noise measurement

There are a number of standards for noise measurement, each with a different goal or focus, including:

The complaints then shifted to the sound created by the turbines, and extensive noise measurements were made.

Noise measurement is carried out in various fields.

Sound exposure level-in decibels-is not much used in industrial noise measurement.

In the early days, it carried out essential research into acoustics and programme level and noise measurement.

Her noise measurements were conducted as part of a broader review of subway health and safety hazards.

The A-weighting curve has been widely adopted for environmental noise measurement, and is standard in many sound level meters.

I consider it to be progress in itself that there are harmonised methods of noise measurement and common noise indicators.

Noise measurements using this weighting typically also use a quasi-peak detector law rather than slow averaging.

Scientific interest ranges from stochastic nonlinear dynamics modelling to thermal noise measurements.

Standard:IEC A-weighting is widely used in Environmental Noise measurement.

In 1980, he moved to the "approval of equipment, pollution and noise measurements" department before becoming head of the Airbus engine and CFM56 department.

As used by architectural acousticians to describe noise inside a building, typical noise measurements in SWL are very small, less than 1 watt of acoustic power.

TVIRD also carries out noise measurement, and air quality sampling both from stack emissions and for ambient air quality.

This was because certain basic measurements were used, such as THD measurement, and A-weighted noise measurement, without any proper consideration of whether these related to subjective effects.

A Type 2 meter is the minimum requirement by OSHA for noise measurements, and is usually sufficient for general purpose noise surveys.

Mr. Cooperman said that was because in many areas noise measurements were taken and that if they exceeded Federal standards, walls were automatically included in the road building.

For all civil aircraft noise measurements A-frequency-weighting is used as is mandated by the ISO and ICAO standards.

Sanchez, M.G.; et al.: Impulsive noise measurements and characterization in a UHF digitalTV channel.

Audio noise measurement is carried out when assessing the quality of audio equipment, such as is used in recording studios, broadcast studios, and in the home (Hi-Fi).

Amendment No 8, which would oblige the Commission to prepare a report on the possibility of replacing the system proposed in the long term with a system based on noise measurement.

An extra complication here is the effect of a reverberant room, and so noise measurement on appliances should state "at 1 m in an open field" or "at 1 m in anechoic chamber".

R52 building also previously contained a 5' open jet low speed tunnel, originally built as a sub-scale prototype for the larger 24' tunnel, but subsequently modified for use as a noise measurement facility.

For a given input frequency and amplitude, THD+N is equal to SINAD, provided the bandwidth for the noise measurement is the same for both (the Nyquist bandwidth).

ISO 15739:2003, Photography - Electronic still-picture imaging - Noise measurements: specifies methods for measuring and reporting the noise versus signal level and dynamic range of electronic still-picture cameras.