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Networking Your Sound Networked Audio Terminals NCX Network Audio Terminal Distributing digital audio over a shared Ethernet network NCX Network Audio Terminals take Digigram audio processing power out of the computer and put it where you need it. They are reliable, flexible, and easy-to-use solutions for multi-zone audio distribution, audio on demand, and audio archiving. NCX Network Audio Terminal Meeting the need By distributing digital audio data over a standard Ethernet network, NCX Network Audio Terminals dramatically increase the maximum number of audio channels that can be reliably managed by a single computer. Both PCM and MPEG formats are supported. At the same time, we have provided a flexible and fast development environment essential to those who will create applications using this exciting technology. Think of an NCX terminal as a “remote” sound card. Sound cards are typically connected to a computer’s internal bus. NCX terminals provide the same audio input/output and processing functions, but are connected to the computer via Ethernet. NCX terminals can be put where you need them and can be hot-plugged and unplugged so changes can be made without shutting your system down. NCX terminals are available as both stand-alone units and as a circuit board for rapid incorporation into custom products. A networked application can be rapidly assembled. Each terminal is connected to the application-server PC using standard Ethernet (10/100BaseT) switches and cables. Overall system configuration is performed from the server where the application software resides, while ongoing application control can be from the server, from individual NCX terminals, from any remote computer using IP protocol, or a combination of both. Bi-directional serial communications capabilities are provided on each NCX, permitting source selection, status, and other communication with the server. Depending on the NCX model used, each audio terminal can record/encode, play/decode, or is full duplex. Multiple digital audio data streams can be sent to a single NCX for mixing on the audio terminal, helping to minimize CPU requirements on the application server. There are five standard models in the NCX range. In addition, Digigram looks forward to providing development partners with custom network and audio interfaces, as well as special enclosures and additional software capabilities, to fulfill specific requirements. Installed sound using computer-controlled audio Networked NCX audio terminals provide significant benefits beyond standard distributed audio or standalone devices: • A larger number of audio signals • Control from a local or remote locations • Improved audio quality • Compact, versatile enclosures or easy-to-integrate circuit board • Simplicity of installation, configuration, and application management • Greater reliability and flexibility As the API is the standard Digigram np SDK, the same application may manage server-resident Digigram sound cards along with multiple NCX terminals. Digigram can also provide advanced tools offering the ability to control the functions of multiple NCX networks from one or more control points via LAN, WAN, or the Internet. NCX terminal model Form Factor Mono outputs (may be paired for stereo) Mono inputs (may be paired for stereo) NCX200 Stand alone enclosure Two None NCX400 Stand alone enclosure Four None NCX400L OEM development board Four None NCX040 Stand alone enclosure Two Four NCX220 Stand alone enclosure (low quality, monitoring) Two Two NCX 400L OEM development board Typical NCX applications The role of an NCX terminal in a network may be defined remotely thanks to a central, adaptable system management. Thus an NCX terminal can satisfy the demands of various applications, such as: Multi zone audio distribution - retail, hospitality, theme parks, factories, railway stations, airports Background/foreground music and live announcements can easily be managed in multiple audio zones equipped with NCX audio terminals. A central point of control (even remote via TCP/IP) may be combined with local paging systems (microphone) for live announcements, using NCX's General Purpose I/Os. A simple pushbutton connected to the GPIO may be used to launch prerecorded messages in a particular audio zone, interacting with other parts of the system. Audio + GPIO management Audio on demand - museums, listening stations, guided tours Let your clients and visitors decide what they want to hear and when, NCX's RS232 port management allows connecting keyboards, touch screens, barcode scanners and more. The NCX can play audio streams per your user's choice, customized audio files or multilingual content on demand. Audio archiving - courts of law, convention centers, education NCX audio terminals may be used for decentralized, digital recording, when equipped with a microphone and connected to a central database. Recorded content becomes immediately available as digital sound files, allowing easy indexing, archiving, and format conversion. Audio + Power amplifier control RS232 GPIO Audio on demand Audio streaming MP3 realtime decoding Cross fade and realtime mixing RS232 Ethernet Network Audio Manager IP Network Remote control PC Intuitive GUI Announcement Script and event management PC server with NCX driver Local control Audio Manager (optional) For easy configuration and management of custom-made multi-zone audio installations using Digigram NCX audio terminals or miXart 8 multichannel sound cards, Digigram has developed an off-the-shelf-application: design and create your individual network with Audio Manager, benefit from performing tools to manage your individual audio network. No programming skills are required! For detailed information, please refer to our separate Audio Manager product sheet. I General • Processors: Motorola 56303 and AMD186. • RAM: 256 kWords (DSP) and 512 kBytes (AMD). I Audio inputs/outputs Stand-alone, enclosed units • One stereo or two mono unbalanced outputs are provided