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  1. Formant
  2. Longitudinal waves
  3. Ambience
  4. Standing waves
  5. Fundamental Frequency
  6. Envelope
  7. Noise
  8. Harmonics
  9. Transverse Waves
  10. Masking
  11. Inharmonic overtones
  12. Overtone
  13. Partial
  14. Nodes
  15. Timbre
  16. white noise
  17. Loops
  1. a a broad resonance region that enhances the upper harmonics lying in a frequency range.
  2. b The process by which the threshold of audibility of one set of sounds is raised by the presence of another set of sounds. The amount of this is expressed in decibels.
  3. c The frequency at which the sound source vibrates as a whole. This may also be expressed as the lowest pitch that the sound source is capable of producing.
  4. d One of the frequencies produced by the complex vibration of a body. Any of these will be higher than the fundamental frequency and a whole-number multiple of it.
  5. e Those frequencies above a fundamental tone which are not a whole-number multiple of the fundamental and therefore, not in the natural harmonic series of that fundamental.
  6. f Any component of the harmonic series including the fundamental.
  7. g A series of overtones caused by the complex vibration of a body. Each one has a frequency which is a whole number of times the frequency of the fundamental. The fundamental frequency may also be referred to as the first harmonic.
  8. h The random occurrence of all pitches at equal amplitude within the audible frequency spectrum.
  9. i When a string is set in motion by regular and repeated excitation, the energy traveling back and forth along its length produces an appearance that the string is standing still yet not at rest. The resonant cavities of most musical instruments are built in such a way that when excited, they set up these with loops in certain places and nodes in others.
  10. j Waves in which the molecules of the transmitting medium were disturbed at right angles to the sound source. Ex. waves made by tuning fork, rock in water, vocal folds, vibrating strings.
  11. k Waves in which the molecules of the transmitting medium are disturbed in the same direction as the sound source. Some examples are sound from air columns and sound waves through solids.
  12. l Points of maximum displacement in sound waves.
  13. m The temporal shape of a tone consisting of an attack (or onset), initial decay, sustain, and release or final decay.
  14. n Points of minimum displacement in sound waves.
  15. o The composite of sound in a particular environment. This is sometimes thought of as all sounds present except the sounds to which one is trying to attend.
  16. p Complex sounds which are not periodic and contain overtones which are not part of the natural harmonic series, inharmonic overtones.
  17. q A sensory characteristic determined mainly by the degree of complexity of the vibration of a body.