Speech enhancement device, speech enhancement method, and non-transitory computer-readable medium
US10997983B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 8, 2016 |
| Grant date | May 4, 2021 |
| Priority date | — |
| Expiry date | Jan 14, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04S2420/07
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A speech enhancement device includes: a filter to extract, from an input signal, a component in a frequency band including a fundamental frequency of speech, as a first filter signal; a filter to extract, from the input signal, a component in a frequency band including a first formant of speech, as a second filter signal; a filter to extract, from the input signal, a component in a frequency band including a second formant of speech, as a third filter signal; a mixer to mix the first and second filter signals, thereby outputting a first mixed signal; a mixer to mix the first and third filter signals, thereby outputting a second mixed signal; a controller to delay the first mixed signal, thereby generating a first speech signal for a first ear; and a controller to delay the second mixed signal thereby generating a second speech signal for a second ear.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.