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Intermediate 1
Physics
Sound and Music Glossary

amplifier to frequency
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hertz to noise pollution
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octave to speed
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trace to vibration
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voltage gain to volume
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amplifier to frequency
amplifier
a device which turns a small amplitude
electrical signal into a larger amplitude
signal
amplitude
a measure of the energy of the wave
decibels (dB)
the units used to measure the loudness
of a sound
emitted
signals or energy sent out from the
source
frequency
the number of waves or vibrations in
one second
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hertz to noise pollution
hertz
the unit of frequency
laser
a concentrated source of light made up
of only one colour
loudspeaker
changes electrical energy into sound
energy
microphone
changes sound energy into electrical
energy
noise pollution
unacceptable levels of unwanted sound
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octave to speed
octave
a sound which is twice the frequency of
another is said to be one octave higher
pitch
how high or low a sound is
sonar
apparatus emitting high frequency
sounds used by ships and fishermen to
locate objects underwater
sound level
how loud a sound or noise is
speed
how fast energy travels from one place
to another
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trace to vibration
trace
line or wave seen on an oscilloscope (CRO)
tuning fork
two pronged metal fork used to make a
sound of a single frequency
ultrasound
a sound of frequency greater than
20000 Hz, a sound above the range of
human hearing
vacuum
an area of space where there are no
particles of any type present
vibration
rapid to-and- fro motion
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voltage gain to volume
voltage gain
volume
how much bigger the output voltage of an
amplifier is than the input voltage:
voltage gain = output voltage/ input voltage
how loud a sound is
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Intermediate 1
Physics
Sound and Music
End of
Glossary
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