Measurement microphone calibrations and their uncertainty
نویسندگان
چکیده
منابع مشابه
Uncertainty and Dimensional Calibrations
The calculation of uncertainty for a measurement is an effort to set reasonable bounds for the measurement result according to standardized rules. Since every measurement produces only an estimate of the answer, the primary requisite of an uncertainty statement is to inform the reader of how sure the writer is that the answer is in a certain range. This report explains how we have implemented t...
متن کاملUncertainty of Nist Airspeed Calibrations
The National Institute of Standards and Technology (NIST) provides calibration services for airspeed instruments. Here, we describe NIST’s recently upgraded airspeed calibration system and its uncertainty. At NIST, airspeed calibrations are performed over the range 0.15 m/s to 40 m/s in the wind tunnel that has a test cross section of 1.5 m by 2.1 m. The standard for airspeed measurement is a f...
متن کاملNIST SURFACE ROUGHNESS AND STEP HEIGHT CALIBRATIONS, Measurement Conditions and Sources of Uncertainty
Parameters of surface roughness and step height are currently measured at the National Institute of Standards and Technology (NIST) by means of a computerized/stylus instrument. For roughness height parameters, we use a calibration ball as a master to calibrate the instrument to be employed during a measurement. Profiles of the calibrating master and the roughness sample under test are stored i...
متن کاملUncertainty Analysis for Angle Calibrations Using Circle Closure
We analyze two types of full-circle angle calibrations: a simple closure in which a single set of unknown angular segments is sequentially compared with an unknown reference angle, and a dual closure in which two divided circles are simultaneously calibrated by intercomparison. In each case, the constraint of circle closure provides auxiliary information that (1) enables a complete calibration ...
متن کاملUncertainty in water level predictions due to various calibrations
The modelling of river processes involves numerous uncertainties, resulting in uncertain model results. Knowledge of the type and magnitude of uncertainties is crucial for a meaningful interpretation of the model results and the usefulness of results in decision making processes. This case study comprises an uncertainty analysis of the effect of the discharge data used for calibration on the wa...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Journal of the Acoustical Society of America
سال: 1995
ISSN: 0001-4966
DOI: 10.1121/1.414430