V1.xx is
valid for LFH5260, LFH5262, LFH5270, LFH5272, LFH5274 and LFH5276
V1.25 technical release 2009-07-20
Following issue is solved:
- Sampling frequency changes during recording when a
windows system sound event occurs
Up till now
SpeechMikeII supports multiple frequencies in record
and playback.
Being a
full duplex device, it is possible that a playback request is processed while
being
in
record mode. If the sound event is sent with a higher sampling frequency than
the actual
sampling frequency of the
recording process, the device is switched to the higher sampling frequency.
This
results in a sudden drop of the pitch frequency during playback of the
recording.
The
solution is to allow only one single sampling frequency of 22050Hz in the device.
- Full
Duplex Mode
This
firmware enables the full duplex capability.
This
enables to use the SpeechMike in Mac environments and
in Citrix XenApp 5.0 with Windows
2008 server environments.
Due to
hardware restrictions, full duplex is only possible if
both audio interfaces (microphone and speaker) use the same
sampling rate.
Please note: Full duplex enables to
play back sound through
the SpeechMike speaker during dictation. This might distort
your recordings. To avoid that, please make sure that
other applications do not play back sound during dictation
(e.g. email notification).
Note: After FW updated you may get following error
massage
None of
the available sound input devices are suitable for this program
Compared
to older firmware releases, SpeechMike II FW v1.23 & v1.25 have been released
with a fixed recording sample rate of 22kHz. This was
necessary to ensure full compatibility with Windows Vista operating systems.
However, we discovered that Windows XP does not properly query the device
firmware on the SpeechMike for supported recording sample rates, which can
potentially cause the same error message.
Solution:
1.
Please navigate to your Windows Device Manager and browse to "Universal
serial bus controllers".
The driver will be reinstalled automatically and the SpeechMike should work
fine again.
V1.23 technical release canditate
2009-06-10
Following issue is solved:
Sampling frequency changes during recording when a
windows system sound event occurs
Up till now
SpeechMikeII supports multiple frequencies in record
and playback.
Being a
full duplex device, it is possible that a playback request is processed while
being
in
record mode. If the sound event is sent with a higher sampling frequency than
the actual
sampling frequency of the
recording process, the device is switched to the higher sampling frequency.
This
results in a sudden drop of the pitch frequency during playback of the
recording.
The
solution is to allow only one single sampling frequency of 22050Hz in the
device.
- ‘Fake’
Half Duplex Mode:
Though the
device stays in full duplex mode, the LS-amplifier is muted
during recording (microphone is
active). This will suppress distortions
by e.g. system notifications during recording.
Note: After
FW updated you may get following error massage
None of
the available sound input devices are suitable for this program
Compared
to older firmware releases, SpeechMike II FW v1.23 & v1.25 have been released
with a fixed recording sample rate of 22kHz. This was
necessary to ensure full compatibility with Windows Vista operating systems.
However, we discovered that Windows XP does not properly query the device
firmware on the SpeechMike for supported recording sample rates, which can
potentially cause the same error message.
Solution:
1.
Please navigate to your Windows Device Manager and browse to "Universal
serial bus controllers".
The driver will be reinstalled automatically and the SpeechMike should work
fine again.
V1.20 technical Beta release 2008-04-14
Improvements:
- Trick the
Screensaver
During
playback or recording the SpeechMike moves the mouse cursor
every
30s one pixel to the right/left.
This
prevents the screensaver from starting if the user dictates
for a long time without moving the mouse.
- Full
Duplex Mode
This
firmware enables the full duplex capability.
This
enables to use the SpeechMike in Mac environments and
in Citrix XenApp 5.0 with Windows
2008 server environments.
Due to
hardware restrictions, full duplex is only possible if
both audio interfaces (microphone and speaker) use the same
sampling rate.
Please note: Full duplex enables to
play back sound through
the SpeechMike speaker during dictation. This might distort
your recordings. To avoid that, please make sure that
other applications do not play back sound during dictation
(e.g. email notification).
