re: Tennessee officially dethrones LSU as College Football's loudest stadium

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Cotton Bowl at RRR was a lot louder than that…

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Snowball's chance in hell

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If you do the math, the not to exceed time for 130.3 dB's is just under 1 second.

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0.72 seconds (ACGIH TLV/NIOSH REL)


7 seconds puts you at 415% of the OSHA PEL or 51,413% of the NIOSH REL.

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Where's the earthquake on the Seismograph?

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South Carolina did it.

Rocket Sanders’ late touchdown against Mizzou triggered earthquake sensors

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Nerding out on soundwaves...

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And one more thing, since the scale is logarithmic (an increase of 10 dB is a doubling of sound pressure), Tennessee @ 137 dB vs. LSU @ 130 dB means at their loudest, Neyland Stadium sounded roughly 1.6 times louder (about 60% louder) than death valley (assuming these number are accurate).

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OSHA and MSHA use a 5 dB exchange rate (meaning for every 5 dB increase, your allowable exposure time is cut in half). NIOSH, ACGIH and the EU use a 3 dB exchange rate.

The scientific accuracy of the 3dB exchange rate is predicated on the “Equal Energy Principle,” which asserts that the total energy of sound is the primary predictor of hearing damage. Because the decibel scale is logarithmic, a 3dB increase in Sound Pressure Level (SPL) represents a mathematical doubling of acoustic energy.

The 5dB exchange rate is grounded in the theory that intermittent noise is less damaging than continuous noise due to the ear’s ability to recover during quiet intervals. So, it includes "rest periods" to account for injury potential as a result of 5 dB increases.

Really not surprising. They have a 1980s eta DJ spinning records trying to pump up the noise.

Between that and vast amounts of empty seats in 2nd half.,. Is it really surprising?

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You are your company's EHS guy aren't you?

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I may or may not have dabbled in the field for a bit, and have possibly been around long enough to remember using OVA 128s and doing impinger sampling.

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All depends on where you measure it and how you measure it.

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Read the whole thread. That's kind of what us nerds have been saying....

LSU got up to 133db against bama in 22 when we scored in OT

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Because the decibel scale is logarithmic, a 3dB increase in Sound Pressure Level (SPL) represents a mathematical doubling of acoustic energy.

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Acoustical energy like radiation is diminished by distance from the source by exponential amounts. Like I said… all depends on where you measure it. The only close to true “apples to apples” comparison would be to put the measure ment device on the geometric center of the stadium which is not practical.

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Sort of...but it's more than that. Not only do you measure from the geometric center...but also the direction of the microphone picking up the signal would need to be standardized. While stadiums are somewhat symmetrical...they aren't exactly symmetrical. Materials of construction, reflective or absorbing projections impact sound levels...and also, the noise sources are not symmetrical. Since microphones are directional, what is the relative position relative to the noise source? The source is not symmetrical...fans in one section of the stadium will be louder than others. How is the SLM mic pointed relative to the louder/quieter parts of the stadium?

If you are really wanting to measure impact...if you could put multidirectional mics in the middle of the field around 5-6 feet off of the ground, you could get relative exposure to the players on the field...which is where the noise really matters. Unfortunately, that would get in the way of the game...which is kind of important, too.

As it is, every stadium will place their SLMs in areas where they think they will receive the maximum Sound Pressure Levels...so, that does standardize things a bit. The loudest part of this stadium that they could measure is x dBA louder than the loudest part they could measure of this stadium.

As I mentioned in an earlier post...Sound Pressure Level is one thing...but not incorporating Octave Band Analysis is the real gap. High frequency noises are significantly more reflective, but dissipate much more quickly than low frequency noise. They can characteristically be perceived differently on the field at the same sound pressure level.