How far away can you hear 120 dB?
b) between 15 to 45 minutes.
b) about 95 to 100 decibels.
c) between 1 to 5 minutes.
c) about 105 to 120 decibels..
How far away can you hear 100 dB?
A noise that is 100 db at one meter will have an intensity of only 1/100 as much at ten meters. That’s 2 bels, or 20 decibels less, since a bel corresponds to a factor of ten. So at 10 meters the sound is 80 db. At 100m the intensity is down to 60 db, and so on.
How loud is 140 decibels?
Comparative Examples of Noise LevelsNoise SourceDecibel LevelDecibel EffectAircraft carrier deck140Military jet aircraft take-off from aircraft carrier with afterburner at 50 ft (130 dB).130Thunderclap, chain saw. Oxygen torch (121 dB).120Painful. 32 times as loud as 70 dB.12 more rows
What is a noise sensor?
The IoTsens sound sensor is able to record noise levels, due to its integrated microphone. It is able to analyze the surrounding ambient sound in the audible frequency spectrum for the human ear, showing collected data in dBA.
What does a sound level meter do?
A sound level meter is a measuring instrument used to assess noise or sound levels by measuring sound pressure. Often referred to as a sound pressure level (SPL) meter, decibel (dB) meter, noise meter or noise dosimeter, asound level meter uses a microphone to capture sound.
How does sound pressure decrease with distance?
The sound intensity decreases inversely proportional to the squared distance, that is, with 1/r² from the measuring point to the sound source, so that doubling of the distance deceases the sound intensity to a quarter of its initial value.
How does a noise sensor work?
The sound sensor works in a similar way to human sound sensing; it has a diaphragm that converts air pressure vibrations into electrical signals that are conveyed to the NXT brick/computer. Microphones work this way, too.
What is the use of sound sensor?
The sound sensor is one type of module used to notice the sound. Generally, this module is used to detect the intensity of sound. The applications of this module mainly include switch, security, as well as monitoring. The accuracy of this sensor can be changed for the ease of usage.