Fast modified discrete cosine transform method
US7203717B1 · kind B1 · utility
4Cited by
9References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 30, 1999 |
| Grant date | Apr 10, 2007 |
| Priority date | — |
| Expiry date | Oct 30, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F17/142
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A technique for computationally efficient evaluation of the Modified Discrete Cosine Transform (MDCT) using the Fast Fourier Transform (FFT) method is presented in which the input of the FFT block consists of a sequence of N complex numbers, and this complex data is evaluated using an N/2-Point FFT only, thereby descreasing computation burden almost by two.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.