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Topic: Pseudo octave

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	Pseudo-octave (Site not responding. Last check: 2007-09-17)
		One example being the stretched octave: 2.1:1, which sounds out of tune played with harmonic tones, but sounds strange but in tune when played with tones whose harmonics are stretched equivalently, while the 2:1 octave then sounds out of tune.
		The octaves of Bali nese gamelan s are never tuned 2:1, but instead are stretched or compressed in a consistent manner throughout the range of each individual gamelan.
		Octave Home Page GNU Octave is freely redistributable software that provides a command line interface for solving linear and nonlinear problems numerically.
	www.serebella.com /encyclopedia/article-Pseudo-octave.html (426 words)

	Pseudo-octave - Wikipedia, the free encyclopedia
		A pseudo-octave is an interval whose frequency ratio is not 2:1, the definition of an octave, but is treated in some way or ways equivalent to this ratio.
		One example being the stretched octave: 2.1:1, which sounds out of tune played with harmonic overtones, but sounds strange but in tune when played with tones whose overtones are stretched equivalently, while the 2:1 octave then sounds out of tune.
		The octaves of Balinese gamelans are never tuned 2:1, but instead are stretched or compressed in a consistent manner throughout the range of each individual gamelan.
	en.wikipedia.org /wiki/Pseudo-octave (129 words)

	Search Encyclopedia.com
		octave octaveŏk´tĬv [Lat.,=eighth], in music, the perfect interval between the 1st and 8th tones of the diatonic scale.
		The upper note of a perfect octave has a frequency of vibration twice that of the lower, and in modern Western notation the two have the same letter name.
		Cr?zie, (Joseph) Octave Crémazie, (Joseph) Octavezhôzĕf´ ôktäv´ krāmäzē´, 1822-79, French Canadian poet, b.
	www.encyclopedia.com /searchpool.asp?target=Pseudo-octave (472 words)

	Octave -- Facts, Info, and Encyclopedia article (Site not responding. Last check: 2007-09-17)
		Octave equivalency is a part of most musics, but is far from universal in "primitive" and (Click link for more info and facts about early music) early music (e.g., Nettl, 1956; Sachs & Kunst, 1962).
		In the (A 12-note scale including all the semitones of the octave) chromatic scale, this is 13 notes counting both ends, although traditionally, one speaks of 12 notes of the chromatic scale, not counting both ends.
		The notation 8va is sometimes seen in (A musical composition in printed or written form) sheet music, meaning "play this an octave higher than written." 8va stands for ottava, the (A native or inhabitant of Italy) Italian word for octave.
	www.absoluteastronomy.com /encyclopedia/o/oc/octave.htm (652 words)

	Equal temperament - Wikipedia, the free encyclopedia
		Equal temperament is a scheme of musical tuning in which the octave is divided into a series of equal steps (equal frequency ratios).
		Some claim that this is especially troubling in the lower register, and had somewhat constrained composers in the classical and romantic eras from writing chords narrower than octave for the left hand in keyboard music, while such examples in cello parts of string quartets are more common.
		Others hear the dissonance as most troubling in the higher register, where beating between harmonics of mistuned consonances is faster, and where combinational tones, often an entire semitone out-of-tune in equal temperament, are louder.
	en.wikipedia.org /wiki/Equal_temperament (1760 words)

	pseudo
		Pseudos analyze thousands of words of text of a forum member's postings, and generate randomly new posts from that data that are supposed to resemble a satire on the forum participant's style.
		Pseudos have been used in the past to post flames and fool forum participants into thinking one of their own has adopted an additional screenname and used it to flame.
		Comparisons to pseudos are invoked as a colossal insult to tell a user that his rantings resemble not his own posts, but a parody of his posts.
	www.fact-library.com /pseudo.html (198 words)

