For enhancing our existing conference systems product of embedded chairman/delegate units, a low cost embedded chairman/delegate units design is proposed in this paper, which is capable of digital audio processing for digital conference system. In addition, the functionality of an automatic gain control (AGC), a dynamic range compression (DRC), and a 2.5W embedded class-D speaker amplifier is also supported in this design.
A GUI-based mobile control console for digital conference system, is introduced in this paper. Most mobile control consoles of digital conference systems require additional hardware implementation. However, this work uses an existing smart phone (iphone) without any additional hardware, which means the proposed mobile control console implemented in apple's iphone with application software written on the iOS SDK platform. Therefore, this work aims to propose a convenient approach without the cost of additional hardware to achieve wireless remote control to a graphical control software platform for our developed digital conference systems.
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