Difference between revisions of "HD audio for background music distribution"

Latest revision as of 14:10, 27 October 2023

Distribution of HD Audio to ENA Amplifiers

Background music is distributed by using the Audio Program feature of the ICX-AlphaCom. By default this feature is using the HD Voice codec G.722.

In installations where an even better audio quality for background music distribution over the PA system is required, it is possible to use the HD Audio codec PCM L16/48kHz.

The following devices support audio input feed using the PCM L16/48kHz codec:

ENA Amplifier
TKIE-2 kit

The following devices can play (listen to) audio in PCM L16/48kHz format:

ENA Amplifiers (ENA2200, ENA2400-AC, ENA2400-DC and ENA-2100)
Turbine kits (TKIE-1, TKIE-2 and TKIS-2)
IP Speakers (ELSII-10H and ELSIR-10C)

The HD Audio stream is not going via the ICX-AlphaCom, the ICX-AlphaCom does not support this format. Only the signalling protocol is controlled by the ICX-AlphaCom.
Stations that are not configured for HD Audio support will resample to a supported sample rate.
Although the "HD Audio" option is available in all Turbine devices ("Voice Engine Mode"), the echo cancelling is disabled when enabling "HD Audio". Hence the station will not be suitable for two-way communication. The "HD Audio" option is intended for Turbine kits used as PA Interfaces.

Requirements

Software
HD Audio is supported from:

ICX-AlphaCom: 1.0.3.0
AlphaCom XE: 12.5.3.1
Intercom device: 4.9.3.0 (recommended: 8.0.3.0 or higher)

License:

HD Audio for background music distribution requires a High bandwidth audio license. It is sufficient with one HD Audio license per ICX-AlphaCom server.
If the Audio Input source is the Line Input of the ENA Amplifier, one ENA Amplifier Channel License is required
To install the license, log on to the web interface of the ICX-AlphaCom server, and select System Configuration > Licensing.

Audio Source Configuration

TKIE-2 as Audio Source

Log in to the web interface of the TKIE kit, and enable Advanced Configuration in the top right corner of the web interface.

Enable Line In:
To use the TKIE-kit as Audio Program source, enable Line In. A reboot of the TKIE kit is required for the change to take effect:

Enable Line In on the TKIE kit

Disable AGC (Automatic Gain Control):

Disable AGC

Set Audio Engine Mode = HD-Audio:

Enable HD-Audio

ENA Amplifier as Audio Source

The Line In on an ENA amplifier can be used as Audio Program Source.

Log In to the amplifier
In Main > Main Settings enter a directory number to use for the Line Input:

Enter a directory number to use for the Line Input

Audio Receiver Configuration

In the devices that should play HD Audio (e.g. ENA Amplifiers, Turbine kits or IP Speakers), the Audio Engine Mode must be set to HD-Audio:

Enable HD-Audio

Configuration of ICX-AlphaCom server

The "HD Audio" is transmitted from the Audio Source as Multicast data in the network. The ICX-AlphaCom must be configured to use Multicast for group audio.

In AlphaPro, Exchange & System > System > VoIP tab, enable Multicast:

Enable Multicast in ICX-AlphaCom

The Line Input channel of the ENA Amplifier (or the TKIE-2 kit) must register to a directory number in the ICX-AlphaCom server.

In AlphaPro, Users & Stations, enter a directory number for the Line Input and set the Noise Reduction to 0:

Define a Directory Number for the Audio Program Source

Create a feature code to become an Audio Source. From AlphaPro Directory & Features, press Insert and create a new directory number:

Feature 118 - Program Source
ID (Parameter 1) = Program channel 1-70
Parameter 2 = Group index 1- 255. Choose a group which is not in use. Important: At least one station must be included in this "dummy" group.
Parameter 3 = 10 (PCM L16/48kHz codec)

The example below shows how to add directory number 6801 as the code to become the source of Audio Program #1.

A device dialing 6801 will become the source for Audio Program 1 (ID = Program channel). A station must be included in group 100.

Include at least one station/user in the group defined in parameter 2 above (in this example group 100):

A station must be included in group 100. It doesn't have to be a "real" station

The station added to the group doesn't have to be a real station, simply pick any unused station. Do not add an IP Dummy to the group, as it will prohibit the HD Audio setup.

A station/device dialing feature 118 becomes the program feeder. Add an event that sets the Audio Program Source as source for program feed. Use the event 13 (Faulty Station), When Change To = OFF, and action: $DD L%1.dir L6801.

The Audio Program Source dials 6801 after registration, and becomes the source for program #1

The Audio Program Source must be allowed access to feature 118. To avoid any other station/device dialing the directory number for the feature, it is advisable to define a separate COS for this feature. Add feature 118 to this Class of Service (CoS #2 in the example below).

