Large LCD Screen with Dual Reading Displays . The large, 2,000-count LCD display gives readings in large, clear numbers. At the same time, it shows the sound level readings using a fast-responding analog bar graph with a 50-decibel range that updates every 40 milliseconds for viewing varying trends.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.Check out these highly rated smartphone decibel meter apps – costs vary from free to less than $10 and all are rated more than 4 stars: Apps for both Android & iOS Decibel X. Turns your smartphone into a pre-calibrated, accurate and easily portable sound level meter.With this app, you can easily measure the current level of environmental noise. The best helper to detect noise. Sound meter Pro features: - Indicate decibel by gauge. - Display the current noise reference. - Display min/avg/max decibel values. - Display decibel by a graph, easy to understand. - Can calibrate the decibel for each …Our free online loudness analysis tool shows: Integrated Loudness (LUFS) Sample Peak (dBFS) True Peak (dBTP) Loudness Range (LU) Momentary maximum (LUFS) Short …Walmeck Sound Level Meter,Decibel Tester With Meters 30-130dba Noise With Max/min/data Mode MeterMeters Lcd Sound Tester With Max/min/data Tool Decibel Tester Sound Level Meter Decibel Meter Lcd. HABOTEST HT64 Sound Level Meter Portable Decibel Meter for Accurate Noise Detection in 30 130dB. AddPROCESS.AUDIO Decibel Audio Metering Plug-in. Metering and Audio Analysis Plug-in with Loudness, Levels, Histogram, Spectrum Analyzer, Phase Scope, and Stereo Cloud - Mac/PC AAX, VST, AU. $74.99. Compare. HAPPY. View all results for decibel meter at Sweetwater — the world's leading music technology and instrument retailer!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.Apr 10, 2024 · 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 measure volume fairly accurately with your phone. Our favorite decibel apps include: Decibel Pro, Decibel X, NIOSH SLM app (for iPhone), and Sound Meter & Noise Detector (for Android) Apple ... The decibel meters are available for purchase. We have researched hundreds of brands and picked the top brands of decibel meters, including Tadeto, RISEPRO, Soonkoda, LONVOX, XRCLIF. The seller of top 1 product has received honest feedback from 70 consumers with an average rating of 4.9.Sound level meters in determining the impact sound level and the noise of the building services equipment Impact sound is a special form of structure-borne sound that is generated when people walk on floors. The lower the impact sound level of a construction, the less footstep noise enters into the adjacent rooms. ... 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 Measure the surrounding sound (dB) and noise with your computer's microphone! Sound Meter (Noise & Decibel) extension enables you to measure the surrounding sound (dB) and noise with your computer's microphone This add-on help you easily measure some sound factors, such as the sound level in decibel, noise level, sound average and normalized sound value. SmarterNoise is a premium sound level meter app featuring several unique functions. SmarterNoise measures sound levels in video and audio format, records video and sound, and informs you about the risks of noise exposure. In addition, SmarterNoise includes a camera, gps-location, and easy sharing, all for free. Noise Decibel Meter, Gedaye Sound Level Meter Range 35-135dBA, SPL Meter with A Weighted, Data Hold Max/Min, Fast/Slow, Color LCD Backlit Display, Noise Detector dB reader Monitor Audio Measure Device . Brand: Gedaye. 4.6 out of 5 stars 39.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 …The Noise Meter helps remind students what the appropriate volume should be in the classroom at specific times. Did we mention the customizable microphone sensitivity, fun animations, and remote control via your phone?! Well, we don't think you yelling with excitement falls under “inside voices”, but we’ll let it slide.Sound Meter. With 10+ million installations, Sound Meter from ABC Apps is free, simple to use and continuously measures noise levels in an easily understood graphic display. The readout rates sound levels ("air conditioner," "talking," "quiet place," "silent place") until you touch the "Sound/Measure" icon. It earned 5/5 stars.Apr 9, 2014 · 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 smartphone apps to gain ... Who is Youlean? I’m Julijan Nikolic. (You may know me as Youlean). I am the developer behind Youlean Loudness Meter. In 2016, I created Youlean Loudness Meter as part of the KVR Developer Challenge (create the best free audio software). To be honest, I was already fascinated with the new loudness measurement techniques but I was a bit stunned ... 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.Digital Sound Level Meter Calibrator 94dB & 114dB for 1/2" and 1" inch Microphone, Professional Noise Decibel Calibration Tool Measurement Accuracy Check 4.5 out of 5 stars 111 $109.90 $ 109 . 90Another free classroom noise monitor app is Too Noisy, which offers both a free version and a $8 paid version. Here, an indicator swings left and right on a dial, similar to a car speedometer. When class volume is low, the arrow stays in the green and yellow range. But when students get too loud, the arrow spikes into oranges and reds, warning ...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. 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 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. ...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 …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.