Readme SpeechMike III and SpeechMike Premium

Firmware 2.50 (2014-11-03)

For Speech Mike III LFH3200, LFH3210, LFH3220, LFH3300, LFH3310
and SpeechMike Premium LFH3500, LFH3510, LFH3520, LFH3600, LFH3610

Contents

1. _Enhancements of this release

2. _Enhancements of previous releases

IMPORTANT

When upgrading your SpeechMike to the latest firmware version please make sure that the SpeechMike is connected during the whole firmware upgrade process.

To run a firmware upgrade please do following:

- Connect the SpeechMike to the PC
- Use the SpeechControl software to upgrade the firmware and wait until the firmware upgrade process is finished.

ATTENTION: If the SpeechMike is disconnected too early the firmware upgrade will not succeed.
Wait until you hear the USB disconnect and USB reconnect sound until you unplug the SpeechMike from the PC.

1. Enhancements of this release

The following enhancement has been implemented in Firmware 2.50:

• Introduction of Keyboard-mode: when selected, the device sends keyboard shortcut events to the host instead of the proprietary SpeechMike HID commands when a button is pressed.
  Works only with SpeechMike Premium versions, SpeechMike 3200/3300 series devices do not support the keyboard mode.
  More information on how to program and utilize the SpeechMike Premium keyboard mode can be found in the SpeechControl 3.4 Workbook


• Fixed a rare problem, where the accelerator sensor reported a picked-up event even when the device was not moved at all.


• In rare cases the recording audio data was not transferred to the PC. To avoid lost recordings the USB-interface is now reinitialized every time an audio stream is started.

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2. Enhancements of previous releases

Enhancements of Firmware v2.19:

• More stable behavior during booting of virtual environments:
  In rare cases the device froze after the boot process had finished when moving the trackball during the operating system boot process.
  According to our experience this user behavior is forced in virtual environments, because users check the availibity of the virtualized operating system
  by moving the SpeechMike trackball during the boot process.
  Moving the trackball during booting does no longer cause the SpeechMike to freeze.
  

Enhancements of Firmware v2.18

• Solved a problem where the device stopped the device to respond to pressed buttons or trackball movements.


• Under some rare circumstances the USB driver on the host missed a button or slider event.


• Each button and slider event is now sent twice to avoid these situations.


• The polling rate of the HID-interface, which handles Speechmike proprietary information, has been changed from 8msec intervals to 4msec intervals
  to avoid occasional connecting problems with hosts, where a Speechmike-aware application was already running.


• The handling of audio settings has been changed in V2.15, which caused occasional delays when starting speech recognition with Dragon Dictate.
  V2.18 reverted to the former method to avoid these delays.


• Linux does not poll unused USB interfaces of a device (which is against USB specification).
  This can cause problems, when no Speechmike-aware application is running, and a button is pressed unintentionally.
  In that case the Speechmike waited until a Speechmike-aware application was started, and did not react to trackball movements till then.
  This has been fixed.


• A record level limiter has been implemented to avoid distorted recordings.
  The limiter has successfully been tested with leading speech recognition engines.
  It is enabled by default, but it can be toggled by simultaneously pressing the F2 + F3 key for 5 seconds.

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Use of this software is subject to the terms and conditions of the License Agreement.

SpeechMike are registered trademarks of Speech Processing Solutions GmbH

© Copyright (c) 2014 Speech Processing Solutions GmbH.
All rights reserved! Reproduction in whole or in part is prohibited without the written consent of the copyright owner.

Speech Processing Solutions

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