Make feature 118 "valid" in Class of Service 2

Assign the Audio Program Source to the Class of Service:

Setting Class of Service 2 for the Audio Program Source

Reboot the ICX-AlphaCom:
After having updated the ICX-AlphaCom (SendAll), the ICX-AlphaCom needs to be rebooted in order to trigger the event that forces the Audio Program Source to start feeding audio.

The Directory numbers used to listen to program are the default numbers 801 - 806. The directory number for feature 118 (e.g. 6801) is NOT for listening, but used to set the source for the program channel.
In AlphaCom XE20/26, do not use feature 118 for Audio Program channel 1-6, as these channels are reserved.
In AlphaCom XE7, do not use feature 118 for Audio Program channel 5 and 6, as these channels are reserved.

Using Audio Programs

@@ Line 1: / Line 1: @@
-{{AI}} [[File:ENA HD Audio.png|thumb|right|600px|Distribution of HD Audio to ENA Amplifiers]]
+{{AI}} [[File:HD Audio Block.png|thumb|right|600px|Distribution of HD Audio to ENA Amplifiers]]
 Background music is distributed by using the [[Audio Program|Audio Program feature]] of the ICX-AlphaCom. By default this feature is using the HD Voice codec G.722.
@@ Line 12: / Line 12: @@
 * Turbine kits ([[TKIE-1]], [[TKIE-2]] and [[TKIS-2]])
 * IP Speakers ([[ELSII-10H]] and [[ELSIR-10C]])
 {{Note|
 * ''The HD Audio stream is not going via the ICX-AlphaCom, the ICX-AlphaCom does not support this format. Only the signalling protocol is controlled by the ICX-AlphaCom.''
-* ''Stations that doesn't support HD Audio will not receive any audio.''
+* ''Stations that are not configured for HD Audio support will resample to a supported sample rate.''
 * ''Although the "HD Audio" option is available in all Turbine devices ("Voice Engine Mode"), the echo cancelling is disabled when enabling "HD Audio". Hence the station will not be suitable for two-way communication. The "HD Audio" option is intended for Turbine kits used as PA Interfaces''.}}
@@ Line 25: / Line 22: @@
 '''Software'''<br>
 HD Audio is supported from:
-* ICX 1.0.3.0
+* ICX-AlphaCom: 1.0.3.0
-* AMC 12.5.3.1
+* AlphaCom XE: 12.5.3.1
-* Turbine 4.9.3.0
+* Intercom device: 4.9.3.0 (recommended: 8.0.3.0 or higher)
 '''License''':
@@ Line 34: / Line 31: @@
 * To install the license, [[ICX_Web#Logging_in|log on to the web interface]] of the ICX-AlphaCom server, and select '''System Configuration''' > '''Licensing'''.
-== Configuration ==
+== Audio Source Configuration ==
-=== Configuration of ENA Amplifier ===
+=== TKIE-2 as Audio Source===
+[[Logging into an IP Station|Log in to the web interface]] of the TKIE kit, and enable '''Advanced Configuration''' in the top right corner of the web interface.
+Enable Line In:<br>
+To use the TKIE-kit as Audio Program source, enable '''Line In'''. A reboot of the TKIE kit is required for the change to take effect:
+[[File:HD LineInTKIE.PNG|thumb|left|700px|Enable Line In on the TKIE kit]]
+<br style="clear:both;" />
+Disable AGC (Automatic Gain Control):
+[[File:HD_AGC_Off.PNG|thumb|left|700px|Disable AGC]]
+<br style="clear:both;" />
+Set '''Audio Engine Mode''' = ''HD-Audio'':
+[[File:HD AudioEngine.PNG|thumb|left|700px|Enable HD-Audio]]
+<br style="clear:both;" />
+=== ENA Amplifier as Audio Source ===
+The Line In on an ENA amplifier can be used as Audio Program Source.
 *[[Logging into an IP Station|Log In to the amplifier]]
-* In '''Station Main > Main Settings''' enter a directory number to use for the Line Input:
+* In '''Main > Main Settings''' enter a directory number to use for the Line Input:
-[[File:ENA Audio In.png|thumb|left|500px|Enter a directory number to use for the Line Input]]
+[[File:HD ENA LineIn.PNG|thumb|left|700px|Enter a directory number to use for the Line Input]]
 <br style="clear:both;" />
-* '''Enable the Line Input''': In [[ENA_Configuration_-_AlphaCom_mode#Line_Control|Amplifier Settings > Line Control > Line In]] section, set '''Line In Type''' = "Line Input", and set Impedance to High or 600 ohms (most common).
+== Audio Receiver Configuration ==
+In the devices that should play HD Audio (e.g. ENA Amplifiers,  Turbine kits or IP Speakers), the '''Audio Engine Mode''' must be set to HD-Audio:
-=== Configuration of TKIE-2 ===
+[[File:HD AudioEngine.PNG|thumb|left|700px|Enable HD-Audio]]
-For TKIE used as Audio Program source: Set '''Audio Input Source''' to "Line In". Make sure AGC is disabled and Voice Engine is set to HD-Audio:
-[[File:HD Line In.png|thumb|left|500px|Set "Audio Input Source" = Line In]]
 <br style="clear:both;" />
-=== Configuration of ICX-AlphaCom server ===
