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16 Cards in this Set
- Front
- Back
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Pitch
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the highness or lowness of a tone, as on a musical scale, which is principally governed by frequency. A high frequency vibrating source produces a sound of high pitch: a low frequency vibrating source produces a sound of low pitch
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Intensity
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The power per square meter carried by a sound wave, often measured in decibels
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Loudness
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The physiological sensation directly related to sound intensity or volume
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Quality
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The characteristic timbre of a musical sound, governed by the number and relative intensities of partial tones
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Partial Tone
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Single-frequency component sound wave of a complex tone. When the frequency of a partial tone is an integer multiple of the lowest frequency, it is a harmonic.
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Fundamental frequency
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the lowest frequency of vibration or first harmonic in a musical tone
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harmonic
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a partial tone whose frequency is an integer multiple of the fundamental frequency . The second harmonic has twice the frequency of the fundamental the third harmonic three times the frequency and so on in sequence
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Fourier analysis
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a mathematical method that resolves any periodic wave form into a combination of simple sine waves.
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How can the pitch of a guitar string be increased?
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by altering size, the tightness, or the tension of the string
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What is the range of normal human hearing? What happens to this range with age?
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The average human ear can hear sounds with frequencies up to 18,000 hertz As we age the upper limit of hearing in ppl gets lower.
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How do the intensities of the loudest sounds we can tolerate compare to the lowest intensities we can hear?
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intensity is purely objective and physical attribute of a sound wave and can be measured by various acoustical instruments while loudness is a physiological sensation
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Is the sound of 30dB 30 times greater than the threshold of hearing, or 10^3 times greater?
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10^3 times greater
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What exactly determines the pitch of a note?
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The lowest frequency, called the fundamental frequency determines pitch of the note
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If the fundamental frequency of a note is 200 Hz, what is the frequency of the second harmonic? The third harmonic?
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400hz, 600hz
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What exactly determines the musical quality of a note?
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The variety of partial tones that give a musical note its characteristic quality
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Why do the same notes plucked on a banjo and a guitar have distinctly different sounds?
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because their partials are different or a difference in relative intensity of partials
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