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Coefficient used in fast Fourier transform (FFT) algorithms
A twiddle factor, in fast Fourier transform (FFT) algorithms, is any of the trigonometric constant coefficients that are multiplied by the data in the
Twiddle_factor
Topics referred to by the same term
Look up twiddle in Wiktionary, the free dictionary. Twiddle or twiddling may refer to: Twiddle (band), an American rock band Twiddle factor, used in fast
Twiddle
Fast Fourier Transform algorithm
roots of unity (often called the twiddle factors). Perform N2 DFTs of size N1. Typically, either N1 or N2 is a small factor (not necessarily prime), called
Cooley–Tukey_FFT_algorithm
Discrete Fourier transform algorithm
prime-factor (Good–Thomas) algorithm (PFA), based on the Chinese remainder theorem, to factorize the DFT similarly to Cooley–Tukey but without the twiddle factors
Fast_Fourier_transform
Fast Fourier Transform algorithm
factors (not necessarily relatively prime), but it has the disadvantage that it also requires extra multiplications by roots of unity called twiddle factors
Prime-factor_FFT_algorithm
Computation process in mathematical algorithms
of the sub-transforms) pre-multiplied by roots of unity (known as twiddle factors). (This is the "decimation in time" case; one can also perform the
Butterfly_diagram
Medical condition
Twiddler's syndrome is a malfunction of a pacemaker due to manipulation of the device and the consequent dislodging of the leads from their intended location
Twiddler's_syndrome
Fast Fourier transform algorithm
_{N}^{k}} and ω N 3 k {\displaystyle \omega _{N}^{3k}} terms, known as twiddle factors. Here, we use the identities: ω N k + N / 4 = − i ω N k {\displaystyle
Split-radix_FFT_algorithm
Open standard for programming heterogenous computing systems, such as CPUs or GPUs
fftRadix16Pass(data); // in-place radix-16 pass twiddleFactorMul(data, tid, 64, 4); // twiddle factor multiplication localShuffle(data, sMemx, sMemy,
OpenCL
Lists of values of mathematical functions
(FFT) algorithms, where the same trigonometric function values (called twiddle factors) must be evaluated many times in a given transform, especially in the
Trigonometric_table
List of values of a mathematical function
(FFT) algorithms, where the same trigonometric function values (called twiddle factors) must be evaluated many times in a given transform, especially in the
Mathematical_table
permutation of vectors with 2m entries used in many FFTs. Butterfly diagram Twiddle factor — the trigonometric constant coefficients that are multiplied by the
List of numerical analysis topics
List_of_numerical_analysis_topics
High-performance algorithm
columns and rows of the matrix, with a correction multiplication by "twiddle factors" in between. The algorithm got its name after an article by David H
Bailey's_FFT_algorithm
Algorithmically modifying data below the word level
its inclusion cannot be justified, inspiring innovative research. Bit twiddling, bit fiddling, bit bashing, and bit gymnastics are often used interchangeably
Bit_manipulation
Algorithm to multiply two numbers
the complex multiplies are by constant coefficients c + di (called twiddle factors in FFTs), in which case two of the additions (d−c and c+d) can be precomputed
Multiplication_algorithm
Fast Fourier transform algorithm
Cooley–Tukey instead first computes x2(z ωN), shifting all the roots (by a twiddle factor) so that it can apply the recursive factorization of F 1 {\displaystyle
Bruun's_FFT_algorithm
Cardiac hormone which increases renal sodium excretion
Stryjewski PJ, Kuczaj A, Kulak Ł, Nowak J, Nessler B, Nessler J (2014-02-20). "Twiddler's syndrome: a rare complication of pacemaker implantation". Polskie Archiwum
Atrial_natriuretic_peptide
Multidimensional fast Fourier transform algorithm
decomposing the regular 2-D DFT into sums of smaller DFT's multiplied by "twiddle" factors. A decimation-in-time (DIT) algorithm means the decomposition is based
Vector-radix_FFT_algorithm
Digital processing technique
\exp \left(-j{\frac {2\pi }{N}}\right)} is commonly referred to as the twiddle factor of the DFT in the signal processing literature. The DFT equation can
Parallel multidimensional digital signal processing
Parallel_multidimensional_digital_signal_processing
choppers twiddle their rackets in order to switch which side of the racket has pips, adding another layer of confusion for their opponent. Notable twiddle-choppers
Table tennis grips and playing styles
Table_tennis_grips_and_playing_styles
English musician (born 1963)
