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WikiCards · Card list · Science cards · Fast Fourier transform
Rare card · Science
Fast Fourier transform, a Rare card
A fast Fourier transform is an algorithm that computes the discrete Fourier transform, or its inverse, of a sequence.
- Rarity
- Rare
- Domain
- Science
- ATK
- 80
- DEF
- 70
- Power
- 150
- Wikipedia reads a year
- 300,000
Power 150 (ATK + DEF): stronger than 75 % of WikiCards cards.
Fast Fourier transform quiz: 3 questions
Three questions on the Fast Fourier transform card, the way WikiCards duels ask them. Pick an answer, the facts are just below.
Find the missing word
The DFT is obtained by decomposing a sequence of values into components of ______ frequencies.
Answer
different. The DFT is obtained by decomposing a sequence of values into components of different frequencies. From the Fast Fourier transform article on Wikipedia.
Which of these cards hits hardest (highest ATK)?
Answer
Morphine. Morphine 90 · Automation 86 · Fast Fourier transform 80 · Ohm's law 76 ATK in WikiCards.
In a duel, each round asks a question like these about the opposing card, with 15 seconds to answer.
The facts on the card
The card carries these facts from its Wikipedia article.
- A Fourier transform converts a signal from its original domain to a representation in the frequency domain and vice versa.
- The DFT is obtained by decomposing a sequence of values into components of different frequencies.
- This operation is useful in many fields, but computing it directly from the definition is often too slow to be practical.
Why it is Rare
Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Fast Fourier transform article was read about 300,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 80 and blocks with 70: each hit it takes is cut by 28 %.
How to get Fast Fourier transform
Open packs. Each pack holds five cards drawn from real Wikipedia articles, the rarest last, and the fifth card is always Rare or better. The odds are shown in the game. A free pack arrives every hour and two can wait, and the Coins you win in duels buy more packs.
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Credits
Text : Wikipedia, Fast Fourier transform (revision), CC BY-SA 4.0. Photo : Yangwenbo99, CC BY-SA 4.0, Wikimedia Commons.
