discrete

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• However, complex-data FFTs are so closely related to algorithms for related problems such as real-data FFTs, discrete cosine transforms, discrete Hartley transforms, and so on, that any improvement in one of these would immediately lead to improvements in the others (Duhamel & Vetterli, 1990).[

  المصدر:en.wikipedia.org

• A small python app to embed "secret" user data into a carrier image by manipulation of the Discrete Cosine Transform (DCT) AC coefficients

  المصدر:github.com

• It was once believed that real-input DFTs could be more efficiently computed by means of the discrete Hartley transform (DHT), but it was subsequently argued that a specialized real-input DFT algorithm (FFT) can typically be found that requires fewer operations than the corresponding DHT algorithm (FHT) for the same number of inputs.[

  المصدر:en.wikipedia.org

• There are further FFT specializations for the cases of real data that have even/odd symmetry, in which case one can gain another factor of roughly two in time and memory and the DFT becomes the discrete cosine/sine transform(s) (DCT/DST).

  المصدر:en.wikipedia.org

• Besides, we want to use existing AWS services/integrations on discrete function level (monitoring execution time/resources used, counting number of emails sent, logging, defining policies for email/translation separately for security reasons etc

  المصدر:medium.com