October 2023. Retrieved 18 March 2025. Petridis, Alexis (21 June 2022). "'Twiddle a knob and make a face' – Norman Cook on his mental health DJ classes"
Fatboy_Slim
Malfunction of an artificial pacemaker
dislodgement is less common compared to atrial lead dislodgement. Causes Twiddler's Syndrome The patient's constant manipulation of the pulse generator within
Pacemaker_failure
British rock musician (1950–2018)
meticulous guitar player. The notes had to be exactly right. He didn't play any twiddly licks just to fill time. Danny's style, which he modelled after Pete Green's
Danny_Kirwan
English rock band (1962–1997)
amplifier [...] an Elpico" from a radio spares shop in Muswell Hill, and "twiddled around with it", including "taking the wires going to the speaker and putting
The_Kinks
2021 re-recorded album by Taylor Swift
wrote "Everything Has Changed". The production of "Run" is driven by a twiddling guitar and orchestral compositions, while its lyrics consist of romantic
Red_(Taylor's_Version)
Film by Ridley Scott
his first 3D film he found the process easy. He said, "You can literally twiddle a knob and the depth will increase," and "the trick is not to overdo it
Prometheus_(2012_film)
1969 musical by Sherman Edwards and Peter Stone
John." Adams is frustrated that the Congress does nothing but "Piddle, Twiddle, and Resolve" as he imagines a conversation with his wife Abigail, who
1776_(musical)
High-density disk drive recording technology
(December 3, 2020). "HGST releases helium-filled 10TB hard drive; Seagate twiddles shingled fingers". Ars Technica. Retrieved December 3, 2015. "Zoned Block
Shingled_magnetic_recording
2016 video game
conquest. Game director Brian Heins said they wanted to avoid the "moustache-twiddling" type of villainy in the game's concept, instead to allow the player to
Tyranny_(video_game)
Syndromes
syndrome Tumor lysis syndrome Tumor necrosis factor receptor associated periodic syndrome Turner syndrome Twiddler's syndrome Twin Anemia-Polycythemia Sequence
List_of_syndromes
Computer input device
Plaisted, D.; Starner, T. (2004-10-31). "Expert Chording Text Entry on the Twiddler One-Handed Keyboard". Eighth International Symposium on Wearable Computers
Chorded_keyboard
Exponent of a power of two
"Find the log base 2 of an N-bit integer in O(lg(N)) operations", Bit Twiddling Hacks, Stanford University, retrieved 2015-11-25 Feynman and the Connection
Binary_logarithm
Medical device for artificially stimulating heart contractions
of the pacer lead and symptoms. Another possible complication called twiddler's syndrome occurs when a patient manipulates the pacemaker and causes the
Pacemaker
American computer scientist
parts from a kit made by Park Enterprises, a Private Eye display, and a Twiddler chorded keyboard. As of January 29, 2008, Starner's setup has evolved to
Thad_Starner
Medical therapy for incontinence and constipation
manifest as leg pain. It is possible to develop a condition analogous to twiddler's syndrome if the implanted pulse generator is manipulated or rotated by
Sacral_nerve_stimulation
Annual festival in Chillicothe, Illinois
Filibusta Liquid Stranger Manic Focus Mija The Russ Liquid Test Sunsquabi Twiddle The Werks Tauk Ani DiFranco Lil Dicky The 17th annual Summer Camp Music
Summer_Camp_Music_Festival
Puzzle
2017-02-24. Hofstadter, D.R., Metamagical Themas, "The Magic Cube's cubies twiddled by cubists and solved by cubemeisters", Scientific American, March 1981
Rubik's family cubes of varying sizes
Rubik's_family_cubes_of_varying_sizes
English singer, comedian and actress (1870–1922)
to packed theatres throughout America. Her act featured the songs "The Twiddly Wink", "I'd Like to Live in Paris All the Time (The Coster Girl in Paris)"
Marie_Lloyd
Small computing device worn on the body
Enterprises, a Private Eye display on loan from Devon Sean McCullough, and the Twiddler chording keyboard made by Handykey. Many iterations later this system became
Wearable_computer
Framework in machine learning
experiences occur in early period of human life, for instance when infants twiddle toys in their hands. Because templates may be totally unrelated to images
M-theory_(learning_framework)
TWIDDLE FACTOR
TWIDDLE FACTOR
Surname or Lastname
English
English : variant of Beadle.Americanized spelling of German Bittel or its variant Büttel.
Surname or Lastname
English
English : possibly a variant of Trumble.Possibly a variant spelling of German Trindl, from a Bavarian and Swabian nickname for a slow person, or alternatively an altered spelling of Drindle, from a South German short form of the personal name Katharina (see Catherine).
Surname or Lastname
English (northern)
English (northern) : variant of Siddall.
