Sound level meter - Frequently Asked Questions
Question number FAQ-1175
Setting the frequency correction characteristics
■Setting the frequency correction characteristics
There are three types of frequency weighting characteristics: A/C/FLAT. These are switched using the panel switch [A/C/FLAT] depending on the measurement purpose.
Frequency Correction Characteristics by Application
Please switch the frequency correction characteristics according to your application and purpose, referring to the following table.
| A characteristic | • Supports general noise measurement. |
|---|---|
| C characteristics | - Measurement of approximate sound pressure values in acoustic measurements - Measurement of the relative magnitude of low-frequency components by comparing them with A-weighted noise measurements. - When recording AC output |
| FLAT | - Sound pressure measurement during acoustic measurements |
Switching of frequency correction characteristics
Each time you press the panel switch [A/C/FLAT], the frequency response switches in the following order:
A characteristic → C characteristic → FLAT → A characteristic →...
Last updated: 2002-01-09