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Results 1 - 10 from 147 for sound intensity in 0.299 sec.

Whalewatching guidelines
... ; cetacean species may respond differently to low and high frequency sounds, relative sound intensity or rapid changes in sound; vessel operators should be aware of the acoustic characteristics of the target ... ; particularly of the need to reduce as far as possible production of potentially disturbing sound; vessel design and operation should minimise the risk of injury to cetaceans should contact ...
iwcoffice.org

Glossary of Terms - Environmental Protection Agency, Ireland
Attenuation - The reduction in magnitude/intensity/concentration of a substance dispersed in a gaseous or liquid medium. B Benthic Organism (benthos ... due to, for example, cattle slurry contamination. D Decibel (dB) - The unit of measurement of sound intensity. Deforestation - The removal of trees in an area. Demersal Fish - Fish such as cod, whiting ...
epa.ie

League for the Hard of Hearing
The unit used to measure environmental sound intensity is the decibel (dBA). Zero decibels is approximately the softest sound ... hearing. In general, the louder the sound, the less time required before hearing ...
lhh.org

League for the Hard of Hearing > Education, Advocacy & Outreach
The unit used to measure environmental sound intensity is the decibel (dBA). Zero decibels is approximately the softest sound ... at high sound levels? At such intensities the sound transmits directly through ...
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Acoustics Monitoring Program
"What is Sound?". Choose Topic 1: What is Sound? 2: The Decibel Scale 3: Phase 4: Sound velocity 5: Sound pressure 6: Sound intensity 7: Sound pressure/intensity level 8. Conversion of dB from air to water 9. Source, path receiver model 10. Signal to noise ratio 11. SOFAR channel 12. Frequently used units 1. What is Sound ...
www.pmel.noaa.gov

Acoustics Monitoring Program
The Decibel Scale Choose Topic 1: What is Sound? 2: The Decibel Scale 3: Phase 4: Sound velocity 5: Sound pressure 6: Sound intensity 7: Sound pressure/intensity level 8. Conversion of dB from air to ... when doing computations involving the parameters of sound, and we'd have to multiply numbers rather than simply add and subtract them. Therefore, sound intensity is usually measured with the decibel ...
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Readings Template
By Jeremy Tatum,  Ph.D. In physics, the intensity of a sound is best expressed by the rate at which energy is ... one air-conditioner has an intensity of I watts per square metre, then four air-conditioners will have an intensity of 4I watts per square ... 86 dB. To a good approximation, for every doubling of the sound intensity, the decibel level increases by 3 dB. The situation is complicated ...
quiet.org

Noiseletter - Spring 2003, Page 10
Former noise inspector Brian Johnston told us that the sound levels often reached 120 decibels! Moreover, I personally observed ... sound level to more than 85 dB, and have that checked by a noise inspector. Please, be aware that with each increase of 3 dB the sound intensity doubles!! Should you wish to learn more about sound, we would gladly provide you ...
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Permaculture: Weeds or Wild Nature
The depth and intensity of criticism of permaculture by some environmentalists9 seems to revolve around the suggested use of ... . In the end, a garden full of local native plants may appear to be environmentally sound but if we include the power station, the market garden, commercial orchard and the rubbish ...
www.holmgren.com.au

Detailed information on the characteristics of the tiger: Communication and Sound Files.
In German, prusten means to sneeze, snort, or suddenly burst out laughing. This low-intensity sound is produced by holding the mouth closed and snorting through the nostrils. In ... meow, grunt and make a type of woofing noise. Communication - Page 1: Communication | 2: Sound Files Taxonomy | Whiskers | Hearing & Ear Spots | Eyesight | Smell | Teeth | Communication | Flehman | Genetics | Life Span ...
www.lairweb.org.nz