Method and device for controlling fir filter
US11871191B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 29, 2021 |
| Grant date | Jan 9, 2024 |
| Priority date | — |
| Expiry date | Apr 30, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H2017/0081
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A method for controlling an FIR filter that processes sound signals based on setting of a band filter includes receiving, from a user, an instruction for control data that indicate a gain parameter of an amplitude characteristic corresponding to a transfer function represented as a function of angular frequency, generating a first amplitude characteristic that is an amplitude characteristic of the band filter, as a basis of an amplitude characteristic of the FIR filter, in accordance with the control data, receiving an instruction for a gain limit value from the user, limiting a gain curve of the first amplitude characteristic so as to be within the gain limit value that has been instructed, thereby acquiring a second amplitude characteristic, and setting filter coefficients of the FIR filter based on the second amplitude characteristic.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.