sound level monitoring Articles | Environmental XPRT

Correction in dB(A) in relation to distance from the sound source

We always mention different sound levels combined with distances, which leads to regular questions about our calculation methods. It’s really simple - click here for the sound chart, and you can see the exact official corrections at specific distances. We have also added an example calculation. Aboma Sound Power Level calculation: LWA = LpAm + 10 lg S/S0, ref. 1 pW LpAm = Average ...

Oct. 16, 2014

By BBA Pumps North America Inc.

Multifunctional environmental meter for 5 measuring parameters – sound, light, wind temperature and humidity

Environmental factors influence humans, animals and plants as well as buildings and their surroundings. The condition of stored goods, production processes, machines, apparatuses and buildings need to be protected. It is important to maintain a room climate that meets the needs of the users but at the same time does not cause any climate-related damage to the building. PCE Instruments has added ...

Dec. 18, 2019

By PCE Instruments

What is a Data Logging Sound Level Meter?

Looking to buy a sound level meter? You’ll probably see the term “data logging sound level meter” quite frequently. But what exactly is a data logging sound level meter and what does it mean for your noise measurements? Sound level meters have come a long way since Cirrus starting manufacturing their own models in the 1970s. The advances in computing technology has made it far ...

Apr. 15, 2015

By Cirrus Research plc

Sound level meters from PCE Instruments for any application

PCE Instruments manufacture and sell high-quality sound level meters for any application: from small hand-helds for home use to portable sound level cameras for localisation of a source of noise in large buildings. A high number of people has to deal with inacceptable noise levels in private and/or work environments. Noise is a very individual parameter and is not clearly definable. It is ...

Aug. 16, 2019

By PCE Instruments

In-situ noise level mapping for vehicle floor carpet

Noise level mapping of test vehicles' floor carpets was undertaken for three frequency bands, that is, low-(2,000 Hz) to compare noise control treatment performance and effectiveness. On-road tests including idling conditions and constant speed tests of 40, 60 and 80 kph were undertaken. Noise level contour maps indicate that the luxury class test vehicle is most affected by very low-frequency ...

Jan. 19, 2010

By Inderscience Publishers

DuPont LoWave Acoustic Material with Low-Frequency attenuation case study

A major U.S. manufacturer of laboratory equipment was concerned that one of its newest pieces of equipment would not gain widespread acceptance in the marketplace due to its high overall noise level and unpleasant sound quality. Company officials needed to improve the sound signature of the equipment improving the comfort level of people working around it, without altering product design in a way ...

May 30, 2013

By NEVA Associates

In-depth workplace noise risk assessments

Don’t miss a thing with a custom-made noise measurement kit Pulsar Safety Professional System: the-all-in one solution to noise measurement Pulsar Instruments’ Safety Professional noise measurement system offer Safety, Health, Environmental and Quality (SHEQ) experts a custom-made solution for resolving their complex workplace noise risk assessment issues. Currently, employers are ...

Sep. 29, 2014

By Pulsar Instruments Plc

An experimental investigation of the sound level produced by bulldozers with various maintenance schedules

This study was made to understand and evaluate the effect of maintenance on noise production from bulldozers through experimental measurements of sound levels in a large open cast mine. Assessment of sound pressure levels at each periodic maintenance interval revealed that maximum sound level reduction was achieved at 1000 h maintenance schedule. For other periodic maintenance intervals, ...

Oct. 27, 2008

By Inderscience Publishers

Hospital noise at night exceeds WHO recommended levels

Lack of sleep due to hospital noise on wards is a problem for many patients around the world as sleep plays an important role in regulating the impact of pain and the immune system as well as people’s mental and emotional well-being. It, therefore, follows that there is growing evidence that shorter and poorer quality sleep in hospitals is linked with slower patient recovery and longer ...

Aug. 2, 2018

By Pulsar Instruments Plc

Monitoring of a spark ignition engine malfunctions using acoustic signal technique

This manuscript presents a fault detection method for a SI engine at variable speeds using acoustic signal technique. Two faults were addressed: misfire and the malfunction of manifold absolute pressure (MAP) sensor. The main objective is to detect these two faults by measuring the sound pressure level (SPL) in decibels (dBA) at different engine speeds and one octave frequency bands in the ...

