Sound processing apparatus and method with fading effect
US5960092A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 3, 1997 |
| Grant date | Sep 28, 1999 |
| Priority date | — |
| Expiry date | Jan 3, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03G3/002
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A sound processing apparatus and method with fading effect is disclosed. The sound processing method includes: sequentially sending out pulse modulation signals; separating the pulse modulation signals into a first portion and a second portion, wherein the first portion and the second portion are respectively processed by a corresponding digital to analog (D/A) conversion via a first D/A converter and a second D/A converter; respectively inputting a first reference signal and a second reference signal to the first D/A converter and the second D/A converter, thus respectively obtaining an offset signal and a fading signal from the first D/A converter and the second D/A converter; and adding the offset signal and the fading signal into an output sound signal. The sound processing apparatus includes a first reference signal generator for generating two different reference signals; a switching element for selecting one of the two different reference signals as a first reference signal; an offset effect converter for receiving a first portion of a pulse code modulation signal and the first reference signal and outputting an offset signal; a second reference signal generator for generati…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.