Music: Acoustic Properties (Section 1)

Sound can be described as

• the change in air pressure perceived by the inner ear

• the sequence of compression and rarefaction perceived by the inner ear

• the vibrations that are perceived by the inner ear

• the highness or lowness of pitch perceived by the inner ear

An octave can be described as

• the interval from one tone to the another tone that is eight full tones above or below the original tone

• the set of 8 pitches within a chromatic scale

• the ratio that indicates the difference in the intensities of two sounds

• the interval between overtones that is eight full overtones in wave

The set of twelve pitches contained within the octave is called

• the equal temperament tuning scale

• the chromatic scale

• amplitude

• harmonics

Sound pressure or loudness is measured by finding the ratio that indicates the difference in the intensities of two sounds. Sound pressure is measured in units of

• decibles

• octaves

• hertz

• wavelengths

When the dynamics of music is very loud

• pianissimo

• fortissimo

• crescendo

• descrescendo

The quality of sound that distinguishes it from other sounds of the same pitch and volume is referred to

• timbre

• attack

• beat

• harmonics

Each _______________________ includes three stages: an initial attack, a sustain, and a decay.

• sound envelope

• timbre

• dynamic

• overtone

When the fundamental and odd harmonic tones are heard

• sine waves

• saw tooth waves

• squarewaves

• dissonance waves

The increase and decrease in the amplitude is

• the beat

• the sum of two frequencies

• dissonance

• conssonace

The relationship between the overtones of different fundamental notes results in

• dissonance or consonance

• roughness and smoothness

• frequency and amplitude

• constructive and instructive interferences