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APT Worldcast APT IP CODEC - Complete Audio over IP Codec

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The APT IP CODEC (formerly known as WorldCast Horizon NextGen) offers the most complete set of IP features ever included in APT’s extensive range and features both our revolutionary “SureStream” technology and intelligent ScriptEasy scripting. In addition, this next generation IP audio codec also... Read More

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The APT IP CODEC (formerly known as WorldCast Horizon NextGen) offers the most complete set of IP features ever included in APT’s extensive range and features both our revolutionary “SureStream” technology and intelligent ScriptEasy scripting. In addition, this next generation IP audio codec also offers a wide range of algorithms as standard on a solid DSP platform with dual IP ports and redundant power supplies. Despite the high feature density, the APT IP CODEC is extremely competitively priced.

Perfect for STLs and mission-critical applications, the APT IP CODEC provides extensive control and monitoring capabilities to manage both your audio, data and network conditions and other equipment located at the transmitter site.


  • Professional and Affordable IP Audio Codec
  • Dual IP Ports, configurable for management and redundant streaming
  • Multi-algorithm support as standard, including HE-AAC, aptX® Enhanced andamp; linear
  • Audio Backup from SD card
  • 192/128kHz Sampling supports transmission of Digital MPX/Composite over AES*
  • Content Time Alignment for Multi-Frequency FM networks utilizing NTP
  • SureStream Technology enables broadcast-grade audio over inexpensive IP Links*
  • Distributed Intelligence powered by ScriptEasy
  • Forwarding of audio or non-audio UDP streams, such as PAD or HD Exporter Data
  • Auto-Detection of received audio format
  • Auxiliary data for transmission of RBDS / RDS or PAD
  • Network Security features with Firewall capability
  • 4 Opto-coupled Inputs and 4 Relay Outputs
  • Support for SNMP, Alarm andamp; Event Logging
  • Supports SIP/SDP Connection Modes
  • Reliable DSP-based architecture 
  • Intuitive Web Interface

SureStream technology is a revolutionary innovation from APT that enables broadcasters to use inexpensive IP links and still maintain professional broadcast-grade audio quality and reliability.

It delivers the audio quality and reliability you expect from a T1/E1 link at a fraction of the associated cost. APT SureStream Technology also offers the added benefit of «Always-On Redundancy». With APT SureStream Technology, you can save thousands on your audio transport bills and still offer your listeners the highest quality sound.

ScriptEasy is the revolutionary facility control software developed by WorldCast Systems to give users the power and flexibility to create “Smart” sites; ones that can automatically take action to correct any critical errors that affect operations.

Featuring an intuitive Graphic User Interface (GUI), ScriptEasy incorporates GPIO functions, serial communications, logic operators, live user inputs, timers and more. This allows the site operations to be “scripted”, to allow evaluation of multiple parameters and even automatically engage backup systems, while simultaneously alerting relevant technical personnel.

The WorldCast Manager simplifies the management of all SNMP-enabled devices in a network, providing real-time status, historical data and visualization of multiple devices from a single screen. The intuitive and simple-to-use interface shows all devices located at your site(s) displaying product information, alerting you to any alarms and providing one-click access to the unit’s web-based control interface.

The WorldCast Manager is compatible with all WorldCast Systems’ equipment as well as SNMP devices from ANY manufacturer.

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Product Specs

Ethernet Dual physical Ethernet ports, RJ45 for management and streaming
Virtual Network Virtual Interfaces and VLAN tagging
Analog I/O Electronically balanced, capacitive isolated XLR for Left/Right, Imp. Hi/Lo and 600 Ω
Digital Audio I/O AES-3, 24 Bit, transformer balanced, Imp. 110 Ω, XLR-Connectors
Digital Ref Input AES, transformer balanced, 110 Ω, XLR
Serial Aux Data 9 pin D Type, RS232 level
GPIO 15 pin D-Type
Management Web GUI, APT NMS, SNMP, XML API available with a later release
Asymmetric Audio Independent audio modes for sent and receive, Tx and Rx clock domains
Digital Operation Output FS, 32 kHz, 44.1 kHz, 48 kHz
Audio Bandwidth 10Hz to 20kHz mono & stereo
88kHz for digital MPX over AES (option)
Standard Coding Algorithms aptX Enhanced 16 & 24 Bit, Linear PCM 16 & 24 Bit, MPEG 1/2 Layer II, MPEG4: AAC-LC/LD/ELD, MPEG2/4: HE-AAC v1/v2, OPUS
Coding Delay min. 2ms on Eapt-X and higher depending on chosen algorithm
Dynamic Range 16 Bit >85dB, 24 Bit >120dB
Phase Response Linear DC to Fs/2
Pass Band Ripple < 0.2dB
Network and IP
IP Protocols Supported SIP/SDP, RTP/UDP/IP, RTCP, DNS, Dynamic DNS, DHCP, ICMP, IGMP, VLAN#, UPnP (IGD), NTP, SNMP, SMTP, HTTPS (management)
IP Statistics Complete IP Statistics for each stream
Casting Modes Unicast, multiple unicast, multicast, multimulticast
De-Jitter Buffer Buffer size 5 - 5,000ms adjustable, automatic packets re-sequencer
RTP/UPD Streaming and Modes Stereo audio multiple Tx-Streams, UDP stream forwarding, Auto-Detection of received Stream, Auto-Reply to sender
SIP Modes Peer-to-peer SIP, Server account SIP
Quality of Service DiffServ, with separate DSCP values per stream, SureStream Technology* and Error Concealment
Backup Features SD Card for audio file storage
Network Security Service Filter and Firewall Features
Serial Data Rates (embedded) 1200, 2400, 4800, 9600 Baud
Serial Data Rates via IP 1200 - 115,200 Baud (8 rates)
AUX Data via UDP UDP forwarding PAD or private Data
GPIO 4 switch inputs, 4 relays; GPI transmitted as separate UDP stream or embedded in Eapt-X
19” rack mount 1U Dimensions (W / L / H) 44mm x 482mm x 160mm
Weight < 1,5 kg - 3.355 lbs
Main Power Supply 100-250 V / 50-60 Hz
Power Consumption < 20W
Guaranteed Working Temperatures 0°C - +55°C
Humidity Up to 95% relative humidity (non-condensing)

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