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 …A free classroom noise level meter, monitor and management tool. Perfect if your school kids are too noisy! Bouncing balls react to sounds from the microphone. Use this online sound meter to measure the loudness of environmental noise and check your hearing. Learn how to calibrate the sound meter and headphones, and access other free audio/sound related services. How loud is your environment? Understanding this is crucial, and a decibel meter is the key. These tools measure sound levels in decibels (dB), essential for …A decibel meter helps you measure sound levels accurately and determine whether they’re too high or too low for your needs. In this article, we’ve reviewed and … The NIOSH Sound Level Meter app can measure workplace noise to determine if workers may experience hazardous noise exposure. The free app combines the best features of professional sound levels meters and noise dosimeters into one simple tool. The app was created to empower people to test noise levels in their workplace, make informed decisions ... REED Instruments R8050 Sound Level Meter Type 2. This was one of the most accurate decibel meters we found. It measures to within 1.4 dB so you know exactly how loud your environment is. The decibel meter has a …Noises.online uses the highest sound quality, which makes the audio files relatively big. Hopefully, the next time you play a sound, it will load almost instantly straight from your browser cache. Click the pin icon to generate an URL that embeds all the sounds you have selected. Use this URL to share sounds with your friends.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 …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 ...REED Instruments R8050 Sound Level Meter Type 2. This was one of the most accurate decibel meters we found. It measures to within 1.4 dB so you know exactly how loud your environment is. The decibel meter has a …Themes: LIGHT, DARK and CLASSIC. OTHER GREAT FEATURES: - Standard time weightings (Response Time): SLOW (500 milliseconds), FAST (200 milliseconds) AND IMPULSE (50 milliseconds) - MIC Gain …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 …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.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.A classroom management tool to show noise level. Use your built-in microphone or plug in your USB microphone to enable this groovy noise level monitor. Adjust the microphone sensitivity to suit your microphone and classroom, …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. 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 ... Peak hold, Data hold and Min/Max hold. The single AC output jack (3.5mm stereo mini-plug) provides analog signals to frequency analysers, level recorders, FFT analysers, graphic recorders, etc. Includes sound level meter, windshield ball, hard carrying case and batteries. Real-time data logger with integrated SD memory card. The …30-130dB environmental noise online monitoring noise meter sensor noise transmitter decibel 4-20mA detector rs485. 5 sold. Coupon & Discount. US $1.38 off On orders over US $41.55. Color: RS485. AliExpress assurance. Safe payments Payment methods used by many international shoppers.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.A decibel meter online is an essential tool for any industrial environment as it will help identify hazardous noise levels that can have adverse effects on humans and machines. The meters allow companies to measure sound intensity accurately and quickly, ensuring proper safety and health measures are taken into account.The sound level meter meter meets IEC 61672-1 type 2, ANSI S1.4 Type 2 with plus or minus 1.5dB accuracy. It features a 35 to 130dB range plus A and C weighting with selectable fast/slow response time. Includes 9V battery and windscreen, and soft case. Meets IEC 61672-1 type 2, ANSI S1.4 type 2. 35 dB to 130 dB over 2 ranges.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:Nov 24, 2017 · Decibel Meter, Digital Sound Level Meter AP-882A Sound Monitor Tester Range from 30-130dB, Digital Decibel Meter with LCD Backlight/Max Hold/Sensitivity Adjustment and dBA/C Switch (Battery Included) 4.0 out of 5 stars 109 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 ... Another free classroom noise monitor app is Too Noisy, which offers both a free version and a $8 paid version. Here, an indicator swings left and right on a dial, similar to a car speedometer. When class volume is low, the arrow stays in the green and yellow range. But when students get too loud, the arrow spikes into oranges and reds, warning ...Measure sound loudness levels by using a microphone on your phone, laptop or desktop computer. Measure a true perceived loudness or use old SLP algorithm. Get exact ITU …The top half od the app’s main screen displays the decibel meter/sound meter along with the decibel reading. It also displays what the current noise around you is equivalent to. You can change how frequently the sound measurement is updated by tapping on the right of the meter “3x/2x/1x”. Right below that is the Text/Graph icon …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 ...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.How loud is your environment? Understanding this is crucial, and a decibel meter is the key. These tools measure sound levels in decibels (dB), essential for … Bouncy Balls – Manage classroom noise with bouncing balls! Control noisy classrooms with bouncing balls! A fun and free noise management tool. A free classroom noise level meter, monitor and management tool. Perfect if your school kids are too noisy! Bouncing balls react to sounds from the microphone. 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 ... 