THE SOUND

UNIT 1

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THE SOUND

4- Parts of the Ear

1-The Sound

2- Acoustics

3- Qualities of sound

index

Sound is a physical phenomenon that is produced when an object vibrates. The vibration is transmitted in the form of sound waves and it must travel through a “medium” such as air, water and wood. The speed of sound through air is 340 meters per second (m/s).

tHE SOUND

Acoustics is the scientific study of sound. It also refers to the properties of a room that cause it to reflect, refract, and absorb sound. It is important to control how sound behaves to design spaces such as auditoriums, theaters and libraries.

acoustics

TIMBRE

DURATION

PITCH

INTENSITY

Every sound has four qualities: intensity, pitch, duration and timbre.

qualities of sound

Is the quality of sound that depends on the wave amplitude and allows us to distinguish between loud and soft sounds. We represent intensity in scores by means of dynamic markings.

INTENSITY

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Is the quality of sound that depends on the wave frequency and allows us to distinguish between low and high sounds. We represent different pitches in scores by means of musical notes.

PITCH

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Is the quality of sound that depends on the wave persistence and allows us to distinguish between long and short sounds. We represent duration in scores by means of note values and rests.

DURATION

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Is the quality of sound that allows us to identify the object that produces the sound (different voices and instruments). It depends on the shape of the object, the material from which it is made and the way the sound is made.

TIMBRE

Parts of the Ear

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