A sound unit is any acoustic unit of sound measurement.
- bel, B - a logarithmic unit of sound pressure equal, measured a tenth of it in decibels dB.
- dB, decibel - a logarithmic unit of sound pressure; 20 times the logarithm of the ratio of the sound pressure to reference pressure, the threshold of hearing. The sound intensity may be calculated from that measurement.
- sone - a unit of perceived loudness equal to the loudness of a 1000-hertz tone at 40 dB above threshold, starting with 1 sone.
- phon - a unit of subjective loudness.
- Hz, hertz - a unit to measure the frequency of a sound.
Famous quotes containing the words sound and/or unit:
“The sound of a kiss is not so loud as that of a cannon, but its echo lasts a great deal longer.”
—Oliver Wendell Holmes, Sr. (1809–1894)
“During the Suffragette revolt of 1913 I ... [urged] that what was needed was not the vote, but a constitutional amendment enacting that all representative bodies shall consist of women and men in equal numbers, whether elected or nominated or coopted or registered or picked up in the street like a coroner’s jury. In the case of elected bodies the only way of effecting this is by the Coupled Vote. The representative unit must not be a man or a woman but a man and a woman.”
—George Bernard Shaw (1856–1950)