DB: meaning, definitions and examples
๐
dB
[ diหหbiห ]
unit measurement
dB, or decibel, is a logarithmic unit used to measure the intensity of sound or the power level of an electrical signal. It is defined as one-tenth of a bel, which is named after Alexander Graham Bell. The decibel scale is widely used in acoustics, electronics, and communications to quantify sound levels and signal strengths.
Synonyms
Examples of usage
- The noise level in the concert was measured at 120 dB.
- Soundproofing can reduce noise by up to 30 dB.
- The microphone sensitivity is rated at 85 dB.
- A whisper is typically around 30 dB, while a jet engine can be over 140 dB.
Translations
Translations of the word "dB" in other languages:
๐ต๐น dB
๐ฎ๐ณ dB
๐ฉ๐ช dB
๐ฎ๐ฉ dB
๐บ๐ฆ ะดะ
๐ต๐ฑ dB
๐ฏ๐ต dB
๐ซ๐ท dB
๐ช๐ธ dB
๐น๐ท dB
๐ฐ๐ท dB
๐ธ๐ฆ dB
๐จ๐ฟ dB
๐ธ๐ฐ dB
๐จ๐ณ dB
๐ธ๐ฎ dB
๐ฎ๐ธ dB
๐ฐ๐ฟ dB
๐ฌ๐ช dB
๐ฆ๐ฟ dB
๐ฒ๐ฝ dB
Etymology
The term 'decibel' was first introduced in the early 20th century, derived from the word 'bel,' which was coined in honor of Alexander Graham Bell. The 'bel' was found to be too large for practical use, so the decibel (1/10 of a bel) became the standard measurement for sound and signal intensity. The logarithmic nature of the decibel scale allows for easier calculations and comparisons of sound pressures, making it widely adopted in various fields such as audio engineering, telecommunications, and acoustics. The usage of dB has become ubiquitous in both professional settings and everyday life, encompassing everything from measuring sound levels in concerts to evaluating the performance of audio equipment.