Aug. 12, 2014

By Inderscience Publishers

Grab £1000 of free benefits with the dBAdvantage Card from Cirrus Research

The dBAdvantage Card from Cirrus is the quick and easy way to grab £1000 of FREE benefits when you buy a Cirrus sound level meter or doseBadge noise dosimeter kit. As a dBAdvantage Card member you’ll automatically get access to the following benefits: 1. A FREE place, each year for 3 years, on a Cirrus Product Training Course worth £750 2. A 10% discount on the costs of ...

Sep. 24, 2013

By Cirrus Research plc

Noise Monitors and Meters

Sound level meters Description and ApplicationsThe sound level meter is a lightweight instrument for the measurement of sound pressure level (SPL) in decibels. All ANSI-approved meters meet minimum requirements that include an A-weighted network, a slow-response meter characteristic, and a fully graduated scale with measurements ranging from 80 to 130 dBA. The Type II meter is most frequently ...

Jan. 1, 1999

By U.S. Department of Labor Occupational Safety & Health Administration (OSHA)

Understanding A-C-Z noise frequency weightings

What are the different frequency weightings and why do you need to know? Understanding the difference between noise frequency weightings may be one of the most important things you need to know about when measuring sound. This is because picking the wrong one on your sound level pressure meter could result in your results being irrelevant for the purpose and at worst invalid (not legally ...

Jan. 7, 2019

By Pulsar Instruments Plc

Noise Level Meters for Controlling Noise at Work

Noise level meters are sophisticated devices used to determine the sound level by capturing and measuring changes in sound pressure. They tend to be hand-held and will be pointed towards the source of noise. Put simply, sound enters the noise level meter via a small microphone. It is then processed and measurement data or values are displayed digitally in decibels to inform the user if an ...

May 16, 2016

By Pulsar Instruments Plc

Why you should use a windshield with your sound level meter

We are often asked about the use of the windshield that is supplied with our noise measurement instruments. We agree, it does not look much and can be a bit cumbersome. However, a windshield is an important accessory. We recommend that you have it to hand with you at all times and use it both indoor and outdoor while taking measurements. A windshield comes as standard with our complete sound ...

Feb. 15, 2016

By Pulsar Instruments Plc

Noise 101: What is Equivalent Continuous Sound Level (Leq)?

For anyone that is measuring sound, you’ve probably come across the term Leq or Equivalent Continuous Sound Level. But what is it and how can it help us when measuring noise with a sound level meter? Setting the Scene Imagine you work on a busy construction site that is operating all day. You have diggers, cranes, trucks and other plant machinery all working intermittently and creating ...

Jun. 8, 2015

By Cirrus Research plc

I Need A Noise Dosimetry Survey for OSHA Compliance

OSHA requires a noise dosimetry survey to determine if workers are exposed to noise that could damage their hearing. This is more than just using a sound level meter to take some noise readings. A noise dosimeter is actually worn by the worker for a shift. This enables a true evaluation of a worker’s noise exposure as he/she moves about the workplace. The noise dosimeter is worn for a full ...

Nov. 1, 2018

By Atlantic Environmental, Inc.

How Often You Should Calibrate A Sound Level Meter

Do you calibrate a sound level meter frequently? Most sound level meter users know they must calibrate their sound level meters but a questions I frequently get asked if “how often?” Here’s my best practice advice so you can calibrate with confidence. What Do We Mean by Sound Level Meter Calibration? Before we go into the how often you should be calibrating, I just want to ...

May 14, 2015

By Cirrus Research plc

Thinking outside the box with Quantum

We’re launching our brand-new cloud-based noise monitoring solution at Autosport International Engineering. More than just a black box, Quantum is a noise monitoring solution that has been designed in conjunction with some of the UK’s biggest theatres and entertainment venues. The Quantum will revolutionise the way you measure sound levels and protect people from the risks associated ...

Jan. 6, 2020

By Cirrus Research plc

ACOEM: DUO introduces the “Smart Noise Monitor”

A new generation of Environmental noise measuring instruments, devoted to: Classical hand-held sound level meter measurements, using the built-in keyboard and screen or a wireless remote control (Wi-Fi, 3G), Short, medium or long-term stand-alone measurements, the operator having full remote control of the instrument. The “Smart Noise Monitor” DUO is particularly well suited ...

May 10, 2010

By ACOEM