октава (внесистемная единица частотного интервала)
имя существительное 1) [музыка] а) октава Например: augmented octave — увеличенная октава diminished octave — уменьшенная октава perfect octave — чистая октава б) последовательность клавиш музыкальных инструментов, соответствующая октавному интервалу 2) [литературоведение] восьмистишие, октава 3) а) восьмой день после церковного праздника б) неделя, следующая за церковным праздником 4) восьмёрка, восемь предметов Например: this remarkable octave of players — эта замечательная восьмёрка игроков 5) восьмая позиция (в фехтовании) 6) винная бочка (ёмкостью около 61 л)
noun Etymology: Middle English, from Anglo-French, from Medieval Latin octava, from Latin, feminine of octavus eighth, from octo eight — more at eight 1. an 8-day period of observances beginning with a festival day 2. a. a stanza of eight lines; ottava rima b. the first eight lines of an Italian sonnet 3. a. a musical interval embracing eight diatonic degrees b. a tone or note at this interval c. the harmonic combination of two tones an octave apart d. the whole series of notes, tones, or digitals comprised within this interval and forming the unit of the modern scale e. an organ stop giving tones an octave above those corresponding to the digitals 4. the interval between two frequencies (as in an electromagnetic spectrum) having a ratio of 2 to 1 5. a group of eight
A high-level interactive language by John W. Eaton, with help from many others, like MATLAB, primarily intended for numerical computations. Octave provides a convenient command line interface for solving linear and nonlinear problems numerically. Octave can do arithmetic for real and complex scalars and matrices, solve sets of nonlinear algebraic equations, integrate functions over finite and infinite intervals, and integrate systems of ordinary differential and differential-algebraic equations. Octave is distributed under the GNU General Public License. It requires gnuplot, a C++ compiler and Fortran compiler or f2c translator.