DELAY UNIT FOR A CONFERENCE AUDIO SYSTEM, METHOD FOR DELAYING AUDIO INPUT SIGNALS, COMPUTER PROGRAM AND CONFERENCE AUDIO SYSTEM

摘要

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 controlmodule adapted to move the write pointer Wto a next position after writingand to move theread pointer (R) to a next position after reading; characterized in that the buffer control moduleis adapted to adjust a second time delay dnew by movingthe writepointer (W) to a second write position, whereby the distance between the firstread position and the second write position determines the second timedelay dnew.