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If sounds are converted into
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electrical signals, t,h~. Y fan
be made vis,ible as waveforrT]s.J
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Three
Basic
Elements
:Ot
SouncJ
- - 7
We now know that sound is vibration and that these can be seen by the eye as waveforms. But we have been
talking about "sound" in general up to now without taking into consideration that there are high squnds
and low sounds, loud sounds and quiet sounds -mellow sounds and sharp sounds . : . that is to sa1/ a gre~t
~ariety of sounds which we perceive very differe~tly. In general, sounds can be classified according to "pitch",
1 "v~lume~ '
'' . tone qual i.~Y .,, w~i. c h
1
;~r~ falled the "tp r,ee basic, el~menJs. of,aou11g' . :r, IJqo,th~s•~O E ds, sound
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s
are determined by these three basic elements.
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R e m e m b e r } - - - - - - - - - - - - - - - - - - - - - - - - - - - - ,
The "three basic elements of sound" are "pitch", "volume" and "tone quality".
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We can now have a look at how these three basic ,elements.are connected with the var[ous _ wave.forms.
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--The "first basic element
9f
sound"--
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When 'you hit th~~f<' e !Hfo~ piano, you- will no tic~ tll, h
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th' e 'soufi dslg~t \h ig~er
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~he further
.,id
the i;igh-t a key
is located and lo~er th0 ~er to the left a key is located. This "altitude" _ of a sbund is call'ed-"pitch ".
When sounds with differing pitches are compared on an oscilloscope, the number of waves per time unit
differ. The higher a sound, the larger the number of waves; the lower a sound the smaller the number of
waves.
-Low sounds
(low register)
8
Few waves
High sounds-
(high register)
Many waves
-63-
IT
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