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Interonset Interval
In music a time point or ''timepoint'' ( point in time) is "an instant, analogous to a geometrical point in space". Because it has no duration, it literally cannot be heard, but it may be used to represent "the point of initiation of a single pitch, the repetition of a pitch, or a pitch simultaneity", therefore the beginning of a sound, rather than its duration. It may also designate the release of a note or the point within a note at which something changes (such as dynamic level). Other terms often used in music theory and analysis are '' attack point''Lejaren Hiller and Ramon Fuller, "Structure and Information in Webern's Symphonie, Op. 21", ''Journal of Music Theory'' 11, no. 1 (Spring 1967): 60–115. Citation on p. 94. and ''starting point''. Milton Babbitt calls the distance from one time point, attack, or starting point to the next a ''time-point interval'', independent of the durations of the sounding notes which may be either shorter than the time-point interval (r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Music
Music is the arrangement of sound to create some combination of Musical form, form, harmony, melody, rhythm, or otherwise Musical expression, expressive content. Music is generally agreed to be a cultural universal that is present in all human societies. Definitions of music vary widely in substance and approach. While scholars agree that music is defined by a small number of elements of music, specific elements, there is no consensus as to what these necessary elements are. Music is often characterized as a highly versatile medium for expressing human creativity. Diverse activities are involved in the creation of music, and are often divided into categories of musical composition, composition, musical improvisation, improvisation, and performance. Music may be performed using a wide variety of musical instruments, including the human voice. It can also be composed, sequenced, or otherwise produced to be indirectly played mechanically or electronically, such as via a music box ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Half-time (music)
In popular music, half-time is a type of meter (music), meter and tempo that alters the rhythmic feel by essentially ''doubling the tempo resolution'' or metric divisive rhythm, division/level in comparison to common-time. Thus, two measures of approximate a single measure of , while a single measure of 4/4 emulates 2/2. Half-time is not to be confused with ''alla breve'' or Time signature#Complex time signatures, odd time. Though notes usually get the same value relative to the tempo, the way the beat (music), beats are divided is altered. While much music typically has a Beat (music)#Backbeat, backbeat on quarter note (crotchet) beats two and four, half time would increase the interval between backbeats to double, thus making it hit on beats three and seven, or the third beat of each measure (counting (music), count out of an 8 beat measure (bar), common practice in half time): 1 2 3 4 1 2 3 4 1 2 3 4 5 6 7 8 1 2 3 4 Essentially ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhythm
Rhythm (from Greek , ''rhythmos'', "any regular recurring motion, symmetry") generally means a " movement marked by the regulated succession of strong and weak elements, or of opposite or different conditions". This general meaning of regular recurrence or pattern in time can apply to a wide variety of cyclical natural phenomena having a periodicity or frequency of anything from microseconds to several seconds (as with the riff in a rock music song); to several minutes or hours, or, at the most extreme, even over many years. The Oxford English Dictionary defines rhythm as ''"The measured flow of words or phrases in verse, forming various patterns of sound as determined by the relation of long and short or stressed and unstressed syllables in a metrical foot or line; an instance of this"''. Rhythm is related to and distinguished from pulse, meter, and beats: In the performance arts, rhythm is the timing of events on a human scale; of musical sounds and silences that occur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quarter Note
A quarter note ( AmE) or crotchet ( BrE) () is a musical note played for one quarter of the duration of a whole note (or semibreve). Quarter notes are notated with a filled-in oval note head and a straight, flagless stem. The stem usually points upwards if it is below the middle line of the staff, and downwards if it is on or above the middle line. An upward stem is placed on the right side of the notehead, a downward stem is placed on the left (see image). The Unicode symbol is U+2669 (). A quarter rest (or crotchet rest) denotes a silence of the same duration as a quarter note or crotchet. It is notated with the symbol . In some older music it was notated with symbol .''Rudiments and Theory of Music'' Associated Board of the Royal Schools of Music, London 1958. I,33 and III,25. The former section shows both forms without distinction, the latter the "old" form only. The book was the Official ABRSM theory manual in the UK up until at least 1975. The "old" form was taugh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rest (music)
