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Results 1 - 10 from 173 for sound pressure levels in 0.304 sec.

Menardi - Air Filtration [Sonic Horns]
These high intensity sound waves fluidize the dust and ... is no need for structure support or special fabric considerations. Sonic horn high intensity sound pressure can eliminate or greatly reduce dust buildup on: Fan Blades Ducts Dust Collector ...
www.menardifilters.com

MMCG Projects and Experience
H Platform Decommissioning Project), Santa Barbara, California; • Proprietary studies of acoustic sound pressure levels encountered during the demolition of four oil platforms off Santa Barbara, California; • ... in Santa Barbara Channel; • Logistical support for NOAA Fisheries study of pollutant levels in gray whales off Southern California; • Logistical support for ongoing NOAA ...
www.mmcg.net

OMI: LFAS What Is It?
LFAS at sound pressure levels of 180 dB and lower. In fact, the SRP never exposed whales to sound pressure levels above 155 dB. The Navy acknowledges in the ... at sound levels above 150-160 dB. The Mediterranean and Bahamian strandings confirm that sound levels of 150-160 dB can be harmful and call into question the Navy’s current assertion that sound levels up ...
www.oceanmammalinst.org

OMI: Frequently Asked Questions About LFAS
What is the impact of humans exposed to loud underwater sounds? High intensity (pressure) sound waves are KNOWN to be harmful. Experiments with humans by the U.S. Navy have ... not equal 203. Because the decibel scale is logarithmic, higher dB values reflect much higher sound pressure levels. Therefore, a decibel level of 246 represents 20,000 times more acoustic intensity than 203 ...
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Tables in Wind Energy Comes of Age
Safety Setbacks Table 10-2. Typical Sound Pressure Levels in dB(A) Table 10-3. Decibel Addition Table 10-4. Noise Limits in dB(A) of Sound Pressure Levels Table 10-5. Community Response to Noise from Sources other than Wind Turbines Table 10-6. Sound Power Level for Selected Wind Turbines Table ...
www.ilr.tu-berlin.de

Tables in Wind Power for Home & Business
Daily Water Use Table 12-9; Daily Irrigation Use Table 13-1; Typical Sound Pressure Levels Table 14-1; Concrete Piers and Anchors for 100-foot Guyed Tower Table 14-2 ...
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Noise: Occupational: Heaing Protection Selection
A-weighted sound pressure levels (see below) There are three methods of calculating the degree of protection; for general ... method in the absence of an octave-band spectrum. Two simple measurements of the sound pressure level are combined to produce three figures. The procedure is as follows Measure the ...
noisenet.org

Information on Noise Levels, Noise Measurement Methods and "Buy Quiet" Experiences Associated with Motorcycles, June 1980
Any undesired sound. SOUND LEVEL METER: An instrument, consisting of a microphone, an amplifier, an output meter, and frequency-weighted networks, that is used for the measurement of sound levels, in a ... in Section 3. TABLE 1. MOTORCYCLE NOISE DATA SUMMARY MOTORCYCLE TYPE APPROXIMATE RANGE OF SOUND PRESSURE LEVELS (Using SAE J-331a) AT 50 FT. NOISE MEASUREMENT METHODS Street Motorcycles(1) - 1) ...
nonoise.org

Noise Free America - Model Ordinances: Anchorage, Alaska
Sound pressure means the instantaneous difference between the actual pressure and the average or barometric pressure at a given point in space, as produced by sound energy. Sound pressure ...
noisefree.org

NPC Law Library: Code of Federal Regualtions 40 CFR 211
B)............... 70.3 76.0 81.4 80.4 66.8 ....... 62.7 ........ 73.0 (The seven logarithmically added ``A''- weighted sound pressure levels of ... Add this level to Difference between any two sound pressure levels being the higher combined (dB) of the two levels (dB) ------------------------------------------------------------------------ 0 to less than 1.5 ...
nonoise.org