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  2. Syntonic comma - Wikipedia

    en.wikipedia.org/wiki/Syntonic_comma

    [1] 3-limit 9:8 major tone 5-limit 10:9 minor tone. In music theory, the syntonic comma, also known as the chromatic diesis, the Didymean comma, the Ptolemaic comma, or the diatonic comma [2] is a small comma type interval between two musical notes, equal to the frequency ratio ⁠ 81 / 80 ⁠ (= 1.0125) (around 21.51 cents).

  3. YouTube Premium - Wikipedia

    en.wikipedia.org/wiki/YouTube_Premium

    Alongside Music Key, Google also introduced tighter integration between Play Music and YouTube's apps, including the sharing of music recommendations, and access to YouTube's music videos from within the Play Music app. [8] [9] Music Key was not YouTube's first foray into premium content, having launched film rentals in 2010, [15] and premium ...

  4. Comma (music) - Wikipedia

    en.wikipedia.org/wiki/Comma_(music)

    Syntonic comma on C Pythagorean comma on C . In music theory, a comma is a very small interval, the difference resulting from tuning one note two different ways. [1] Traditionally, there are two most common comma; the syntonic comma, "the difference between a just major 3rd and four just perfect 5ths less two octaves", and the Pythagorean comma, "the difference between twelve 5ths and seven ...

  5. Pythagorean comma - Wikipedia

    en.wikipedia.org/wiki/Pythagorean_comma

    The first to mention the comma's proportion of 531441:524288 was Euclid, who takes as a basis the whole tone of Pythagorean tuning with the ratio of 9:8, the octave with the ratio of 2:1, and a number A = 262144. He concludes that raising this number by six whole tones yields a value, G, that is larger than that yielded by raising it by an ...

  6. Brain Age: Concentration Training - Wikipedia

    en.wikipedia.org/wiki/Brain_Age:_Concentration...

    The game also added Relaxation Mode which allows the player's brain to take a break after training. They include 3 games: Blob Blast and Germ Buster (inspired by Wario's Woods and Dr. Mario respectively), and Music Appreciation, which lets players listen to relaxing music and the rest of the game's soundtrack. [4]

  7. Global Communication - Wikipedia

    en.wikipedia.org/wiki/Global_Communication

    Global Communication is an electronic music duo consisting of Tom Middleton and Mark Pritchard; the duo have also recorded under other aliases, including Reload and Jedi Knights. [1] They founded the labels Evolution Records and Universal Language Productions.

  8. Perceptual Objective Listening Quality Analysis - Wikipedia

    en.wikipedia.org/wiki/Perceptual_Objective...

    Further improvements target the handling of time called signals and signals with many delay variations. Similarly to P.862, POLQA supports measurements in the common telephony band (300–3400 Hz), but in addition it has a second operational mode for assessing HD-Voice in wideband and super-wideband speech signals (50–14000 Hz).

  9. Musica universalis - Wikipedia

    en.wikipedia.org/wiki/Musica_universalis

    Musica universalis—which had existed as a metaphysical concept since the time of the Greeks—was often taught in quadrivium, [8] and this intriguing connection between music and astronomy stimulated the imagination of Johannes Kepler as he devoted much of his time after publishing the Mysterium Cosmographicum (Mystery of the Cosmos), looking over tables and trying to fit the data to what he ...