Topics

Software from Müller-BBM VAS for vibroacoustic analyses.

Pantographs usually only produce significant noise at very high speeds. This noise is caused by the interaction of air with the component (aeroacoustic noise).

Noises generated by rail vehicles during parking. VDV Notice 1541 recommends acoustic requirements for railway vehicles.

Test situation in accordance with DIN EN ISO 3095, where the vehicle passes a measuring point at a constant speed.

Measurement of inhalation exposure: formaldehyde, solvents.

The peak sound pressure level LpC,peak is the highest value of the sound pressure level with the ‘C’ frequency weighting and the ‘peak’ time weighting within the measurement period. The peak sound pressure level…

The threshold of perception at which vibrations can be consciously felt. The perceptibility threshold depends heavily on the position and also varies considerably from person to person. Consequently, only…

Vibration amplitudes that exceed the threshold of perceptibility.

Direct measurement of the noise to which employees are exposed; where applicable, during different activities or at different workstations. As a rule, measurements are taken close to the ear. …

An algorithm for the objective measurement of speech quality.

Describes the overall impression of a photo, influenced by factors such as resolution, sharpness, contrast, colour reproduction, noise levels and dynamic range.

Picture quality describes the overall perception of an image, influenced by factors such as sharpness, contrast, color reproduction, and signal-to-noise ratio. 

Assessment of all types of displays (televisions, monitors, smartphones, etc.) based on parameters such as color reproduction, sharpness, contrast, and motion handling by a trained panel. 

The smallest, individually controllable image point on a display.

The number of pixels per inch (ppi), which determines a display’s resolution.

These protected resources comprise all wild plants and animals. In addition, protected areas, protected biotopes and species conservation within the meaning of the Federal Nature Conservation Act are also included…

Plastics, paints, polyurethane foams. 

Verification of the validity of (geo)data.

See odour plume measurements.

Particulate matter (PM10) refers to particles with an aerodynamic diameter of less than 10 micrometres (µm).

Fine particulate matter (PM2.5) refers to particles with an aerodynamic diameter of less than 10 micrometres (µm).

Profile created by combining guided associations with a concept (fragrance, stench) or with the odour of a facility (e.g. from a bakery, sewage treatment plant) and the evaluation of these, which describes the…

In common usage, the term ‘pollutants’ refers to substances or mixtures of substances in the environment that may be harmful to humans, animals, plants, other organisms or entire ecosystems. The harm may result…

An algorithm for the objective measurement of speech quality.

Permanently elastic joint sealants, capacitors.

Combustion products, carbolineum, tar products.

The power consumption indicates the electrical power of a device. It is the product of voltage and current and is expressed in watts (W).

A preliminary EIA (general or site-specific preliminary assessment of the individual case) is carried out to determine, on a rough basis, whether a project, due to its characteristics (e.g. scale, risk of…

Preventative fire safety encompasses all measures designed to prevent the outbreak and spread of fires. These include structural fire safety measures, technical fire safety measures and organisational fire safety…

Primary explosion protection measures are defined as measures which prevent the formation of hazardous explosive atmospheres and/or hazardous explosive mixtures or, where complete prevention is not possible, limit…

Noise control measures aimed at reducing noise generation through design-related measures applied at the units or through the selection of quieter units offering the same performance.

Plant components that are designed to contain substances hazardous to water and serve to prevent these substances from escaping.

A test in which the quality of one or more products is assessed in order to highlight their advantages and disadvantages.

In the Geodata & Environmental Simulation team, small routines are developed using various programming languages (e.g. Python, LUA, MATLAB – and, in future, C#) and programming environments (Spyder, Visual Studio,…

Calculation method for determining immissions caused by the propagation of emissions, taking into account meteorological data and, where applicable, terrain and building geometry.

Propagation calculations are performed to determine the propagation of hazardous substances into the environment.

The following environmental components are referred to as protected resources: people, animals, plants, biodiversity, land, soil, water, air, climate, landscape, cultural heritage and other material assets. …

A description of the subjective perception of sounds and how the human ear works.

A public address system is a sound reinforcement system designed primarily for the transmission of information. Key design features of a public address system are speech intelligibility and volume. …

Public information must be drawn up for an operational area (lower and upper class) in accordance with Section 8a of the StörfallV. It contains key information on the operational area. The details that must be…

A programming language used by the Geodata & Environmental Simulation team to automate processes or develop new tools.