	Encyclopedia: List of musical topics
		Octave â“ Octave illusion â“ Opera â“ Operetta â“ Oratorio â“ Orchestra â“ Orchestrationâ“ Organ â“ Organology â“ Ornament â“ Ostinato â“ Overtone In music, an octave (sometimes abbreviated 8ve or 8va) is the interval between one musical note and another with half or double the frequency.
		Discovered by Diana Deutsch in 1973, the octave illusion is an auditory illusion produced by simultaneously playing two sequences of two notes, high to low, and low to high, in separate stereo channels over headphones.
		When the twelve notes within the octave are tuned using meantone temperament, one of the fifths will be much sharper than the rest.
	www.nationmaster.com /encyclopedia/List-of-musical-topics (8828 words)

	Recorder Fingering Systems (Site not responding. Last check: 2007-09-17)
		The downside of historical fingering is that the fingering for the fourth scale degree in the second octave is more cumbersome, requiring a half hole by the right ring finger on the sixth tone hole.
		It also raised the pitch of the raised fifth scale degree in the second octave, correcting the flatness that is often unavoidable with historical baroque fingering.
		What they were attempting to do, quite simply, was to redesign the recorder so that its fingering for the fourth scale degree in both octaves was identical to that of modern woodwind instruments such as the flute, clarinet, and saxophone.
	www.aswltd.com /finger.htm (1448 words)

	gnu octave
		Octave is a free computer program for performing numerical computations, which is mostly compatible with MATLAB.
		It was the name of a former professor of one of the authors of Octave who was known for his ability to quickly come up with good approximations to numerical problems.
		Because Octave is made available under the GNU General Public License, it can be freely copied and used.
	www.fact-library.com /gnu_octave.html (153 words)

	phpMan: speaker(4) (Site not responding. Last check: 2007-09-17)
		There are 84 accessible notes numbered 1-84 in 7 octaves, each running from C to B, numbered 0-6; the scale is equal-tempered A440 and octave 3 starts with middle C. By default, the play function emits half-second notes with the last 1/16th second being `rest time'.
		When octave-tracking is on, interpretation of a pair of letter notes will change octaves if necessary in order to make the smallest possible jump between notes.
		Octave locking is disabled for one letter note following >, < and O[0123456].
	www.ournet.md /~freebsd/divers/man.php/man/speaker/4 (985 words)

	Equal temperament
		A South American Indian scale from a preinstrumental culture measured by Boiles (1969) featured 175 cent equal temperament which stretches the octave slightly as with instrumental gamelan music.
		The quarter tone scale or 24-tET is, similarly, based on powers of.
		Other equal divisions of the octave, though, can be better considered temperaments.
	pedia.newsfilter.co.uk /wikipedia/e/eq/equal_temperament.html (1315 words)

	RollingStone.com: Octave : The Moody Blues : Review
		The Moody Blues' reunion album faithfully recreates a signature sound almost certain to be regarded as tomorrow's camp: simple rock and folk tunes blown up into a pseudo-classical, quasi-religious choral music, driven by plodding, militaristic rhythm tracks and mixed into a turgid murk that blurs the distinction between rock and orchestral instrumentation.
		While Octave claims two passable songs–"Had to Fall in Love" and "Driftwood," both by Justin Hayward–neither approaches the memorability of "Nights in White Satin" and "Question," the only instances in which the Moody Blues have created tunes to match the grandiosity of their aural style.
		Octave is another cathedral of twigs built on a mud slide.
	www.rollingstone.com /reviews/album/_/id/258279/themoodyblues?pageid=rs.ArtistDiscography&pageregion=triple1 (211 words)

	[No title] (Site not responding. Last check: 2007-09-17)
		From bug-octave-request at octave dot org Mon May 3 09:57:14 2004 Subject: Re: bug in 2.1.57 From: David Bateman
		It only reduces to a pseudo inverse since b is a vector.
		Octave's home on the web: http://www.octave.org How to fund new projects: http://www.octave.org/funding.html Subscription information: http://www.octave.org/archive.html -------------------------------------------------------------
	www.octave.org /mailing-lists/bug-octave/2004/321 (200 words)

	guitargeek \| Arion MOC-1 Octave
		Plastic construction and cheap connectors aside, the Arion is not a bad little octave pedal.
		Both the Octave, and Sub-Octave, slip around the original note with enough chaos to make this pedal a great noisemaker.
		It’s somewhat comforting to know that the results, as random as they are, are actually dependable.
	www.guitargeek.com /gearview/93 (151 words)

