Example image of eyePlorer eyePlorer map for 'Discrete cosine transform': Frequency Trigonometric functions Audio compression (data) Image compression Lossy compression Partial differential equation Spectral method Boundary value problem Signal (electronics) Discrete Fourier transform List of Fourier-related transforms Real number Even and odd functions Discrete sine transform Modified discrete cosine transform Advanced Audio Coding MP3 Vorbis Windows Media Audio Approximation theory Chebyshev polynomials Clenshaw–Curtis quadrature DV JPEG Motion JPEG Moving Picture Experts Group Theora Entropy encoding Quantization (signal processing) Amplitude Euler's formula Domain of a function Fourier series Periodic function Sine and cosine transforms MDCT Classification of discontinuities Rate of convergence Slope Function (mathematics) Linear Matrix (mathematics) Orthogonal matrix Linear combination Fast Fourier transform Power of two Cooley–Tukey FFT algorithm FFTW GNU General Public License K. R. Rao