A rest is the absence of a sound for a defined period of time in music, or one of the musical notation signs used to indicate that. The length of a rest corresponds with that of a particular note value, thus indicating how long the silence should last. Each type of rest is named for the note value it corresponds with (e.g. quarter note and quarter rest, or quaver and quaver rest), and each of them has a distinctive sign. Description Rests are intervals of silence in pieces of music, marked by symbols indicating the length of the silence. Each rest symbol and name corresponds with a particular note value, indicating how long the silence should last, generally as a multiplier of a measure (music), measure or whole note. * The quarter (crotchet) rest (𝄽) may take a different form in older music.''History of Music Notation'' (1937) by C. Gorden, p. 93. * The four-measure rest or longa (music), longa rest are only used in long silent passages which are not divided into bar ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sixteenth Note
Figure 1. A 16th note with stem facing up, a 16th note with stem facing down, and a 16th rest. Figure 2. Four 16th notes beamed together. In music, a 1/16, sixteenth note ( American) or semiquaver (British) is a note played for half the duration of an eighth note (quaver), hence the names. It is the equivalent of the semifusa in mensural notation, first found in 15th-century notation. Sixteenth notes are notated with an oval, filled-in note head and a straight note stem with two flags (see Figure 1). A single sixteenth note is always stemmed with flags, while two or more are usually beamed in groups. A corresponding symbol is the sixteenth rest (or semiquaver rest), which denotes a silence for the same duration. As with all notes with stems, sixteenth notes are drawn with stems to the right of the notehead, facing up, when they are below the middle line of the musical staff (or on the middle line, in vocal music). When they are on the middle line (in instrumental music) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Duration (music)
In music, duration is an amount of time or how long or short a note, phrase, section, or composition lasts. "''Duration'' is the length of time a pitch, or tone, is sounded." A note may last less than a second, while a symphony may last more than an hour. One of the fundamental features of rhythm, or encompassing rhythm, duration is also central to meter and musical form. Release plays an important part in determining the timbre of a musical instrument and is affected by articulation. The concept of duration can be further broken down into those of beat and meter, where beat is seen as (usually, but certainly not always) a 'constant', and rhythm being longer, shorter or the same length as the beat. In serial music the beginning of a note may be considered, or its duration may be (for example, is a 6 the note which begins at the sixth beat, or which lasts six beats?). Durations, and their beginnings and endings, may be described as long, short, or taking a specific amount ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Onset (audio)
Onset refers to the beginning of a musical note or other sound. It is related to (but different from) the concept of a transient: all musical notes have an onset, but do not necessarily include an initial transient. Onset detection In signal processing, onset detection is an active research area. For example, the MIREX annual competition features aAudio Onset Detection contest Approaches to onset detection can operate in the time domain, frequency domain, phase domain, or complex domain, and include looking for: * Increases in spectral energy * Changes in spectral energy distribution (spectral flux) or phase * Changes in detected pitch - e.g. using a polyphonic pitch detection algorithm * Spectral patterns recognisable by machine learning techniques such as neural networks. Simpler techniques such as detecting increases in time-domain amplitude can typically lead to an unsatisfactorily high amount of false positives or false negatives. The aim is often to judge onsets similar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Performance Practice
Historically informed performance (also referred to as period performance, authentic performance, or HIP) is an approach to the performance of classical music which aims to be faithful to the approach, manner and style of the musical era in which a work was originally conceived. It is based on two key aspects: the application of the stylistic and technical aspects of performance, known as performance practice; and the use of period instruments which may be reproductions of historical instruments that were in use at the time of the original composition, and which usually have different timbre and temperament from their modern equivalents. A further area of study, that of changing listener expectations, is increasingly under investigation. Given no sound recordings exist of music before the late 19th century, historically informed performance is largely derived from musicological analysis of texts. Historical treatises, pedagogic tutor books, and concert critiques, as well as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
