How far away can you hear 85 decibels?
Table 1 is a chart of sounds commonly heard by people involved in agricultural activities.
Continuous sounds of 85 decibels or higher are considered hazardous.
Any time you have to shout to be heard by someone standing 3 feet away, the noise level is probably greater than 85 decibels..
How far can 120dB be heard?
A 120dB(A) @ 1 metre sounder has a 70dB distance of approximately 300 metres i.e. ten times the effective distance and, more importantly 100 times the coverage area.
How far away can you hear 140dB?
The jet plane, 140dB at 50m, would be 170dB at 1m-ish, working the math the opposite direction. The plane is audible outdoors (70dB) out to roughly 50km (again, off by a doubling or two). You can easily hear a passing jetliner at 30-50k feet plus some horizontal distance (10-20km).
How far away can someone hear you?
People can hear you from up to 20 m away for normal chatting, 100 m for shouts, 10 m for whispers. As a rule of thumb, open the Mini-Map and set it to be about 4 cm (1.5 inches) square. The circle of compass-direction letters (N, E, S etc) are roughly chatting distance away from you.
What does 20 dB sound like?
Decibels ExplainedDecibel LevelSource10 dBNormal breathing20 dBRustling leaves, mosquito30 dBWhisper40 dBStream, refrigerator humming7 more rows
What is the loudest sound possible?
Strictly speaking, the loudest possible sound in air, is 194 dB. The “loudness” of the sound is dictated by how large the amplitude of the waves is compared to ambient air pressure. A sound of 194 dB has a pressure deviation of 101.325 kPa, which is ambient pressure at sea level, at 0 degrees Celsius (32 Fahrenheit).
How many decibels can kill you?
150 decibels is usually considered enough to burst your eardrums, but the threshold for death is usually pegged at around 185-200 dB. A passenger car driving by at 25 feet is about 60 dB, being next to a jackhammer or lawn mower is around 100 dB, a nearby chainsaw is 120 dB.
How loud can a human yell?
Human screams can be quite loud, possibly exceeding 100 dB (as of March 2019, the world record is 129 dB!) —but you probably want to avoid that because screams that loud can hurt your ears!
How quiet is 40 dB?
Comparative Examples of Noise LevelsNoise SourceDecibel LevelDecibel EffectLibrary, bird calls (44 dB); lowest limit of urban ambient sound40One-eighth as loud as 70 dB.Quiet rural area.30One-sixteenth as loud as 70 dB. Very Quiet.Whisper, rustling leaves20Breathing10Barely audible11 more rows