Digital filter for performing serial operations and vocal sound synthesizing apparatus having the digital filter
US4389539A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 10, 1981 |
| Grant date | Jun 21, 1983 |
| Priority date | — |
| Expiry date | Mar 10, 2001 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L19/00
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A single section digital filter is provided with a digital input signal and includes a serial multiplier having an input responsive to predetermine parameters. An adder/subtractor has an input serially connected to the multiplier output. A first switch serially selects recirculating data from an adder/subtractor output directly or delayed, or the digital input signal. A second input of the multiplier is serially provided with the selected data. A second switch serially and selectively connects delayed selected data to a second input of the adder/subtractor. A latch serially receives delayed data for effecting series/parallel conversion thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.