The usual unit (equal to one-tenth of a bel) used in comparing the power levels in two electrical communication circuits (or two parts of the same…
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| 释义 | the world > matter > physics > science of sound > [noun] > unit of sound (7) decibel1928 The usual unit (equal to one-tenth of a bel) used in comparing the power levels in two electrical communication circuits (or two parts of the same… phon1932 A unit of perceived loudness, defined so that the loudness in phons of any sound is numerically equal to the intensity in decibels of a pure 1000 Hz… phonon1932 Physics. A quantum or quasiparticle associated with a compressional or acoustic wave involving vibrations of atoms in a crystal lattice; a quantum… PNdB1959 perceived noise decibel(s). db.1975 decibel. Subcategories:— unit of perceived noisiness (1) — subjective unit (1) |
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