Glossary of Music 5A Chapters 3

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The number of vibrations per second. According to contemporary Western music standards, the pitch A4 is assigned to 440 Hz
A musical interval for which the higher pitch has a frequency that is twice that of the lower pitch
A tuning system used by modern Western instruments by which the octave is divided into 12 equal parts
Equal tempered tuning
The smallest pitch interval in Western art music; also known as semitone. The half step corresponds to a frequency ratio of 2(1/2) or about 1.0594631:1
Half step
A half step (or semiton) for which both pitches have the same letter name (e.g. C and C#)
Chromatic half step
A half step (or semitone) for which both pitches have different letter names (e.g D and C#)
Diatonic half step
Two tones with different names but the same pitch (e.g. B# and C)
Enharmonic equivalents
A pitch interval of two half steps. Also known as a whole tone
Whole step
a whole step for which both pitches have different letter name (e.g. C# and D#)
Diatonic whole step
An ordered collection of notes presented consecutively by pitch and spanning one octave. A scale is name for its tonic, which is its first and last note
A scale that divides the entire octave into a pattern of whole and/or half steps that is the same from start to middle as from middle to end (e.g. the chromatic scale). A scale that does not have this freature is asymmetrical (e.g. major diatonic scale)
Symmetrical scale
An ordered collection of four notes presented consecutively by pitch. The major tetrachord is W-W-H
An ordered collection of five notes presented consecutively by pitch. The major pentachord is W-W-H-W
The following sequence of fiatonic whole and half steps - W, W, H, W, W, W, H
Major scale
The numbering of apitch based on its position w/n a scale (e.g. F is scale degree 4 in the C major scale). Can also be identified by their name (tonic, supertonic, mediant, subdominant, dominant, submediant, leading tone, tonic) or solfege syllable (do,
Scale degree
A progression of key changes that is realized by moving upward or downward by five scale degrees. The full circle is achieved after 12 key changes
Circle of fifths
A designation of a central tone (i.e. tonic) and mode (i.e. major or minor scale)
The number of flats or sharps in a piece that are written at the beginning of each line of music notation
Key signature
A scale that contains the following subset of five pitches from the major scale: do, re, mi, sol, la. Fa and Ti are omitted.
Major pentatonic scale

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