Surname or Lastname
English
English : unexplained. In part, it may be a variant of Tweedy, but the concentration of the modern surname in Norfolk suggests another source is also involved.
Girl/Female
Indian, Punjabi, Sikh
Twinkle; Shimmer
Biblical
middle
Surname or Lastname
English (northeastern)
English (northeastern) : variant spelling of Tindall.
Boy/Male
Indian
Middle
Girl/Female
Celebrity, Gujarati, Hindu, Indian
Sparkle; Gleam of Eyes; Brilliant
Girl/Female
Hindu, Indian
Twinkle
Surname or Lastname
English
English : variant spelling Swindell.Perhaps an Americanized spelling of German Schwind(e)l, a nickname from a diminutive of Middle High German swinde ‘wild’, ‘impetuous’.
Surname or Lastname
English
English : from an Old English personal name, Cridela.
Girl/Female
Indian, Traditional
Twinkle; Shiny
Surname or Lastname
English (Lancashire and Yorkshire)
English (Lancashire and Yorkshire) : habitational name from Windhill in West Yorkshire or Windle in Lancashire, both named from Old English wind ‘wind’ + hyll ‘hill’, i.e. a mound exposed to fierce gusts. There is a Windhill in Kent (with the same etymology), but this does not appear to have contributed significantly to the modern surname.
Girl/Female
African, Australian, Latin
Middle
Girl/Female
Hindu
Shining
Surname or Lastname
English (Somerset)
English (Somerset) : possibly from the Welsh patronymic ap Ridel ‘son of Ridel’.
Girl/Female
Biblical
Middle.
Surname or Lastname
English
English : unexplained. Compare Aduddell.Perhaps an Americanized spelling of German Dittel, from a pet form of a personal name formed with Diet (Germanic theud ‘people’, ‘race’), for example Dietrich.
Girl/Female
Gujarati, Indian
Brightness
TWIDDLE FACTOR
TWIDDLE FACTOR
Girl/Female
Arabic, Danish, Indian, Malayalam, Muslim
Golden One
Boy/Male
Bengali, Hindu, Indian
Good Knowledge; Spiritual Intelligence
Girl/Female
Muslim
Prosperous
Girl/Female
Tamil
Variant of Sanskrit word Geet meaning song
Girl/Female
Muslim
Sky
Boy/Male
Tamil
The Sun
Boy/Male
Australian, Portuguese
God is Gracious
Girl/Female
Indian
Sea
Boy/Male
Indian, Punjabi, Sikh
Loving Son
Boy/Male
Arabic, Gujarati, Indian, Muslim, Parsi, Pashtun, Sindhi, Tamil
Fortunate; The Second Mughal Emperor; Blessed; Auspicious; Sacred; Royal; Imperial
TWIDDLE FACTOR
TWIDDLE FACTOR
TWIDDLE FACTOR
TWIDDLE FACTOR
TWIDDLE FACTOR
v. t.
To bind as with a bandage; to bind or warp tightly with clothes; to swathe; -- used esp. of infants; as, to swaddle a baby.
n.
A pimple.
v. t.
To cheat defraud grossly, or with deliberate artifice; as, to swindle a man out of his property.
n.
Silly talk; gabble; fustian.
v. t.
To touch lightly, or play with; to tweedle; to twirl; as, to twiddle one's thumbs; to twiddle a watch key.
v. i. & t.
To talk in a weak and silly manner, like one whose faculties are decayed; to prate; to prattle.
v. t.
To separate, as grain from the chaff, with a riddle; to pass through a riddle; as, riddle wheat; to riddle coal or gravel.
v. t.
To use with tenderness; to fondle.
a.
Equally distant from the extreme either of a number of things or of one thing; mean; medial; as, the middle house in a row; a middle rank or station in life; flowers of middle summer; men of middle age.
n.
A slight twist with the fingers.
v. t.
To perforate so as to make like a riddle; to make many holes in; as, a house riddled with shot.
n.
Idle trifling; twaddle.
v. i.
To play on a fiddle.
n.
A kind of dock (Rumex pulcher) with fiddle-shaped leaves; -- called also fiddle dock.
n.
Anything used to swaddle with, as a cloth or band; a swaddling band.
a.
Being about the middle of the ordinary age of man; between 30 and 50 years old.
v. i.
To walk with short steps, swaying the body from one side to the other, like a duck or very fat person; to move clumsily and totteringly along; to toddle; to stumble; as, a child waddles when he begins to walk; a goose waddles.
v. i.
To play with anything; hence, to be busy about trifles.
v. t.
To play (a tune) on a fiddle.