properties of sound. four properties of sound frequency (pitch) amplitude (volume) timbre...
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Properties of Sound
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Four Properties of Sound
Frequency (pitch)Amplitude (volume)Timbre (quality/color)Duration (length)
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Frequency
A sound wave is created by vibrations.
The vibrating object which creates the disturbance could be the vocal cords of a person, the vibrating string and sound board of a guitar or violin, or the vibrating diaphragm of a radio speaker. 1 Hertz = 1 vibration/second
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A normal human can hear between 20 Hz and 20,000 Hz
Examples of different Frequencies…
Test your hearing….Where do you cut off?
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Frequency Examples
16.35 Hz: Lowest note for tuba, large pipe organs
32.70 Hz: Lowest C on a standard 88-key piano
65.41 Hz: Lowest note on a cello 130.81 Hz: Lowest note for viola 261.63: “Middle” C
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523.25: Lowest piccolo note 1046.50: Highest note in female
human voice 2093: Highest note for a flute 4186: Highest note on a piano 16744: Tone a non-HDTV emits
while running
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Pitch
Definition: The highness or lowness of a soundThe higher the frequency, the higher the pitch
The lower the frequency, the lower the pitch
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Amplitude
The volume level of sound
Measures the height of the sound waves
Measured in decibles (dB)
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Timbre
(“Tamber”)The type of sound created
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DurationThe length of time that a sound
is sustained Rhythm and MeterTempo: the speed of the musicBPM: Beats per minute-
measures the speed of music
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Notating Music
What is a Staff? 5 Horizontal lines that music is written on
Musical Alphabet: A,B,C,D,E,F,G
We use a clef to determine where the notes fall on the staff.
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The Staff
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Treble Clef
“G Clef” Every Good Boy Does Fine FACE
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Bass Clef
“F Clef” Great Big Dogs Fight Animals All Cows Eat Grass