What are the noise measurements of the noise meter?
We are all aware that vibration causes noise, which includes noise from rotating equipment, impact, resonance, friction, and other sources, as well as noise from the flow field, outside noise, noise from combustion, and other sources. Our daily lives and jobs are impacted by noise production. You need a noise measuring device if you want to know how loud the noise is.
The fundamental tool for measuring noise is the noise meter, commonly referred to as a sound level meter or noise meter. A condenser microphone, a preamplifier, an attenuator, an amplifier, a frequency meter network, and an effective value indicating meter are the typical components of a sound level meter. The operating principle of the sound level meter is: the microphone converts the sound into an electrical signal, and then the preamplifier transforms the impedance to match the microphone with the attenuator. The amplifier adds the output signal to the network, applies frequency weighting (or an external filter) to the signal, and then amplifies the signal through the attenuator and amplifier to a specific amplitude before sending it to the RMS detector.
The noise meter is primarily used for noise engineering, quality control, noise measurement, and health prevention and control. For instance, it is utilized for noise assessment in a variety of settings, including air conditioners, refrigerators, audio systems, houses, offices, and traffic roadways. What categories can noise measurement be separated into, then? For everyone's convenience, Zhuhai Tianchuang Instrument Co., Ltd. outlined the following points:
1. The measurement object can be further separated into the measurement of sound source characteristics and the characteristic measurement of ambient noise (sound field).
2. It can be separated into steady-state noise measurement and unsteady-state noise measurement based on the time characteristics of the sound source or sound field. There are three categories of non-stationary noise: pulse sound, irregular noise, and periodic noise.
3. Broadband noise, narrowband noise, and noise with pronounced pure tone components can all be classified according to the frequency characteristics of the sound source or sound field.
4. Precision measurement, engineering measurement, and noise survey can all be categorised based on the accuracy requirements.
