Robert Boschgmbh

Chen Tchang

Marc Smaak

Aldo Van Dijk

Martien Kas

Kees Nuijten

Henk Goudsmits

Hatem Elayeb

C P Janse

L C A Van Stuivenberg

LCA Van Stuivenberg

CP Janse

Conference Systems are commonly used in meeting rooms or plenary halls to support the discussion of a plurality of participants. Such Conference Systems may comprise more than 50 or 100 microphone equipped delegate units, whereby each delegate unit can be assigned to a participant of the discussion. A delegate unitfor a Conference System is proposed, the delegate unit comprises a base body, a microphone stem bodycomprising a microphone headand a stem, whereby the microphone headis arranged on the stemand whereby the microphone stem bodyis arranged on the base body, whereby the microphone headhas a directional microphone characteristic.

Delegate unit and conference system with the delegate unit

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.

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

Conference audio systems are widely known and are usually used in political or economic debates, at fairs and wherever a plurality of people discuss with each other supported by a microphone-amplifier-loudspeaker system. In known systems each delegate of a conference has a seat with a working table in which the microphone and the loudspeaker is integrated. A conference audio system is proposed comprising a plurality of delegate units (), each delegate unit () having a delegate loud-speaker () and/or a delegate microphone (), a control means () for distributing at least one audio signal from at least one of the delegate microphones () or another sound source to a plurality of the delegate loudspeakers (), the plurality of delegate loud-speakers () generating a common audio atmosphere, delay means () operable to add a time delay on the audio signal, whereby the time delay is dependent from the distance between the position of the delegate microphone () or sound source, respectively, generating the audio signal and the individual delegate loudspeaker () position.

Conference audio system, process for distributing audio signals and computer program

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Bavel, Netherlands

Chen Tchang