+== Configuration of ICX-AlphaCom server ==
 The "HD Audio" is transmitted from the Audio Source as Multicast data in the network. The ICX-AlphaCom must be configured to use Multicast for group audio.
 In AlphaPro, '''Exchange & System''' > '''System''' > '''VoIP''' tab, enable '''Multicast''':
-[[File:AP Enable Multicast.png|thumb|left|500px|Enable Multicast in ICX-AlphaCom]]
+[[File:AP Enable Multicast.png|thumb|left|700px|Enable Multicast in ICX-AlphaCom]]
 <br style="clear:both;" />
@@ Line 60: / Line 79: @@
 In AlphaPro, '''Users & Stations''', enter a directory number for the Line Input and set the Noise Reduction to 0:
-[[File:HD Audio1.png|thumb|left|500px|Create a Directory Number for "Line Input"]]
+[[File:HD AP Source.PNG|thumb|left|700px|Define a Directory Number for the Audio Program Source]]
 <br style="clear:both;" />
@@ Line 67: / Line 86: @@
 * Feature 118 - [[Program_Source|Program Source]]
 * ID (Parameter 1) = Program channel 1-70
-* Parameter 2 = Group index 1- 255. Chooose a group which is not in use. At least one station must be included in this "dummy" group.
+* Parameter 2 = Group index 1- 255. Choose a group which is not in use. '''Important:''' At least one station must be included in this "dummy" group.
 * Parameter 3 = 10 (PCM L16/48kHz codec)
 The example below shows how to add directory number 6801 as the code to become the source of Audio Program #1.
-[[File:Feature 118.png|thumb|left|500px|A device dialing 6801 will become the source for Audio Program 1 (ID = Program channel). A station must be included in group 100.]]
+[[File:Feature 118.png|thumb|left|700px|A device dialing 6801 will become the source for Audio Program 1 (ID = Program channel). A station must be included in group 100.]]
 <br style="clear:both;" />
-{{Note|Do not add an IP Dummy to the group, as it will prohibit the HD Audio setup. A regular dummy will work.}}
+Include at least one station/user in the group defined in parameter 2 above (in this example group 100):
-A station/device dialing feature 118 becomes the program feeder. Add an event that sets the Line Input of the ENA Amplifier (or TKIE-2) as audio program source. Use the event 13 (Faulty Station), When Change To = OFF, and action: ''$DD L%1.dir L6801''.
+[[File:HD Group.png|thumb|left|700px|A station must be included in group 100. It doesn't have to be a "real" station]]
+<br style="clear:both;" />
-[[File:ENA LineIn Prog1.PNG|thumb|left|500px|The ENA Line Input dials 6801 after registration, and becomes the source for program #1]]
+{{Note|The station added to the group doesn't have to be a real station, simply pick any unused station. Do not add an IP Dummy to the group, as it will prohibit the HD Audio setup.}}
+A station/device dialing feature 118 becomes the program feeder. Add an event that sets the Audio Program Source as source for program feed. Use the event 13 (Faulty Station), When Change To = OFF, and action: ''$DD L%1.dir L6801''.
+[[File:HD Event Source.PNG|thumb|left|700px|The Audio Program Source dials 6801 after registration, and becomes the source for program #1]]
 <br style="clear:both;" />
-The station/device appointed as program feed must be allowed to access feature 118. Add feature 118 to the Class fo Service group the station/device is belonging to.
+The  Audio Program Source must be allowed access to feature 118. To avoid any other station/device dialing the directory number for the feature, it is advisable to define a separate COS for this feature. Add feature 118 to this Class of Service (CoS #2 in the example below).
-[[File:AudioSourceCOS.png|thumb|left|500px|Adding feature 118 to Class of Service 1]]
+[[File:AudioSourceCOS.png|thumb|left|700px|Make feature 118 "valid" in Class of Service 2]]
 <br style="clear:both;" />
-To avoid any other station/device dialling the directory number for the feature, it is advisable to define it in a separate COS.
+Assign the Audio Program Source to the Class of Service:
-[[File:AudioSourceCOS2.png|thumb|left|500px|Setting Class of Service 2 for the audio source station/device]]
+[[File:HD CoS.png|thumb|left|500px|Setting Class of Service 2 for the Audio Program Source]]
 <br style="clear:both;" />
+'''Reboot the ICX-AlphaCom''':<br>
+After having updated the ICX-AlphaCom (SendAll), the ICX-AlphaCom needs to be rebooted in order to trigger the event that forces the Audio Program Source to start feeding audio.
 {{Note|
@@ Line 103: / Line 130: @@
 [[Category: Public Address - Features and configuration]]
+[[Category: Audio Settings and Audio Features]]