We recently demonstrated our expertise in this field within one of the modern residential and commercial complexes in Belgrade.
We equipped the company’s conference rooms with the most modern multimedia equipment for organizing conferences, meetings, and other corporate events, as well as events involving professional film crews and rental companies.
The installed equipment includes audio and video systems, video conferencing systems, digital signage systems, presentation lecterns, computer workstations for operators, racks with distribution and control equipment, as well as built-in boxes for connecting additional equipment and all accompanying accessories. All delivered and installed equipment, of professional quality and reliability, is designed for 24/7 operation.
The multimedia audio-video system in the conference rooms is composed of:
• System for transmission, display, and processing of video signals,
• System for transmission and processing of audio signals,
• Lighting system in the conference room,
• Control system,
• Power distribution system for the audio-video system, and
• Broadcast equipment.
The central unit for the distribution of audio, video, and control signals consists of a modular matrix with 64 video inputs and outputs. It features audio cards for routing audio signals, an integrated control processor, and redundant power supply, ensuring top-notch performance and reliability. HDBT transmitters and receivers with HDMI and USB2.0 interfaces are designed for transmitting 4K60/4:4:4 video signals over S/FTP Cat6a network cables, while device control is managed via an isolated network and LAN port.
The presentation system consists of an LED screen and professional Sony 55" 4K resolution display with a brightness of 620 cd/m². The Unilumin LED screen (600 x 168.75 cm) is mounted on the wall in the central area, while two smaller LED screens (300 x 168.75 cm) are mounted to its left and right. Signal distribution from the audio-video matrix to the LED screens is done via 3 HDMI video wall processors and corresponding control LED sending cards with redundant connections for maximum security. Each video wall processor supports 4K60/4:4:4 resolution content and multiple video windows on the LED screen. The display of content on the screens dynamically changes according to the room's mode of operation, providing complete flexibility in presentations and events.
Panasonic PTZ cameras for video conference calls are mounted on the wall, pillar, and ceiling, ensuring seamless tracking of the speaker on the podium or from the audience. The cameras feature a 4K/30Hz resolution, 24x optical zoom, and silent operation.
Wireless access for computers and mobile devices with different operating systems is provided by the Infobit iShare X400 system with two USB-C dongles and the option to display up to 4 participants on the presentation display.
Along with the digital signage system, multimedia players with advanced software were delivered for displaying content in 4K60 resolution. The system features an intuitive interface, the ability to schedule content, as well as various effects, transitions, and image formatting options. With over 250 widgets, content is seamlessly broadcast 24/7, offering a dynamic and professional presentation.
A video production system has been installed that supports 4K resolution for live streaming, recording, and video content processing. It features an intuitive touchscreen interface, uses SRT end-to-end 256-bit AES encryption, and supports HLS or RTMPS for secure content broadcasting. Content can be directly recorded onto the internal 500GB SSD, and the files are automatically transferred to a USB drive, local server, or network-attached storage device (FTP or SFTP). Additionally, picture-in-picture, side-by-side display, dynamic and static backgrounds with text are also supported.
The central part of the audio system is the Symetrix DSP audio processor with Dante protocol, featuring 12 inputs and 12 outputs, and 16 AEC (Acoustic Echo Cancellation) channels for eliminating acoustic echo, reverberation, and unwanted additional sounds from the signal passing through the acoustic space.
The sound system consists of d&b 24C column speakers with 24C-E additional extension, d&b BI 8 subwoofers, and pendant (hanging) speakers. For presenter audio, ceiling-mounted monitor speakers are installed. The system is connected via a 4-channel Class D amplifier, d&b model 10D AMP, with 700W/4Ω per channel, located in the rack cabinet in the technical control room. The speaker boxes are carefully grouped and adjusted for optimal sound delay, ensuring simultaneous listening for all participants at different positions in the room.
The wireless microphone system consists of 8-channel access points that automatically assign free frequencies to wireless microphones and enable two-way, encrypted communication of audio and control signals. It includes 24 interconnected wireless microphone systems with 16 handheld transmitters, DPA headsets, and lavalier microphones (bubies) of various directivity, providing clear and intelligible speech for both the presenter and the audience. A set of in-ear monitoring microphones, table and floor-standing stands, as well as chargers for simultaneous charging of 24 microphone units with batteries, were also delivered.
The speaker tracking system includes a computer controller and 24 PoE locators.
The control system includes: powering on/off the equipment, managing room scenarios (conferences, movie screenings, karaoke, etc.), controlling the switching of video and audio signals, managing the video conferencing system, controlling PTZ cameras, and managing the lighting system.
In order to enable efficient management by users and administrators, an Apple iPad with a graphical interface is used. Each controller is mounted in a suitable holder and powered via a PoE adapter. The graphical user interface is implemented with a minimal set of functions necessary for opening the room, managing events, and shutting down the room.
A LED lighting system is installed on the ceiling in front of the stage to achieve uniform lighting and optimal recording quality during video conferences. The system consists of diffuse LED spotlights with a CRI > 96 and adjustable color temperature ranging from 3,200K to 5,600K. Additional Fresnel lights with CRI > 91 and COB technology ensure even and consistent lighting for all participants on stage, without reflections on screens and flickering effects. The lighting is controlled via the MA Lighting MA3 onPC rack unit with predefined scenes that are activated according to the specific requirements of the event.
Additionally, 48-port PoE switches have been installed, allowing for the connection of video signals, Dante protocol, and control signals, as well as providing the necessary PoE power supply capacity.
In the technical room, 19" rack cabinets with shelves and a 10kVA uninterruptible power supply (UPS) have been installed, providing 15 minutes of operation in case of a power outage. Each UPS is connected to PDU (Power Distribution Unit) strips with 8 outlets, which can be remotely controlled via the IP network for sequential powering on and off of the equipment.
All signal installations are based on halogen free cables of appropriate cross-section, installed in cable routes with maximum protection against possible RF interference, interception between channels and interference from power cables.
After the installation, our expert team trained the technical staff for the management of this AV systems.
Photo credit: Shutterstock/Gorodenkoff