Definition of Micropascals. Meaning of Micropascals. Synonyms of Micropascals

- kilopascal kPa 10−3 Pa millipascal mPa 105 Pa bar (non-SI unit) bar 10−6 Pa micropascal μPa 106 Pa megapascal MPa 10−9 Pa nanopascal nPa 109 Pa gigapascal GPa...
- as a 1 kHz tone with a sound pressure level of 40 decibels above 20 micropascals. The phon is psychophysically matched to a reference frequency of 1 kHz...
- in dB relative to a reference pressure of 0.00002 Pa, i.e., 20 μPa (micropascals) in SI units. This is because 20 μPa is the faintest sound the human...
- hearing is generally reported in reference to the RMS sound pressure of 20 micropascals, i.e. 0 dB SPL, corresponding to a sound intensity of 0.98 pW/m2 at 1...
- level is stated instead, in decibels (dB), with 0 dB SPL equal to 20 micropascals. A microphone is distinguishable by the voltage value produced when a...
- sound power in LwA is equal to sound pressure level in dB above 20 micropascals at a distance of 0.2821 m Sound power, denoted P, is defined by P = f...
- and pref is the standard reference sound pressure of 20 micropascals in air or 1 micropascal in water. Use of the decibel in underwater acoustics leads...
- hearing is set at around 0 phon on the equal-loudness contours (i.e. 20 micropascals, approximately the quietest sound a young healthy human can detect),...
- sound pressure and can detect pressure changes from as small as a few micropascals (μPa) to greater than 100 kPa. For this reason, sound pressure level...
- of hearing is generally reported as the RMS sound pressure of 20 μPa (micropascals) = 2×10−5 pascal (Pa). It is approximately the quietest sound a young...