	Generating Procedural Clouds in real time on 3D HW - Intel® Software Network (Site not responding. Last check: 2007-09-17)
		By representing the four octaves as four textures of different resolutions (say 32x32 through 256x256) which eventually will all be upsampled to the same size (by mapping them to textures of larger sizes), I can achieve the desired result automatically.
		As we are periodically updating each octave of noise (as opposed to recreating it per frame), we need to interpolate between updates to come up with a texture representing the noise at the current time.
		As I was using a series of frequencies that are multiples of two, I chose to make their contributions multiples of two, such that each octave's contribution was half that of the next lowest frequency.
	www.intel.com /cd/ids/developer/asmo-na/eng/segments/20534.htm?page=5 (887 words)

	John Greschak - Lines in the Air: A One-Act Play: Page 9
		An octave is circular, in that you name pitches as O1 through Z1, O2 through Z2, and so on.
		Primus:...Well...according to The New Harvard Dictionary of Music, an octave is "an interval bounded by two pitches with the same pitch names and the higher of whose frequencies is twice the lower".
		Primus:......I've dropped the second half of this definition...For my purposes, an octave is an interval bounded by two consecutive pitches of the same pitch class......If the ratio between consecutive pitches of the same pitch class is exactly two, I would call that a normal...
	www.greschak.com /plays/lita/lita9.htm (11454 words)

	Bohlen-Pierce scale - InformationBlast
		Despite being a harmonic scale, instead of an octave, a ratio of 2:1, the scale uses the "tritave", 3:1.
		One then usually divides this tritave into 13 equal tempered intervals, instead of the usual twelve.
		In traditional terms it is the interval of an octave and a fifth.
	www.informationblast.com /Tritave.html (282 words)

	GameDev.net - Simple Clouds Part 1
		The first octave is a blowup of a single 3232 noise map to a 256256 map.
		The second octave is a blowup of four 3232 maps to four 128128 maps which are tiled together.
		The octaves are added together with the proper weight factors.
	www.gamedev.net /reference/articles/article2085.asp (1057 words)

	Relating Tuning and Timbre
		Alternatively, given a desired scale (perhaps one which divides the octave into n equal pieces, or one which is not based on the octave), there are timbres which will generate a dissonance curve with local minima at precisely the scale degrees.
		Real octaves sound dissonant and unresolved when A is different from 2 while the pseudo octaves are highly consonant.
		One implication is that the musical notion of consonance of intervals such as the octave and fifth can be viewed as a result of the timbre of the instruments we typically use.
	eceserv0.ece.wisc.edu /~sethares/consemi.html (4740 words)

	TTSS CD-ROM contents
		The spectrum of a sound is constructed so that the octave between f and 2f is dissonant while the nonoctave f to 2.1f is consonant.
		The sounds in October 21st are constructed so that the octave between f and 2f is dissonant, while the nonoctave between f and 2.1f is consonant.
		When there are ten equal tones in each octave, special tone colors are needed to align the partials into consonant patterns..
	eceserv0.ece.wisc.edu /~sethares/html/soundexamples.html (3833 words)

	SudeepAudio.com : Studio, Replication, Music Softwares, Indian musicians, Meditation, Audio Consultants
		Musicians know about octave, like a five octave or a seven octave keyboard (more octaves more keys and hence more price),eg piano and professional keyboards have seven octaves.
		An octave is the pitch interval between two sounds if one sound is double the frequency of other.
		The more dB per octave the steeper is the roll-off, or slope, of the filter.
	www.sudeepaudio.com /articles/guide2.htm (1206 words)

