Calibrate meter using calibration tone with known level
object to be calibrated.
calibrationTone— Audio signal used to calibrate SPL meter
Audio signal used to calibrate the SPL meter, specified as a column vector.
trueLevel— True level of calibration tone (dB)
True level of calibration tone in dB, specified as a scalar. The true level is the known level of output by a physical calibrator.
To set the
CalibrationFactor property on an
splMeter object, the
calibrate function uses a
calibration tone, the known level output by the calibrator to produce the calibration
tone, and the
CalibrationFactor property is set according to the equation:
where k is 1 pascal relative to the reference pressure calculated in dB: