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The Discrete Fourier Transform (DFT) is a mapping between a finite set of discrete points in a (primal) domain (time, space) and the dual frequency domain. DFT requires an input sequence which is discrete, such as a sampling from an analogue audio signal.

1 vote
1 answer
126 views

Sinc Based Multi Dimension Signal Resampling on the Fourier Spectrum (DFT)

The Proper Way to Do Sinc Upsampling (DFT Upsampling) for Uniformly Sampled Discrete Signals with Finite Number of Samples. … Applying 2D Sinc Interpolation for Upsampling in the Fourier Domain (DFT / FFT). Applying 2D Sinc Interpolation for Downsampling in the Fourier Domain (DFT / FFT). …
Eric Johnson's user avatar
0 votes
1 answer
425 views

Applying 2D Sinc Interpolation for Downsampling in the Fourier Domain (DFT / FFT)

Related to The Proper Way to Do Sinc Downsampling (DFT Downsampling) for Uniformly Sampled Discrete Signals with Finite Number of Samples, how can one apply Sinc downsampling in the DFT / FFT domain for … This the downsampling case of in Applying 2D Sinc Interpolation for Upsampling in the Fourier Domain (DFT / FFT) as requested in comments. …
Eric Johnson's user avatar
0 votes
1 answer
640 views

Applying 2D Sinc Interpolation for Upsampling in the Fourier Domain (DFT / FFT)

Related to The Proper Way to Do Sinc Upsampling (DFT Upsampling) for Uniformly Sampled Discrete Signals with Finite Number of Samples, how can one apply Sinc upsampling in the DFT / FFT domain for a 2D …
Eric Johnson's user avatar