Decibel Sound Meter Pro
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:
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.
Sound Spectrum Analyzer & FFT
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.
Decibel Meters vs. Sound Meter Apps & Cheap Noise Meters
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? The question of how accurate, for want of a better description, a noise measurement app could be using an internal microphone has been discussed at length. The most significant differences were shown when the noise contained a high proportion of low frequency content or where the measured noise contained a significant impulsive component not uncommon within a manufacturing environment. Another recent test of an sound level meter app using a new iPad showed a discrepancy of up to 10dB between measurements.
Get smart. Sign up for our email newsletter.
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.
Watch: iOS Apps | Performance Audio
“Best Sound Meter is a really neat free app that measures the decibels of sounds in the real world. It shows the decibel readings based on what it hears through. 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. There was been a growing awareness of sound level meter apps in as free downloads from the Google Play Store or the Apple App Store.