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PC Audio Editing with Adobe Audition 2.0 by Roger Derry

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2

Some technical bits

There are some technical terms that are much bandied about in audio. While it is possible to survive without knowledge of them, they are a great help in making the most of the medium. However, you may wish to skip this chapter and read it later.

2.1 Loudness, decibels and frequencies

How good is the human ear?

Sound is the result of pressure: compression/decompression waves travelling through the air. These pressure waves are caused by something vibrating. This may be obvious, like the skin of a drum, or the string and sounding board of a violin. However, wind instruments also vibrate. It may be blowing through a reed or by blowing across a hole; the turbulence causing the column of air within the pipe of the instrument ...

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