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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." [ 1 ] A note may last less than a second, while a symphony may last more than an hour.
Duration may refer to: The amount of time elapsed between two events; Duration (finance) – the weighted average time until the various cash flows from a security, such as a bond, are received; Duration (music) – an amount of time or a particular time interval, often cited as one of the fundamental aspects of music
Time is the continuous progression of our changing existence that occurs in an apparently irreversible succession from the past, through the present, and into the future. [1] [2] [3] It is a component quantity of various measurements used to sequence events, to compare the duration of events (or the intervals between them), and to quantify rates of change of quantities in material reality or ...
Absolute, true and mathematical time, of itself, and from its own nature flows equably without regard to anything external, and by another name is called duration: relative, apparent and common time, is some sensible and external (whether accurate or unequable) measure of duration by the means of motion, which is commonly used instead of true ...
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Henri Bergson in 1927. Duration (French: la durée) is a theory of time and consciousness posited by the French philosopher Henri Bergson.Bergson sought to improve upon inadequacies he perceived in the philosophy of Herbert Spencer, due, he believed, to Spencer's lack of comprehension of mechanics, which led Bergson to the conclusion that time eluded mathematics and science. [1]
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The dual use of the word "duration", as both the weighted average time until repayment and as the percentage change in price, often causes confusion. Strictly speaking, Macaulay duration is the name given to the weighted average time until cash flows are received and is measured in years. Modified duration is the name given to the price ...