Pitch
* Most pitches perceived in everyday and musical sounds are virtual pitches.
* are created through the vibration of the vocal chords in the human throat
  - the components of innings
* can be a verb, a noun, and is the stem of many other words.
* changes colour to reflect conditions.
* corresponds to the fundamental frequency of the sound being perceived.
* dark coloured resinous substance that was once used to caulk seams in wooden ships.
* defines typefaces horizontally, by the number of characters that can fit in an inch.
* depends on the frequency of a sound wave.
* description of how densely information is cut into a disc.
* has to do with the angle of the propeller blades.
* indicates the frequency of the sound, or how far apart or close together the waves are.
* is an aid in marking off the identity of something, the result of a physical action
  - important measurement baseline when upgrading or replacing a propeller
  - approachs
  - connected to counting
  - controlled by opening and closing the vocal cavity
* is controlled by the frequency of the vibrations
  - speed of vibration
* is determined by the fundamental frequency of a tone
  - length of the tongue
* is determined by the number of variations per second of a sound
  - vibrations per second of a sound
  - different levels of tones in spoken communication
  - due to length, thickness, elasticity, and tension of vocal cords
  - employed in a number of formulations for treating walls, floors and roofs against damp
  - expressed in terms of the number of tufts per inch
  - gradients
  - how humans hear different frequencies
  - human perception of the fundamental frequency of sound wave
  - measured in frequency of sound vibrations per second
  - movement around the horizontal aaxis
  - one of the three subjective attributes of sound
  - our subjective perceptual experience of frequency
  - positions
* is related to frequency - number of waves that pass a given point per unit time
  - how long the vibrating column is
  - intensity
  - the frequency of the sound wave
  - simply the rate at which vibrations are produced
  - studied as it relates to properties of the sound source
* is the angle between a line in a plane and the horizontal, measured in the plane
  - the sun and the telescope pointing
  - leaning forward or backward
  - distance from one hill to the next measured parallel with the shaft
* is the high and low extent of a cymbal's sound
  - highness or lowness of a sound
  - horizontal spacing of characters measured in the number of characters per inch
* is the length of a row in bytes
  - per winding
  - listener's subjective interpretation of speech's average frequency
  - perception of how high or low a voice is
  - perceptual correlate of frequency
  - psychological response to frequency
  - rate of vibration
  - ratio of vertical rise to horizontal run
  - sap or crude turpentine that exudes from the bark of pines
  - sound a frequency produces
  - spacing of the rivets on the chain
  - theoretical forward movement that a propeller travels during one revolution
  - up and down motion of an airplane
  - y axis and determines how high it is placed in space
  - throws
* is used as an adhesive
  - for repairing ships
  - in languages in several different ways, including stress , intonation and tone
  - to close wounds in the bark to prevent water loss
  - what is perceived of the frequency and psychoacoustical attribute
  - when the nose of an aircraft moves up or down
* lister's subjective interpretation of the sound's frequency.
* petroleum by-product which is the base material for coal tar, asphalt and bitumen.
* refers to how steeply an aircraft is pointed, rotating about an axis through the wings
  - the degree our voices are high or low
* refers to the number of bytes in a row of pixels
* sensation that results from psychological response to frequency.
* thick, black, sticky material.
* waterproof covering.
+ Sound, Sound, Pitch and Intensity:
  * Pitch' is the highness or lowness of sound. Pitch is how humans hear different frequencies. Frequency is determined by the number of vibrations per second. The highest key on a piano, for instance, vibrates 4,000 times per second. Lower keys have lower frequencies. A note an octave higher than another note has twice the frequency of that note.