From Wikipedia, the free encyclopedia
Audio-over-Ethernet technology
EtherSound
is an
audio-over-Ethernet
technology for
audio engineering
and
broadcast engineering
applications. EtherSound is developed and licensed by
Digigram
.
[3]
EtherSound is intended by the developer to be compliant with
IEEE 802.3
Ethernet standards.
[4]
Just as the IEEE defines rates such as
100 Megabit
and
Gigabit Ethernet
standards, EtherSound has been developed as both ES-100 (for use on dedicated 100 Megabit Ethernet networks or within a Gigabit network as a VLAN) and ES-Giga (for use on dedicated Gigabit Ethernet networks). The two versions of EtherSound are not compatible.
Network technology
[
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]
While Ethersound is compliant with the IEEE 802.3
physical layer
standards, logically it uses a
token passing
scheme of transporting audio data which prevents all of its features from being used on a standard Ethernet network. On a standard network, it is only able to distribute audio and control data one way. It is not designed to share Ethernet
LANs
with typical office operations data or Internet traffic such as email. It supports two-way communications only when wired in a daisy chain topology.
[5]
For this reason Ethersound is best used in applications suitable to a daisy chain network topology or in live sound applications that benefit from its low point-to-point latency.
Low latency
[
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]
Low latency is important for many users of
audio over Ethernet
technologies.
[6]
[note 2]
EtherSound can deliver up to 64 channels of 48 kHz, 24-bit
PCM
audio data with a network latency of 125
microseconds
.
[2]
If including A/D and D/A conversions, this latency is about 1.5 milliseconds, the major part of
this latency being caused by the converters. Each device in a
daisy-chain
network adds 1.4 microseconds of latency.
[1]
EtherSound's network latency is stable and deterministic; The delay between any two devices on an EtherSound network can be calculated.
EtherSound Licensees
[
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]
The following companies have licensed the EtherSound technology.
[7]
- Apex Audio
- Archean Technologies
[10]
Notes
[
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]
- ^
Audio may only be passed unidirectionally through a
hub
or
switch
.
- ^
One of the most critical applications involves picking up sound from a vocalist's or instrumentalist's microphone on a live performance stage, mixing that signal with those received from other microphones (and performers) and delivering the mix to the performer via
in-ear monitors
. Latency in this application is particularly annoying to vocalists. This is because a singer hears his or her own voice through
bone conduction
as well as through the outer ear. If the sound from the in-ear monitor lags the bone-conduction sound by more than a few milliseconds,
phase shifts
and
comb filtering
will become audible.
References
[
edit
]
- ^
a
b
c
d
e
"Overview: An Introduction to the ES-100 Technology"
(PDF)
,
Digigram
, 2006, archived from
the original
(PDF)
on 2020-08-11
- ^
a
b
"Building EtherSound Networks"
(PDF)
,
Digigram
, 2005, archived from
the original
(PDF)
on 2020-08-11
- ^
"The EtherSound Tested Programme"
. Archived from
the original
on 2016-08-18
. Retrieved
2016-05-18
.
- ^
Dan Daley (May 5, 2016),
"Tech Focus: Digital Audio Networks, Part 2 ? The Major Players"
,
SVG News
- ^
"Best Practices in Network Audio"
(PDF)
. Audio Engineering Society. 2009
. Retrieved
2010-05-05
.
- ^
"Studer, Digigram partner for connectivity"
,
Television Broadcast
, 2007, archived from
the original
on 2016-09-10
- ^
"EtherSound Partners List"
.
ethersound.com
. Digigram
. Retrieved
2016-05-11
.
- ^
"Allen amp Heath Joins EtherSound Licensee Network"
. Retrieved
2016-05-18
.
- ^
"Amadeus Launches New 'PMX D Series' Speakers"
. Mixonline. 5 April 2016
. Retrieved
2016-05-18
.
- ^
a
b
c
d
e
f
"EtherSound Adds DiGiCo And Whirlwind"
. Retrieved
2016-05-18
.
- ^
a
b
c
d
e
f
g
h
i
j
k
l
"MELPOMEN COMPLETES ITS FIRST EtherSound-BASED NEXO Installation"
. NEXO
. Retrieved
2016-05-18
.
- ^
"CAMCO To Equip Entire Product Range With EtherSound"
. Retrieved
2016-05-18
.
- ^
"Barix Up Date - Barix Relevance"
. Retrieved
2016-05-18
.
- ^
a
b
"Peavey And Crest Audio License EtherSound Technology"
. Retrieved
2016-05-18
.
- ^
"Focusrite RedNet - Ethernet Audio Interface System"
. Retrieved
2016-05-18
.
- ^
"Klein+Hummel licenses EtherSound"
. Archived from
the original
on 2016-08-18
. Retrieved
2016-05-18
.
- ^
"LSI online - Digigram"
. Archived from
the original
on 2016-08-18
. Retrieved
2016-05-18
.
- ^
"New OnAir Software V4.0"
(PDF)
. Retrieved
2016-05-18
.
- ^
"Peavey, Crest Audio, & Yamaha License EtherSound"
. Retrieved
2016-05-18
.
External links
[
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]
Wikimedia Commons has media related to
EtherSound
.
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