Delay unit for a conference audio system, method for delaying audio input signals, computer program and conference audio system

Abstract

A delay unit () for a conference audio system () adapted to delay audio input signals for an adjustable time delay, thereby generating audio output signals, is proposed. The delay unit () comprising a circular buffer (); a write pointer (W) to write a sample (S) of a first input signal to the circular buffer () at a first write position; a read pointer (R) to read a sample from the circular buffer () 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 d; 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 dby 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 d.