Table of Contents
Is standard for sound level meter?
The current international standard that specifies sound level meter functionality and performances is the IEC 61672-1:2013. However, the reading from a sound level meter does not correlate well to human-perceived loudness, which is better measured by a loudness meter.
How far should a sound level meter be placed?
Measurement should be taken 1 to 3 metres from source (not directly at the source). Particularly useful if noise is highly variable; it can measure equivalent sound level over a short period of time (1 minute).
How is dB SPL measured?
The unit measure of SPL is decibels (dB). It is measured with a Sound Pressure Level Meter, such as the Pulsar Nova. Sound enters the meter through a microphone, and then the meter evaluates the sound values by converting them into electrical information and the measurement values in decibels are displayed.
At what distance should decibels be measured?
If you are measuring the loudness of a specific machine, stand as far away from the machine as the longest dimension of that machine. For example, if the machine is 6 feet long, take sound level readings from 6 feet away from any part of that machine.
How do I measure sound levels?
Download Sound Meter from the Android Market and launch the app. It starts right up to the sound meter and measures the minimum, mean, and maximum ambient sound levels in decibels (dB). It also highlights the typical noise levels of everyday sounds so you can get an idea of what those noise levels represent.
What is the normal sound level?
Common Sources of Noise and Decibel Levels A whisper is about 30 dB, normal conversation is about 60 dB, and a motorcycle engine running is about 95 dB. Noise above 70 dB over a prolonged period of time may start to damage your hearing. Loud noise above 120 dB can cause immediate harm to your ears.
What is the most recent standard for sound level meters?
This is the most recent sound level meter standard and the one that modern measurement regulations will require. This standard has been superseded by IEC 61672. Older meters meeting this standard can still be used for many applications. Originally this standard was called IEC 651, but was renamed IEC 60651.
What is the ANSI/ASA 61672 – electroacoustics sound level meters package?
The ANSI/ASA S1.4 / IEC 61672 – Electroacoustics Sound Level Meters Package also provides specifications for periodic and pattern evaluation testing. ANSI/ASA S1.4 / IEC 61672 – Electroacoustics Sound Level Meters Package includes:
Why do I need a sound level meter?
In order to get accurate and repeatable measurements, it is essential that a sound level meter meets the relevant standards. Most measurement regulations will state the standards that should be met by the equipment.
Is the NIOSH Sound Level Meter app accurate?
Although most smartphone sound measurement apps are not accurate enough to be used for legally required measurements, the NIOSH Sound Level Meter app met the requirements of IEC 61672/ANSI S1.4 Sound Level Meter Standards (Electroacoustics – Sound Level Meters – Part 3: Periodic Tests).