The Barix IP AUDIO MODULE 102 is a versatile network audio module that encodes and decodes PCM, G.711, G. 722, Ogg Vorbis and MPEG audio. The IPAM 101 model is intended for OEM applications where G.722 and MP3 encoding is not required. Both models enable manufacturers of traditional audiodevices to add network capabilities to their products.
Common Applications are:
- Commercial Audio Streaming Applications
- Digital Annunciator, Message Player, Message Repeater
- Generic, bidirectional full-duplex VoIP module for Paging and Intercom applications
- Source Encoder for IP Audio Distribution Applications
- Background Music and Music-on-Hold encoder for VoIP Applications
- Low latency IP Audio Encoder for multichannel applications
Each module is a complete system consisting of CPU, DSP, memory and interface circuitry, providing network and high speed serial interfaces, general purpose I/Os,
analog and digital audio interfaces.
For OEM hardware integration a development specification with schematic, pin-out and layout guidelines is available. An IPAM Evaluation Kit, containing a carrier PCB and the IP audio module 102, is available.
Various software packages for standard applications are available for download from the Barix website, optimized for encoding, audio distribution, paging and
intercom, including a full featured SIP client.
Custom software can easily be written, based on existing packages from Barix written in the ABCL language.
For low cost applications the Barix IP AUDIO MODULE 300 with reduced set of interfaces and audio decoding capabilities is available.
Key Features
- MP3, G711, G.722, PCM Encoding
- AACplus, MP3, Ogg Vorbis, G.711, G.722, PCM linear Decoding
- Shoutcast/Icecast Source capability
- Audio Level Supervision with SNMP Trap generation
- IP Streaming via TCP, UDP, RTP, Multicast
- Microphone Input
- Line Level Input (Stereo)
- Line Level Output (Stereo
- General Purpose I/O (8)
- RS-232 Serial Port (TTL Level)
- RS-485 Serial Port (TTL Level)
- Supply Voltage (5V)
- USB Flash Memory Interface
Electrical
5 VDC (-20% / +10%), 1.6 Watt max.
3 x 40 pin, high density, 0.8 mm spacing, SMT connectors
Ethernet
Two 10/100 Mbps (auto) Ethernet: primary with built-in PHY,
secondary intended for redundancy use (MII only, requiring external PHY),
outputs for dual color Link/Activity LEDs
Audio Interfaces
Mic input 111 mVPP max (with Bias power),
Stereo input 2.2 VPP max, both adjustable in sensitivity
Frequency response 20 Hz ..20 kHz (-3 dB)*
Dynamic range 87 dB, SNR -87 dB, THD <0.01% (-3dBFS)*
Stereo output 3 VPP max, volume, bass and treble adjustable
Frequency response 20 Hz ..20 kHz (-3dB)*
Dynamic range 94 dB, SNR -94 dB, THD <0.03% (-3 dBFS)*
I²S output (Inter-IC Sound)
Audio formats (encode & decode
PCM (16 bit and 8 bit (uLaw, aLaw) @ 8..48 kHz)
G.711
G.722
OggVorbis
AAC+ (decode only) (requires separate licensing by OEM)
MP3 (encoding/decoding up to 192/320 kbps)
Misc. Interfaces
Dual TTL Level UART 300..230‘400 Baud asynchronous
Outputs for 2 dual color Ethernet status LEDs,
8 General Purpose I/Os,
1 input for reset button,
1-wire bus,
2 status LED outputs,
USB1.1 interface for memory
CPU / Memory
Integrated CPU / MAC / IO controller with on-chip 256 KB RAM,
2 KB EEPROM for configuration,
2 MB Flash memory for system, application, data and web server content
Operating System
Embedded, robust OS, IP stack with support for TCP/IP, UDP, RTP, SIP, DHCP, Multicast/IGMP
User / Application Interfaces
Integrated web server (control/configuration),
browser based, serial or Ethernet control interface,
programmable software environment
Mechanical
Weight 14g, 2 mounting holes 2.7mm (for 2.5mm screws)
Dimensions (W x D x H)
53 x 39 x 8 mm (2.1 x 1.5 x 0.31 inch)
MTBF
Calculation acc. MIL217F at 40°C)
IPAM 102 min. 1 100 000h
I* depends on used codec, best results @ 48 kHz PCM
I** 0 - 70% relative humidity, non-condensing
