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UPL products training

21CM2-Lu MAR | Re | 08/00 |

11

UPL Instrument and Application Training, Jan - 2004

The range of human hearing

Audio Basic

Instrument Features

Applications

Comparison

Options

RSCN-Gao Yong

2

CMU200 Application Training, July - 2003

Air pressure and sound
Air pressure at sea level is about 101,325 Pascals (Pa) or 14.7 pounds per square inch (psi) or 1 kg per square cm. The variations in air pressure that our ears hear as sound are very, very small, between 20 microPascals (Pa ; one-millionth of a Pascal, or 0.00002 Pa ; microbar ; dyne/cm2 ), and 20 Pa.

Audio Basic

Instrument Features

Applications

Comparison

Options

RSCN-Gao Yong

3

CMU200 Application Training, July - 2003

Decibel levels of some sounds
Sound Source
Audio Basic