IP NETWORKS. EVERYWHERE.
IP is like Pac-Man. Eventually, it will eat everything in it’s way.
President AT&T Labs
LOSSLESS. MULTI-CHANNEL. UNIVERSAL IP.
MULTI-CHANNEL AUDIO WITH ANY IP NETWORK
RESONETZ LINK provides multi-channel, low latency transmission in local and wide area networks, including Fiber-to-the-Home (“Dark Fiber”) and the public internet. Solutions for NTT´s IP-based communication network ("HIKARI DENWA") as perfect replacement for ISDN connections are available.
LOSSLESS HIGH RESOLUTION AUDIO
RESONETZ products provide bit-transparent high-resolution audio with up to 24 Bit and 192 kHz. No psycho-acoustic compression like in MP3 format take place. CODEC compression is optional.
RELIABLE REALTIME TRANSMISSIONS
RESONETZ LINK provides broadcast-reliable transmissions with low latency in various networks. Thanks to the patented sample synchronization and realtime network monitoring algorithms, RESONETZ products deliver a superior performance even in shared networks with high transmission jitter.
SEAMLESS INTEGRATION WITH PRO-AUDIO FORMATS
RESONETZ interfaces bridges bi-directional to the industries digital multichannel standards: MADI or AES/EBU. This way RESONETZ provides the gateway for countless pro audio setups to the 21st century´s network audio distribution.
The EtherMADI-64 realizes all pro-audio advantages of the MADI format in the world of Audio-over-IP:
Multi-Channel. High quality. High Reliability.
Patents: 2013-203074(JP), 14/138781(US), 14152425.6(EU)
THE LOW LATENCY IP SOLUTION.
NETWORK BANDWIDTH AND LATENCY
Bandwidth and latency of a network define the speed and the ability to process (audio) data in realtime and provide the essential timing and synchronisation. The bandwidth defines the amount of data that passes through a connection over a given time (bits per second - bps). For the best performance a Gigabit network or better is recommended.
The network latency is the amount of time it takes for a packet to travel from source to destination - for AoIP the time from an audio node to another audio node. With a time below 500 microseconds for node-to-node (digital-to-digital) packet transmission in a typical in-house LAN and less than 40 ms for WAN transfer, the RESONETZ LINK latency amounts only a fraction of a second and marks the edge of the technologically possible.
LOW LATENCY vs. BANDWIDTH EFFICIENCY
For a low latency the packet size has to be small, which means a smaller audio payload in each packet (down to 3 samples!). Therefore much more packets are needed to send the equivalent amount of audio through the network.
IP networks are not the perfect partner for realtime audio. They transmit audio packets like any other packets. Switches and routers read the adresses on the “envelopes” and deliver them to their destinations. In contrast to the usual traffic with occasional transfer peaks, even a few uncompressed audio channels create a continuous, hardware-exhausting stream of incredible small packets.
NUMBER OF IP PACKETS: Audio-over-IP (red) vs. Office PCs (white):
RESONETZ REALTIME NETWORK ADAPTATION
The huge amount of data and protocol overhead in the packet stream (more “envelopes”) results in a lower bandwidth efficiency. Depending on the present condition of the network - size and utilization - an increase of low-latency traffic can lead to congestion and traffic load balancing. Packets could be delivered out of order, delayed, duplicated or even get lost.
The ratio between payload size, latency and network efficiency is a complex system of mutual dependence. Finding the best compromise between these factors is a key feature for every Audio-over-IP protocol.
As there could be never a perfect solution with fixed values, RESONETZ provides an innovative way of seamlessly adaptation to the network data processing capabilities.
Thanks to the constant realtime measuring of the network parameters, RESONETZ devices find the best solution for the lowest latency and the best network efficiency by creating packets with a latency-optimized size, based on the up-to-date condition of the network - measured in realtime.
READ ON: RESONETZ LINK. NETWORK LAYERS.