csd 392

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23 Terms

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pitch

How we perceive frequency

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fundamental frequency

the lowest rate of a sound's vibration

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harmonics

the tones that occur over the fundamental frequency and multiples

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of it

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spectrogram

representation of the actual force by the air molecules in 3D

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inverse square law

As sound travels away from a source

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decibel

loudness of a sound

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5 things to know about decibels

It is a ratio logarithmic nonlinear a relative unit of measure and

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expressed in terms of normal reference levels

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SPL formula

dB SPL = 20 log (P1 / P0)

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audiology specialists
medical, educational, rehabilitative, and industrial audiology
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places of employment
private practice, ENT office, hospital, school, military, government
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professions that audiologists work with
SLP, educators, engineers, pediatritions, and physical therapists.
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sound
air molecules set into motion
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wave
The motion of air molecules is compressed and rarefied
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compression
Air molecules move close together
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rarefaction
Air molecules are spread apart
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oscilation
the cycle of vibration
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sine wave
When the wave completes one cycle, which is 360 degrees
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pure tone
a single sine wave
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frequency related to waves
As the length of the wave decreases, the frequency increases (vice versa)
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amplitude related to waves

As the height of the wave increases, so does the amplitude (vice versa)

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Hertz (Hz)
cycles per second; a measure of frequency