Readme for IGEL

This IGEL Linux version contains Nuance Citrix Client Audio Extension for Linux 7.48.0

Nuance Citrix Client Audio Extension configures audio redirection on a Linux thin client in a Citrix environment, to provide optimal support for speech recognition.

Contents

Thin clients supported

Audio devices supported

Audio formats

Installation:

Installing on an IGEL thin client (firmware version 5.08.100 or higher)

Logging

Philips SpeechMike

Internal sound card

Thin clients supported

Nuance supports the following IGEL thin clients with firmware version LX 10.3.x

The Nuance Extension will be available on all devices mentioned in the IGEL Knowledge Base under 10.3.x, see IGEL OS.

Important: Due to changes in the firmware versions by the manufacturer we do not guarantee that our drivers will work with other firmware versions than the ones tested by us.

Back to top

Audio devices supported

Device Sound card ID Sound card name Comments
Philips SpeechMike III III SpeechMike III  
Philips SpeechMike Premium III SpeechMike III  
Grundig Digta SonicMic 3 D3 Digta SonicMic 3  
Nuance PowerMic   (via PulseAudio) Default audio device; no button support

For the selection of audio devices, the following priority conditions apply:

Back to top

Audio formats

The following audio formats are supported:

Back to top

Installation

Installing on an IGEL thin client (firmware version 5.08.100 or higher)

In version 5.08.100 and higher, the Nuance Citrix Client Audio Extension is delivered with the IGEL firmware. To activate the extension, do the following:

  1. Start the IGEL setup utility.
  2. In the Sessions tab, browse for:

    Citrix XenDesktop / XenApp, HDX / ICA Global, Mapping, Device Support

  3. Enable Nuance Channel for Dictation.

Back to top

Logging

To enable logging, do the following:

  1. Make sure that log4crc is available in the $HOME directory of the user who starts the client and rename it to .log4crc. For example:

    cp /usr/lib/ICAClient/log4crc /userhome/.log4crc

  2. Open .log4crc; if the file is read-only change it to read/write (you must have rights to change the file).

  3. 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 do not want logging, comment out these lines or remove the .log4crc file completely.

Remarks

Back to top

Philips SpeechMike

Button redirection

For Philips SpeechMike and Foot Control devices contact Philips Speech Processing Solutions. The Nuance Citrix Audio Extension does not provide support for SpeechMike button redirection.

SpeechMike (USB) audio

To use the Philips SpeechMike if it is not the default audio device, set the environment variable NUANCE_USED_SOUNDCARDNUMBER to the sound card number of the SpeechMike. If the environment variable does not exist or is invalid, the default sound card will be used.

Back to top

Internal sound card

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 is not possible to set the internal sound card as the default sound card when a USB default audio device is plugged in.

Back to top