Phase control signal generation device, phase control signal generation method, and phase control signal generation program
US10362396B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 16, 2016 |
| Grant date | Jul 23, 2019 |
| Priority date | — |
| Expiry date | Feb 16, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04S2420/07
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A phase control signal generation device generating a phase control signal for each of frequency bands for an audio signal converted into a frequency domain, the phase control signal generation device comprising: a setting change means that is able to change setting of a propagation delay time for each of predetermined frequency bands; a difference obtaining means that obtains a difference between propagation delay times before and after setting change; an updating means that updates a phase control amount of the frequency band for which the propagation delay time is changed, based on the obtained difference; and a phase control signal generating means that generates a phase control signal of each frequency band by performing a smoothing process for the phase control amount in a frequency domain using the updated phase control amount.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.