Speech speed conversion factor determining device, speech speed conversion device, program, and storage medium
US9129609B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 27, 2012 |
| Grant date | Sep 8, 2015 |
| Priority date | — |
| Expiry date | Sep 17, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L2025/906
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A speech speed conversion factor determining device has a physical index calculation unit including a sound/silence judgment unit that distinguishes between sound and silent intervals of an input signal, a fundamental frequency calculation unit that calculates a fundamental frequency of the signal in the sound intervals and determines stable and unstable intervals, a frequency smoothing unit that smoothes the fundamental frequency in the stable intervals, a pseudo fundamental frequency calculation unit that calculates, for the intervals, a pseudo fundamental frequency by interpolation , and a fundamental frequency general shape connection unit that connects the smoothed and pseudo frequencies to obtain sampled values of a general shape of the frequency, such that the sampled values are output as an index, based on which conversion factor are calculated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.