Casio CZ-5000 - Page 22

The
number
of
waves
is
actually
the
number
of
the
vibrations
causing
the
sound.
For
example,
if
we
are
listening
to
a
violin,
it
would
be
the
number
of
vibrations
of
the
strings
within
a
certain
period
of
time.
The
higher
the
sound
the
larger
the
number
of
vibrations
per
time
unit;
the
lower
the
sound
the
smaller
the
num-
ber.
The
number
of
vibrations
within
the
space
of
one
second
is
generally
called
the
frequency
and
expressed
in
units
called
Hz
(Hertz).
100
Hz
indicates
that
vibrations
occur
at
the
frequency
of
100
times
per
second.
The
larger
the
number
of
Hertz,
the
higher
the
sound.
Also
note
that
doubling
the
frequency
of
a
sound
will
raise
it
by
one
octave,
so
we
can
say
that
frequency
and
pitch
are
related
logarithmically.
The
range
of
frequencies
that
can
be
heard
by
the
human
ear
depends
on
the
individual
but
is
generally
con-
sidered
to
be
in
the
approximate
range
of
20
Hz
to
20,000
Hz.
442Hz @- 884Hz
Qe 22 2
“Remember ~
The
pitch
of
a
sound
depends
on
the
number
of
waves
per
time
unit
(the
vibration
frequency)
and
becomes
higher
as
the
frequency
increases.
= Sound Volume
——The
“second
basic
element
of
sound”
If
you
hit
a
piano
key
forcefully,
the
sound
will
be
loud.
If
you
hit
it
softly,
the
sound
will
be
soft.
When
viewed
on
an
oscilloscope,
this
change
in
sound
volume
can
be
seen
as
a
difference
in
the
height
of
the
waves.
The
height
of
the
waves
is
called
their
amplitude.
The
larger
the
amplitude
the
louder
the
sound.
Softly =
Forcefully
AE
Ze
ani
camp
|
Waves
are
high.
Cc
anv
Waves
are
low.
The
sound
volume
is
determined
by
the
amplitude
(height
of
a
wave)
—
the
larger
the
amplitude
the
larger
(louder)
the
volume.
Even if
the sam
volume,
When so:
selves di:
waveforr
waveforr
and squa
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The CZ-
as basic
shown at
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