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- 相对于 Matlab，Octave如何? - 知乎
octave唯一的优点也就是占内存小了（< 500M），然而不知是不是安装的姿势不对，每次打开软件 跑个小命令，简直比PS和AE还慢。 Matlab 要流畅很多，而且功能齐全，用的人多所以社区环境好，计量和机器学习包括金融工程都可以，唯一的缺点就是实在太占内存了。
- piano - What is an octave? - Music: Practice Theory Stack Exchange
The concept of the octave - the recurring cycle of notes as we iterate through the sonic spectrum perceived as octave equivalence - need not be described using only our 8 note division Such differences in how the physical "octave" is delimited highlights what we explained previously: The language of music is not the language of mathematics
- Why are there twelve notes in an octave? - theory
Well the octave represents a doubling halving of hertz (cycles per second) So, midi middle C is 256 hz, and if you know your computer numbers, you'll realise that the next octave C's are at 512, 1024, 2048, etc and the lower octaves are at 128, 64, and (pimp your ride) 32 Earthquakes, by the way, show up at around 11 hertz
- Why is a doubling of frequency called an octave?
Heptatonic (7 notes per octave): the most common modern Western scale Hexatonic (6 notes per octave): common in Western folk music Pentatonic (5 notes per octave): the anhemitonic form (lacking semitones) is common in folk music, especially in Asian music; also known as the "black note" scale
- Scilab,Octave,Sagemath区别与比较? - 知乎
Scilab,Octave,Sagemath区别与比较? - 知乎
- tuning - Was the term octave coined after the development of early . . .
To clarify: I am not asking why an octave is called an octave (meaning eight) if we have 7 notes This is clear My question is about the chronology of a 12 semi-tone tuning system, the use of an 8-note scale (major scale), and the introduction of the word 'octave' to refer to those 8 notes (7 notes + root)
- When was the word octave first used? - theory
The first known usage of "octave" in English, according to the Oxford English Dictionary: The earliest known use of the word octave is in the late 1500s OED's earliest evidence for octave is from around 1570, in Art of Music [author not given] Regarding etymology: octave is a borrowing from Latin Etymons: Latin octava, octāva, octāvus
- Ottava markings - Should this 8va be 8vb?
8va is an abbreviation for "ottava" ("octave" in Italian) and is commonly used both for higher and lower octave shifts The key difference is the placement of the dashed line: aligned to the top for "octave higher" and aligned to the bottom for "octave lower" 8vb is also sometimes used to indicate an octave lower
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