This product configures audio redirection on a Linux thin client in a Citrix environment, to provide optimal support for speech recognition.
Installing on an IGEL thin client
The following thin clients are supported:
IGEL
For information on the IGEL thin clients supported, search for Nuance compatibility in the IGEL Knowledge Base.
Important: Due to changes in the firmware versions by the manufacturer, we don't guarantee that our drivers work with other firmware versions than the ones tested by us.
Device | Sound card ID | Sound card name | Comments |
---|---|---|---|
Nuance PowerMic 4 | P4 | PowerMic 4 | |
Philips SpeechMike III | III | SpeechMike III | 64-bit and 32-bit clients |
Philips SpeechMike Premium | III | SpeechMike III | 64-bit and 32-bit clients |
Grundig Digta SonicMic II | II | Digta Sonic Mic II | 32-bit clients |
Grundig Digta SonicMic II (US edition) | US | Digta SonicMic II US | 32-bit clients |
Grundig Digta SonicMic 3 | D3 | Digta SonicMic 3 |
32-bit clients Button controls aren't supported with the firmware available at the release of Capture Services (Desktop) 5.0 |
For the selection of audio devices, the following priority conditions apply:
The following audio formats are supported:
The Nuance Citrix Client Audio Extension is delivered with the IGEL firmware. To activate the extension, do the following:
In the Sessions tab, select Citrix XenDesktop / XenApp > HDX / ICA Global > Mapping > Device Support.
To enable logging, do the following:
Make sure that log4crc is available in the $HOME directory of the user who starts the client and rename it to .log4crc. For example:
IGEL: cp/usr/lib/ICAClient/log4crc/userhome/.log4crc
Open .log4crc; if the file is read-only, change it to read/write (you must have rights to change the file).
If the file has an attribute which prevents you from changing the file, remove it. You can check this with lsattr -a "dir path"
to see all file attributes. If the file has the a
or i
attribut,e you can remove it with chattr -a "file name"
or chattr -i "file name"
.
Set the priority
to "trace"
(for detailed logging) or "error"
(for error logging only) and change the line which begins with category name =
to:
Audio extension: nuance.smac.citrix.sbext
Mixer: nuance.smac.citrix.mixer
Note: If you don't want logging, comment out these lines or remove the .log4crc file completely.
logdir="/tmp/"
The log file prefix is the first part of the file name. The default settings are:
Audio extension: prefix="nca_ica_log"
Mixer: prefix="nca_ica_mixer_log"
Audio extension names are nca_ica_log.n and mixer nca_ica_mixer_log.n (where n is a consecutive number).
Every log file has a number appended to its prefix name. Numbers begin at 0 and existing log files are renamed to the next consecutive number; the newest log file always has the number 0.
maxnum
sets the maximum number of log files created. To have 5 log files, set the maxnum as follows: maxnum="5"
Older files are deleted when there are more than 5 files.
maxsize
sets the maximum size of a log file in bytes. If the maximum size is reached, the log file is renamed to the next number following the policy from maxnum
and a new log file is created with the number 0. The default settings are:
Audio extension: maxsize="20000000"
Mixer: maxsize="5000000"
To enable button support for Nuance PowerMic 4 devices, do the following:
Start the IGEL setup utility.
In the Sessions tab, select Citrix > Citrix Global > Mapping > Device Support.
Enable Philips speech channel for dictation.
For Philips SpeechMike and Foot Control devices contact Philips Speech Processing Solutions. The Nuance Citrix Audio Extension doesn't provide support for SpeechMike button redirection.
To use the Philips SpeechMike if it's not the default audio device, set the environment variable NUANCE_USED_SOUNDCARDNUMBER to the sound card number of the SpeechMike. If the environment variable doesn't exist or is invalid, the default sound card is used.
Recording with the internal sound card is not supported.
Using the internal sound card in parallel with a USB audio device is currently not possible because it's not possible to set the internal sound card as the default sound card when a USB default audio device is plugged in.
Use of this software is subject to the terms and conditions of the License Agreement.
© 2023 Nuance Communications, Inc. All rights reserved. Reproduction in whole or in part is prohibited without the written consent of the copyright owner.