CGewichtung

CGewichtung refers to the C-weighting, a standard frequency weighting used in acoustics to process sound pressure measurements. It provides a relatively flat response across the audible frequency range, with less attenuation of low and high frequencies than the more widely known A-weighting. The result is a measurement that emphasizes overall spectral content rather than mimicking human loudness perception at moderate levels.

The C-weighting is used when the goal is to assess broadband or high-level noise where low-frequency components are relevant, such as machinery noise, industrial environments, aircraft, and certain electronics testing. Measurements are typically reported as C-weighted sound levels (often noted as LC or related quantities) and can be used for peak assessments and comparative noise evaluations. Because the curve is flatter than A-weighting, C-weighted results can reveal spectral energy that A-weighting would partly suppress.

Implementation and standards are defined by international and regional standards for sound level meters, including organizations such as IEC and ANSI. In practice, the C-weighting network is implemented as a filter in the measurement chain (analog or digital) that conditions the microphone signal to produce the C-weighted level. The resulting values are not a direct estimate of perceived loudness; rather, they reflect the spectral distribution of the sound under a relatively flat weighting across frequency.

In summary, CGewichtung is a standard tool for capturing and comparing noise content across the frequency spectrum in contexts where low-frequency energy and high-frequency content are important, complementing the more perceptually tuned A-weighting used for general environmental noise assessments.