‎Decibel X: dB, dBA Noise Meter on the App Store

Note the loudness of a sound also depends on your distance from the source of the sound it will get quieter as you get farther away —so to do a direct comparison of different sounds, you have to keep this distance constant. What does all this have to do with a smartphone? If you wanted to measure sound levels previously, you would have had to buy a stand-alone decibel meter—a device with a microphone and a screen that would display the sound level in dB. Modern smartphones, however, which already contain built-in microphones can run apps that will display the sound reading in dB directly on the phone’s screen. So if you want to explore the sounds of the world around you, all you need is a phone!
free db meter app

Sound Level Meter Apps – How Accurate Are They?

Decibel Meters vs. Sound Meter Apps – How accurate are they? There is a growing number of sound meter Apps available as free downloads on Google Play Store and the Apple Store, many of these provide standard noise measurement functions, but when used with the internal microphone in your smartphone or tablet do not offer compliant noise measurements, and therefore have no standing legally.

This is because: The decibel meter and its microphone must meet IEC For compliant measurements, the microphone and noise meter must be calibrated with an acoustic calibrator before and after your noise measurements. It is not possible to calibrate the internal microphone nor smartphone apps.

Because of the range of smartphones available on the market, there is also the potential for significant variations in their accuracy and performance comparing model to model, thus allowing discrepancies to arise as a result. In most smartphones, the internal microphone is positioned in the lower edge of the device i. Users have shown a tendency to hold the device with the microphone typically facing their body, or laid out on a table both of which affect the frequency response of the device.

By the nature of the core purpose of these inbuilt microphones, they are also designed to cancel out some noise. The location of the microphone on tablets is more variable as these are not intended to be used for calls, however, they are invariably laid flat on a table when measurements are taken not held, and also include noise cancelling. It is possible to use a mobile with a suitable external microphone which meets the relevant instrument standards. Nevertheless, some Health and Safety Officers may find these smartphone apps can serve a purpose for carrying out quick spot checks of noise when a professional decibel meter is not available, or as range-finding devices, and may help workers make quick educated decisions about whether they need to put their hearing protection on.

One commercial company now offers a sound level meter app in a watch. This app measures noise at the person’s wrist, not their ear though, and has similar issues with the microphones to mobile phone offerings, however it does give you noise exposure times. Cheap noise meters – should you use them? Many of the points made above about the smartphone Apps apply equally when we look at the accuracy and compliance limitations of cheap noise meters.

Noise measurement instruments, and decibel meters, in particular, can vary hugely in cost as well as in complexity. Although there are many professionals who are using complicated and expensive decibel meters every day, for the majority of health and safety practitioners, noise is just a small part of their jobs.

They understandably are looking for the cheapest and easiest meter to ‘get the job done’. There are several applications, like with the smartphone Apps, that these simple meters might be adequate for, such as testing fire alarm noise levels and simple office or machinery noise level checks.

However, many of these meters are not legally compliant with international noise measurement standards. This means that they cannot be used to measure occupational noise in compliance situations for example in workplace noise assessments under the Noise at Work Regulations. The Pulsar Nova Range of sound level meters is ideal for meeting these needs and more.

The minimum requirements for a compliant noise at work sound meter are that it is an integrating averaging meter compliant with IEC The equivalent continuous A-weighted sound pressure level LAeq The maximum C-weighted peak sound pressure level LCPeak If there is a need to prescribe suitable hearing protection it should ideally also: Measure equivalent continuous C-weighted sound pressure level LCeq ; or The Leq in octave frequency bands.

Are smartphone Apps and cheap noise meters worth it? So, should sound meter Apps and cheap noise meters be used where there is a requirement to be compliant with a standard or regulation? These are the standards, regulations and guidelines to which most Health and Safety Officers and Environmental Officers are working to around the world. Pulsar is not here to approve or disapprove of the use of these sound meter Apps or cheap noise meters.

Apps can play a role when used with the appropriate microphone, and likewise, there are many applications where they and very basic noise meters can be an effective way to take quick indicative measurements. Contact us to find out more.

Go from Quantum to Cosmic

This highly-rated, free app turns your smartphone into a pre-calibrated, accurate and easily portable sound level meter. It has a standard. dB Meter is free app which provides professional-quality measurement results, calibrated using an actual Nor high-precision decibel meter. With dB Meter. Today we are looking at decibel meter apps to measure noise levels. have here is a professional level sound meter app with a free price tag.

Science with a Smartphone: Decibel Meter

Decibel Meters vs. Sound Meter Apps – How accurate are they? There is a growing number of sound meter Apps available as free downloads on Google Play Store and the Apple Store, many of these provide standard noise measurement functions, but when used with the internal microphone in your smartphone or tablet do not offer compliant noise measurements, and therefore have no standing legally.

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Environmental users were looking for levels and sound recording of concern to them, or populating complaint management apps issued by councils, for example. Internal or External Microphone?

REVIEW: Decibel Meters vs. Sound Meter Apps & Cheap Noise Meters

“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 . With a free app and your Android phone, we’ll show you how you can turn minimum, mean, and maximum ambient sound levels in decibels (dB). It even has a noise meter on its Web site that lets you listen to a range of. dB Meter is free app which provides professional-quality measurement results, calibrated using an actual Nor high-precision decibel meter. With dB Meter.

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