The response of the noise meter head can be divided into four types based on sensitivity: fast slow and numerical hold. Let's briefly introduce it below.

1. Kiire. Aeg konstant of the meeter pea on 125ms, mis on üldiselt kasutatakse et mõõta ebastabiilne müra ja transport müra koos olulised kõikumised. Kiire käik lähenemised inimene kõrv's vastus to heli.

2. Aeglane. Aeg konstant of the meeter pea on 1000ms, tavaliselt kasutatakse mõõtmiseks püsiolekuks müra, ja mõõdetud väärtus on the efektiivne väärtus.

3. Peak Hold. The rising time of the watch needle is less than 20ms. It is used to measure pulse sounds with a short duration, such as guns, guns, and explosions. The measured value is the peak value, what is the maximum value. Kaugus mõõtmine instrument, kõrgus mõõtmine instrument, laser projektsioon instrument, vool meeter, GPS paksus mõõtmine instrument, tase mõõtur, lame meeter, lainekuju salvestaja, testimine kinnitus, pinge ja vool salvesti, andmekoguja, graafika salvesti, vool integreerimine instrument.

4. Pulss või pulss hoid. The rise time of the watch needle is 35ms, used to measure pulse noise with a longer duration, such as mulgustus masinad, press haamrid, etc. The measured value is the maximum effective value.

Müra meetrid saab klassifitseerida vastavalt kuni erinevad elemendid

1. From the measurement object, it can be divided into feature measurement of environmental noise (sound field) and measurement of sound source features.

2. From the time characteristics of the sound source or field, it can be divided by steady-state noise measurement and non-stationary noise measurement. non steady state noise can also be divided into perioodiline variatsioon müra, ebaregulaarne variatsioon müra, ja pulss müra.

3. From the frequency characteristics of the sound source or field, it can be divided into broadband noise, narrowband noise, noise, and noise containing prominent pure tone components.

4. From the perspective of measurement accuracy requirements, it can be divided into precision measurement, engineering measurement, and noise survey.