2
Some technical bits
There are some technical terms that are much bandied about in audio. While it is possible to survive without a 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 – of compression/decompression waves travelling through the air. These pressure waves are caused by something vibrating. This may be something obvious, like the skin of a drum or the string and sounding board of a violin. However, wind instruments also vibrate; vibration may be caused by blowing through a reed or across a hole, and the turbulence causes the column of air within the ...
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