on two phono connectors at line level. Maximum level +4 dBu. • Balanced inputs and outputs on 15-pin SUBD connector. Maximum input/output levels: +10 dBu. • Input impedance: > 10 kOhm. • Headphone output on 3.5 mm (mini) stereo jack. Source impedance: 600 Ohm. OEM development circuit board • Two stereo or four mono unbalanced outputs on the main 25-pin SUB-D connector at line level. Maximum level: +3 dBu. • Output level adjustment: digitally from mute to maximum level. • Output impedance: 100 Ohm. • Headphone output on 3.5 mm (mini) stereo jack. Source impedance: 100 Ohm. I Audio specifications Stand-alone, enclosed units • Sampling frequency from 8 kHz to 50 kHz in 0.5 % steps • A/D and D/A converter resolutions: 24 bits (64-times oversampling, delta-sigma) • Frequency response at 48 kHz (PCM mode): 20 Hz -20 kHz, ± 0.1 dB • Signal to noise ratio (PCM, unweighted, record+play): > 92 dB • Distortion + noise at 1 kHz (PCM, record+play): < -88 dB (0.004 %) • Channel phase difference 20 Hz/ 20 kHz (PCM): 0.2°/2° • Analog channel crosstalk (at 1 kHz): <-95 dB OEM development circuit board • Sampling frequency from 8 kHz to 50 kHz in 0.5 % steps • D/A converter resolutions: 24 bits (64-times oversampling, delta-sigma) • Frequency response at 48 kHz (PCM mode): 20 Hz – 20 kHz, ± 0.25 dB (Load ≥ 300 Ohm) • Signal to noise ratio (PCM, unweighted): > 80 dB • Distortion + noise at 1 kHz/–3dBFs (PCM): < – 77 dB (0.01 %) • Channel phase difference 20 Hz/ 20 kHz (PCM): 0.2°/2° • Analog channel crosstalk (at 1 kHz): – 102 dB I System audio capabilities • • • • Real-time MPEG Layers I, II, and III decoding Real-time MPEG Layers I and II encoding Linear (PCM) audio capable Maximum mono audio streams (play plus record) at 48 kHz that can be managed by a single NCX: 3 PCM (16 bits) or 12 MPEG Layer II (128 kbps) • System capacity is computed by calculating the bandwidth requirements of the total number of audio streams. I Ancillary communications and status • Two RS-232 serial communications links offer control flexibility. For example, one link can be used for a keypad/display and the other for a barcode reader. Each pair of audio connections may be controlled independently. • Each terminal provides any combination of seven (eight on NCX400L) user configurable TTL inputs and outputs for application and device control. • LED indicators for power status, network activity and DSP status. I Ethernet network and server • NCX terminals use the IEEE 802.3/ANSI 8802-3 Ethernet standard. • We recommend the use of a dedicated network for NCX Terminals. To avoid sound dropouts, the network load should not exceed 30 % of the available bandwidth. • The use of 100/10 Mbps Ethernet switches prevents collisions of messages intended for different NCX terminals. • Each NCX terminal has a unique Ethernet ID. As the data path is fully Ethernet, without bridges or routers, an IP address is currently not needed nor provided. • Recommended application server specifications: Pentium III / 800 MHz with 128 Mb RAM, EIDE or Ultra SCSI hard disk drives, Windows NT4, 2000, or XP. 100baseT Ethernet adapter. I Mechanical Stand-alone, enclosed units • The electronic components are housed into a metallic enclosure designed to comply with CE and FCC Class B electromagnetic compatibility requirements. This metallic enclosure is embedded into a plastic cover (flame retardant class UL V0). • The serial ports use a 9-pin SUB-D connector. • TTL inputs and outputs are provided on a 15pin SUB-D connector. In addition, 5 VDC is available on the connector (100mA max. internal fuse protection). • Overall dimensions (without power supply): 175 mm x 175 mm x 45 mm. • Provided external power supply: 1.5 A, 5 VDC from 90 ~ 250 VAC. UL certified. • Operating temperature/humidity (noncondensing): 0 to +50°C / 10 to 90%. I OEM development circuit board • The compact card has one 25-pin SUB-D connector for the power supply, audio outputs and the control ports plus one RJ45 type connector for Ethernet. • Overall board dimensions: 138 mm x 120 mm x 18 mm. • External power supply required: 1.5 A, 5 VDC ± 5 %. • Operating temperature/humidity (noncondensing): 0 to +50°C / 10 to 90%. As the NCX is an evolving product, please contact Digigram for the latest information. Networking Your Sound Digigram (www.digigram.com) digital audio solutions are key to the success of public address and pro sound installations, as well as broadcast and media production companies worldwide. We develop innovative networked audio devices, computer sound cards, and audio management software. Digigram Powered solutions are installed in thousands of radio and television stations; corporate and commercial sound installations; and audio recording and video post-production facilities around the globe. Customers are served from three regional business units: Digigram SA (Digigram Headquarters, Montbonnot, France), Digigram Inc. (Arlington, VA USA), and Digigram Asia (Singapore). Digigram is publicly traded on the Paris stock exchange (Code ISIN: FR 00000 35784). Digigram SA Digigram Inc. Digigram Asia Pte Ltd. (Serving Europe, Africa, Middle East, Latin America) (Serving North America) (Serving Asia and Australia/Oceania) Parc de Pré Milliet 38330 Montbonnot-FRANCE Tel: +33 (0)4 76 52 55 01 Fax: +33 (0)4 76 52 53 07 E-mail: [email protected] 2101 Wilson Boulevard, Suite 1004, Arlington, VA 22201-USA Tel: +1 703 875 9100 Fax: +1 703 875 9161 E-mail: [email protected] 350 Orchard Road #19-07 Shaw House Singapore 238868-SINGAPORE Tel: +65 6291 2234 - Fax: +65 6291 3433 E-mail: [email protected] w w w . d i g i g r a m . c o m DP141900102 - Digigram and the Digigram logo are trademarks or registered trademarks of Digigram S.A. Other trademarks are property of their respective holders. All contents copyright © july 2005 by Digigram S. A. While every effort has been made to ensure accuracy, Digigram is not responsible for errors and omissions, and reserves the right to make improvements or changes in the products and programs described without notice. Specifications