V1.18 technical release 2007-05-21
Following issues are solved:
- No recording/playback after reboot
Some
SpeechMikes have no record and playback functionality if
connected to the PC during booting. Mouse and button
functions
are working. Unplugging and replugging
the SpeechMike
did
cure the problem.
So far this
behaviour could be observed only on PCs running with
Windows
Vista but theoretically it could happen on different
operating
systems also.
Only
special SpeechMike-PC combinations will show this behaviour.
A
SpeechMike having this problem may work perfect on a different PC.
A PC having
this problem may work perfect with a different SpeechMike.
V1.17 technical release 2007-03-15
Improvements:
- Improved slider handling
Previous
versions reported wrong slider events under rare conditions.
e.g.: even
if the slider has been moved only between STOP and PLAY,
the device has reported a FFWD event, causing the PC to exit
record standby mode.
V1.16 technical release 2006-12-01
Improvements:
- Linux Compatibility
Improved Linux
compatibility.
V1.15 technical release 2006-08-06
Improvements:
- Linux Compatibility
This firmware is Linux compatible.
V1.14 technical release 2006-07-06
Improvements:
- Auto Upgrade Mode
This firmware can be set to upgrade mode via
a software command.
Following issues are solved:
- Fast slider movement
Very fast slider movements are missed by the
firmware under rare
conditions. e.g.: slider is moved very fast, and stopped in
PLAY
position
but SpeechExec is still in STOP position.
V1.12 technical release 2006-03-30
Following issues are solved:
- Disabling the trackball
Disabling the trackball via the Device
Configuration Tool caused the
mouse pointer to move rapidly to a corner of the PC screen
after
PC boot or
attaching the device.
V1.09 technical release 2005-12-21
Improvements:
- Windows Audio Mixer Control
The microphone gain adjustment via the
Windows Audio mixer control is
implemented
as a linear slider. In a typical office environment this
slider
is set somewhere in the lower third of the audio mixer control.
To enable finer adjustment in this lower third
the slider behavior has
been
changed.
- Adjustable trackball sensitivity
The trackball sensitivity is now adjustable
in 4 steps:
a) Default
sensitivity
b) sensitivity / 2
c)
sensitivity / 3
d)
sensitivity / 4
Note: The
sensitivity settings are automatically changed to setting b) when
new
settings are transfered to the SpeechMike with the
Device Configuration
Tool V2.3
Build 100
Following issues are solved:
- PC freezes while booting
If a SpeechMike
II is connected via the SpeechExec Dongle to the PC some
computers
freeze during the boot process. This firmware version corrects
this
behavior.
Software restrictions:
Attaching more than one Philips Speech Processing USB
device may cause the
serial number
programming tool to malfunction. Upon detection of more than
one USB device
the tool will display following error message:
Connected device: 2 devices connected
Please make sure only the desired device is attached.
The SpeechMikeII Device Configuration
Tool does not support multiple attached
SpeechMikeII
devices with different types (e.g.: LFH5260 and LFH5270). The tool
displays the
message Connected device: Different devices connected in this
case. Please make
sure to connect only devices with the same LFH-number.
V1.07 technical release 2005-10-03
- Audio device not working after PC boot
The audio
interfaces of the SMike II might not work if they are
not used
immediately after system start up (if SMike
II is connected during PC boot,
or if SMike II is connected when
PC is already running). The Device Manager
will not detect this error and still displays “the device is
working
properly”.
V1.06 technical release 2005-09-22
- Audio device freezes if used by two applications
If two
applications are using the SMike II as sound input
and output
device, the audio interfaces of the SMike
II could crash. The audio
function is not accessible anymore afterwards.
- Recording interrupted when moving the
scroll wheel
When moving the
scroll wheel in record mode the recording was interrupted.
If muting has been enabled the initial
firmware version has muted the
microphone signal when moving the scroll wheel. Since the
scroll wheel
movement produces no audible sound, scroll wheel muting has
been disabled.
- SpeechExec freezes if buttons are pressed
Pressing of SMike
II buttons during the start up process of Speech
Exec caused
the SMike II and subsequently Speech Exec to hang.
V1.03 technical release 2005-09-07
- this is the initial version