Optimization method for implementation of mel-frequency cepstral coefficients
US11804238B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 29, 2021 |
| Grant date | Oct 31, 2023 |
| Priority date | — |
| Expiry date | Jun 16, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L25/24
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An optimization method for an implementation of mel-frequency cepstral coefficients is provided. The optimization method includes the following steps: performing a framing step, including using a 400×16 static random access memory to temporarily store a plurality of sampling points of a sound signal with overlap, and decomposing the sound signal into a plurality of frames. Each of the plurality of frames is 400 of the sampling points, there is an overlapping region between adjacent two of the plurality of frames, and the overlapping region includes 240 of the sampling points. The optimization method further includes performing a windowing step, which includes multiplying each of the plurality of frames by a window function in a bit-level design, and the optimization method includes performing a fast Fourier transform (FFT) step, which includes applying a 512 point FFT on a frame signal to obtain a corresponding frequency spectrum.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.