Delay unit for a conference audio system, method for delaying audio input signals, computer program and conference audio system
US9271096B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 3, 2009 |
| Grant date | Feb 23, 2016 |
| Priority date | — |
| Expiry date | Dec 19, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04S2420/05
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A delay unit (16) for a conference audio system (1) adapted to delay audio input signals for an adjustable time delay, thereby generating audio output signals, is proposed. The delay unit (16) comprising a circular buffer (17); a write pointer (W) to write a sample (S1) of a first input signal to the circular buffer (17) at a first write position; a read pointer (R) to read a sample from the circular buffer (17) at a first read position as a sample of a first output signal, whereby the distance between the first write position and the first read position determines a first time delay dold; a buffer control module adapted to move the write pointer W to a next position after writing and to move the read pointer (R) to a next position after reading; characterized in that the buffer control module is adapted to adjust a second time delay dnew by moving the write pointer (W) to a second write position, whereby the distance between the first read position and the second write position determines the second time delay dnew.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.