What is a sound calibrator?
A Sound Level Calibrator is used to produce a known sound pressure level. It is a hand-held device that emits an audible tone of very accurate level and frequency. Typically the calibrator is fitted over the meter’s microphone and the reading is either checked manually by the user or automatically by the meter.
How do you use a sound calibrator?
Using a Sound Calibrator All sound level meters have either an adjustment screw or some form of automatic calibration feature. Carefully place the calibrator over the microphone, ensuring it is a snug fit, and switch it on. Check that the display reads the level that will be specified in the manual.
What is the sound level?
Sound level refers to various logarithmic measurements of audible vibrations and may refer to: Sound exposure level, measure of the sound exposure of a sound relative to a reference value. Sound power level, measure of the rate at which sound energy is emitted, reflected, transmitted or received, per unit time.
What is calibration microphone?
They send test tones to all the speakers and subwoofer, and use a microphone to pick up the sound of the speakers in your room. The exact positioning of the auto calibration microphone is crucial for achieving accurate results.
What does auto calibration do?
How do I calibrate my speakers? Many of today’s receivers include auto-calibration. You place a microphone where you will typically sit, and it listens for a series of test sounds from all the speakers in order to calibrate the system.
How do I calibrate my SPL?
SPL Calibration Procedure Set the meter to C weighting and select the Input device is a C Weighted SPL Meter option in the mic cal file entry for the input being used. Set the meter range to suit the measurement level used in the check levels process (the 80dB range is recommended for the Radio Shack meter)
What is the sound level calibrator?
The Sound Level Calibrator is a handy source for fast & easy calibration of sound level meter, microphone and sound measuring system. Design to check the accuracy of many types of sound instruments. Moreover, the calibrator employs a solid state integrated circuitry that provides accurate and stable performance.
How do I check the calibration of my Noise Meter?
Before making noise measurements the Calibrator is fitted over the meter’s microphone and the reading is either checked manually by the user or automatically by the meter. Checking a meter’s calibration is always good practice and for many applications it is essential.
Why should recrecords be kept of calibrations?
Records should be kept of these calibrations as evidence that the correct procedures have been followed. The Calibrator should meet the standard IEC 60942 to either Class 1 or Class 2. The Class 1 calibrator is a little more accurate than the Class 2.