 32,700 data points. There is only one sample rate option: 2 samples per second. While this will yield high density data, it means the PCE-322A can only store 4.5 hours of dB data. check price.Buy PeakMeter PM6708 LCD Digital Audio Decibel Sound Noise Level Meter dB Meter Measuring Logger Tester online today! JG Superstore by Juan Gadget More choices, More discounts! Super is Better! FAST Delivery LOWEST Price Everyday LOCAL Warranty EXCELLENT Customer Service OFFICIAL Dealer & Distributor of many trusted brands: …Utilizing a sound level measuring device like a decibel detector or meter can show us exactly where our noise exposure stands. In the workplace, they can let us know if the sound levels are safe over an 8 hour shift. In pro audio, we use them to dial in acoustics and get great sound. They’re a fairly simple machine with big benefits.Nov 25, 2022 · 【Decibel Meter with A/C Weighting】 TopTes TS-501B decibel meter uses a precise condenser microphone to capture sound. It’s equipped with A-weighting and C-weighting facilities that measure noise levels from 30 to 130 dB with an accuracy of ±1.5 dB, Frequency from 30 to 8,000Hz. The outdoor decibel meter PCE-428-EKIT is an optimal sound level meter for measurements at workplaces, construction sites, in traffic, airports, etc. The decibel meter is a class 2 device and is equipped with an octave band frequency filter. Optionally, the decibel meter PCE-428-EKIT can be upgraded with a 1/3 octave band filter..