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  • Amplitude

    (Acoustic) The size of a wave vibrating at a given frequency. Related to intensity measured in db (decibels)

    Beat (tone)

    (Auditory) Perceived periodic variation in loudness, resulting from accoustical interference of two near-unison tones


    (Aucoustic) Unit of pitch distance (or interval) corresponding to 1/100m of a semitone


    (Aucoustic) One tenth of a Bel, or the ratio in sound intensity of about 1:26:1


    (Aucoustic) The unordered collection of tones found in the major scale; specifically, a sevenfold pitch set whos members constitute the interval class set

    Frequency (and hertz)

    (Aucoustic) The rate at which a vibration completes a full cycle. Hz is a single cycle per second


    The lowest frequency partial of a complex tone


    (Aucoustic) Any relationship described by superparticular integers such as 1"2"3"4..., Any parial of a complex tone whos frequency is an integral multiple of the frequency of the fundamental of that tone


    The physical attribute of sound energy. The most common measure of sound intensity os sound intensity level (SIL), measured in increments of decibels.



    JND (Just Noticeable Difference)

    (Auditory) The smallest amound of change in a stimulus that can be detected above chance


    (Auditory) Subjective psychological correlate of amplitude of sound intensity perceived


    Recurring pattern of strong and weak typically in combinations of twos and threes


    (Aucoustic) The interval between two tones with the fundamental frequency ration of 1:2 or thereabouts; a listener may tolerate and even prefer an inexact one-to-two correspondence. The octave percept carries with it the strong impression that the two tones share the same pitch, although they are clearly seperated in pitch height


    (Aucoustic) Any partial of a complex tone that has a frequency greater than that of the fundamental. The term has been largely abandoned in favor of partial or upper partial

    (Tone) Partial

    (Aucoustic) Any component of a complex tone, including the fundamental. A tone partial may or may not be periodic; its duration may be equal to that of the complex tone, or it may have an exceedingly short duration

    Pitch (and pitch class)

    (Auditory) Mental sensation of a tone class


    The pattern of durations in music. In western music these patterns relate to...


    (Aucoustic) In music a pitch set ordered so as to be as nearly stepwise as its component pitches will allow


    (Aucoustic) synonymous with half-step. The smallest pitch increment in the twelve-tone equal tempered set. The terms semitone and half-step may stand for either a change in pitch name (ex E-F) or a chromatic alteration with pitch name retained (ex F-F#)


    (Aucoustic) Specific shape or contour of a single cycle or a periodic sound function as represented by a two-dimensional graph (wave forms other than sine waves are considered complex)


    (Auditory) "tone color/quality" terms that denote properties of sound (besides pitch and loudness) which combine to produce an overall auditory identity of character. (recognizing a specific persons voice over the phone)

    Tone Chroma

    (Auditory) Perceptual similarity of tones an octave apart; the perceptual manifestation of pitch class

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