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. Sound intensity (or sound pressure) is measured in decibels (dB). To better show how humans perceive sound intensity, the decibel scale is logarithmic. The dB scale shows sound intensity, and the dBA scale shows sound intensity depending on the response of the human ear. For this reason, the dBA scale is typically used to describe sound level ... The NIOSH Sound Level Meter app can measure workplace noise to determine if workers may experience hazardous noise exposure. The free app combines the best features of professional sound levels meters and noise dosimeters into one simple tool. The app was created to empower people to test noise levels in their workplace, make informed decisions ... EarDial App Calibration. The EarDial app is designed to give you an approximate idea of the sound level around you and how long you can stay safely. Keep in mind that your device's microphone won't be as precise as a professional Sound Level Meter. The microphone sensitivity from different device models is slightly different.Mar 8, 2006 · The lightweight meter easily fits in your hand and can be used wherever you need it. Records sound levels from 40 to 130 decibels. Precise readings with +/-2 dB accuracy and 0.1 dB resolution. Dimensions: 9 x 2.2 x 1.7” (230 x 57 x 44mm) Weight: 5.6oz (160g) One-year limited warranty on parts and labor. 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 - OrangeSound 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 ...Decibel Meter is a professional tool to measure decibels & analyze sound frequency. This app turns your iPhone into a professional sound level meter, detects harmful noises and helps protect your health & hearing. Measure the noise level around you and protect yourself in case of excessive volume. Main Features: * A noise dosimeter will help ... 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. Relative Loudness Compared. The easiest way to explain decibels is to explain how sounds compare to other sounds. Human beings can hear very weak sounds at ~10 dB up to the pain threshold at ~140 dB. Starting at the low end, let’s list a few quiet noises you may hear in your day-to-day life: 0-5 dB – Recording studio.With this app, you can easily measure the current level of environmental noise. The best helper to detect noise. Sound meter Pro features: - Indicate decibel by gauge. - Display the current noise reference. - Display min/avg/max decibel values. - Display decibel by a graph, easy to understand. - Can calibrate the decibel for each … SmarterNoise is a premium sound level meter app featuring several unique functions. SmarterNoise measures sound levels in video and audio format, records video and sound, and informs you about the risks of noise exposure. In addition, SmarterNoise includes a camera, gps-location, and easy sharing, all for free. Free Apps Online. Productivity 493. |. (6) Get. Description. Measure the surrounding sound (dB) and noise with your computer's microphone! Sound Meter (Noise & Decibel) …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 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 ... Maztr's free online Audio Loudness Meter is a quick and easy tool you can use right in your browser, without downloading any software, to view live loudness data from your audio files. No account or login is required to use it. Our Loudness Meter lets you measure LUFS, similar to decibels, and "see" how loud your audio files are, in real time. 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 …Walmeck Sound Level Meter,Decibel Tester With Meters 30-130dba Noise With Max/min/data Mode MeterMeters Lcd Sound Tester With Max/min/data Tool Decibel Tester Sound Level Meter Decibel Meter Lcd. HABOTEST HT64 Sound Level Meter Portable Decibel Meter for Accurate Noise Detection in 30 130dB. AddSmarterNoise is a premium sound level meter app featuring several unique functions. SmarterNoise measures sound levels in video and audio format, records video and sound, and informs you about the risks of noise exposure. In addition, SmarterNoise includes a camera, gps-location, and easy sharing, all for free.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 …
Peak hold, Data hold and Min/Max hold. The single AC output jack (3.5mm stereo mini-plug) provides analog signals to frequency analysers, level recorders, FFT analysers, graphic recorders, etc. Includes sound level meter, windshield ball, hard carrying case and batteries. Real-time data logger with integrated SD memory card. The …. Cellgate
Sound Meter (Noise & Decibel) extension enables you to measure the surrounding sound (dB) and noise with your computer's microphone This add-on help you easily measure some 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 ask you about …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.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 …Who is Youlean? I’m Julijan Nikolic. (You may know me as Youlean). I am the developer behind Youlean Loudness Meter. In 2016, I created Youlean Loudness Meter as part of the KVR Developer Challenge (create the …A free classroom noise level meter, monitor and management tool. Perfect if your school kids are too noisy! Bouncing balls react to sounds from the microphone.The word list used is taken from NU-6 and is presented at either 41dB, 47dB, or 59dB. For the SRT test, the spondaic word list used is taken from ASHA 1979 and is presented between 10-60dB. For the SRT test, words are presented starting at 60 dB down to 10 dB. Once user answers 3 out of 6 words correctly at a given dB level, that is the SRT score.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.SmarterNoise. Measure and record sound levels in video and audio modes. SmarterNoise - the smarter sound meter. SmarterNoise is a premium sound level meter app featuring … Receptors (e.g. sound level meters) measure the "sound pressure level" (Lp), a decibel value of the sound by a source at a distance. The source of sound itself is calculated with a "sound power level" (Lw). This is a decibel value that represents the total acoustic output radiated. 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.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.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.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 ...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. About this app. arrow_forward. "Decibel X" is one of very few sound meter apps on the market that has highly reliable, pre-calibrated measurements and supports frequency weightings: ITU-R 468, A and C. It turns your phone device into a professional sound meter, precisely measures the sound pressure level (SPL) all around you..