	4Reference \|\| Equal temperament (Site not responding. Last check: 2007-09-17)
		More generally, every step in n tone equal temperament is 1200/n cents.
		The equal tempered version of the Bohlen-Pierce scale consists of the ratio 3:1, 1902 cents, conventionally an octave and a just fifth, used as a tritave, and split into a thirteen tone equal temperament where each step is
		This provides a very close match to just intuned intervals consisting only of odd numbers.
	www.4reference.net /encyclopedias/wikipedia/Equal_temperament.html (616 words)

	XENTONALITY
		One feature of this scale is that it does not repeat at the octave - instead, it has 14 equal steps in a stretched "pseudo-octave" of 1232 cents.
		There are no real octaves (defined as a frequency ratio of 2 to 1) anywhere in this piece.
		Since the structure of the timbres are matched to the structure of the scale, these nonoctave intervals can be consonant, even as the (real) octave is dissonant.
	eceserv0.ece.wisc.edu /~sethares/xentone.html (1106 words)

	[No title] (Site not responding. Last check: 2007-09-17)
		Octaves are powers of two,a nd the infrasonic frequencies used in music as rhythmic elements are also powers of 2 or of 1/2--whole, half, quarter, eighth, sixteenth, thirty-second, and sixty-fourth notes, so there.
		Some electronic organs had similar divider circuits which were fed a note in the top octave of the organ and stepped it down octave by octave all the way to the contrabass.
		That is, such common intervals as the fourth and fifth and major and minor thirds and sixths depend for the consonance and their definition upon the presence and relative amounts of harmonic overtones in the sound of the instruments playing them.
	sonic-arts.org /darreg/XHB11.HTM (14507 words)

	tunes: this is not for realsies
		This is far enough off from the 1200 cent pure octave as to appear to be unusable as a consonance.
		Yet it passes as an octave because the natural/pure octave is not intrinsically wired into your brain; only its approximate size is learned through extensive exposure.
		I submit this tune as proof that the 2:1 ratio is irrelevant to the brain's recognition of the octave-class interval.
	www.nonoctave.com /tunes/TNFR.html (2566 words)

	Wave Digital Systems (Site not responding. Last check: 2007-09-17)
		Its 'Texture' and 'Mode' switches will take your sound from the vintage scream of a Tycho Brahe Octavia(®) to a clear, sweet, singing octave that Kathleen Battle would envy, while the 'Max' control lets you blend in your original note as clean or crunchy as the fans demand.
		The range of gain to dynamic response ally to make the Helium the most versatile and pivotal "octave up" pedal to date.
		The controls on Chaos react acutely with those on your instrument, and respond to your knowing touch to create rich flavors of ring modulation, filter sweeps, octave and higher-overtones, synth-like timbres--animating and elevating sounds--that no amp, pedal, processor or plugin, this side of paradise, can produce.
	www.wavedigital.com /heliumchaos.htm (340 words)

	Tritave (Site not responding. Last check: 2007-09-17)
		Pierce, who, with Max V. Mathews and others, published his discovery in 1984, renamed the scale the Bohlen-Pierce scaleafter discovering Bohlen's earlier publication.
		Despite being a harmonic scale, instead of an octave, a ratio of 2:1, the scale uses the " tritave ", 3:1.
		One thenusually divides this tritave into 13 equal tempered intervals,instead of the usual twelve.
	www.therfcc.org /tritave-174072.html (284 words)

	Spectrum Analyzer and Equalizer Designs
		Besides its obvious uses--for adjusting octave or one-third octave room equalizers--a spectrum analyzer can also be used to check the response of a tape recorder, or even help identify the rumble frequencies in an air conditioner.
		per octave, since this is the minimum amount of attenuation obtainable with a single resistor and capacitor.
		The National Semiconductor Audio/Radio Handbook recommends a Q of 1.7 for an octave equalizer described in its pages, though the Q must of course be higher for a third-octave unit.
	www.ethanwiner.com /spectrum.html (4621 words)

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