APRIL 19, 2013 Sound Quality. What is Sound Quality? Sound quality is the result of the blending of several pitches through interference. Musical instruments.

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Presentation transcript:

APRIL 19, 2013 Sound Quality

What is Sound Quality? Sound quality is the result of the blending of several pitches through interference. Musical instruments differ in part of the instrument that vibrates and in the way that the vibrations are made.

String Instruments Instruments that make sound when their strings are plucked.  Ex: Violins, guitar, and banjos

Wind Instruments A wind instrument produces sound when a vibration is created at one end of its air column. The vibrations cause standing waves inside the air column. Pitch is changed by changing the length of the air column.  Ex: Saxophone, oboes, flute, recorders 

Percussion Instruments Make sound when struck. Different sizes are used to get different pitches. Larger the instrument, the lower the pitch. 

Noise Noise is a sound that consists of a random mix of frequencies.  Truck roaring down the highway or keys falling on the floor.

References Holt, Rinehart & Winston. Sound Quality. Holt Science & Technology: Physical Science. Austin, TX, Hardcourt Education Company.