Sound synthesizing apparatus and method, telephone apparatus, and program service medium
US6732075B1 · kind B1 · utility
16Cited by
7References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 20, 2000 |
| Grant date | May 4, 2004 |
| Priority date | — |
| Expiry date | Apr 20, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L21/038
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In a sound synthesizer, a noise adder generates a noise signal having a frequency band of 3,400 to 4,600 Hz, adjusts the gain of the noise signal, and adds the gain-adjusted noise signal to an excitation source after being filled with zeros by a zero-filling circuit, thereby providing a wide-band excitation source which is rather flat. The signal gain is adjusted by determining a narrow-band excitation source or a power of the wide-band excitation source after being filled with zeros and fitting the gain to the narrow-band excitation source or the power.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.