V1.xx
is valid for LFH5260, LFH5262, LFH5270, LFH5272, LFH5274 and
LFH5276
V1.26
technical release 2011-05-19
Following
issue is solved:
-
No playback after booting of a PC running Windows7. The customer has to roll the
volume scroll wheel or move the volume control slider of the OS to activate
playback.
The reason is that
Windows 7 ( unlike Windows XP) does not send a ‘SET
VOLUME’ command through USB when it detects the device, and SpeechMike II is
muted by default.
Solution: set volume of SpeechMike II to
a default value (0x18) at start up for audible playback
V1.25
technical release 2009-07-14
Following
issue is solved:
- No
playback in certain cases
‘Fake’
half duplex mode causes the playback channel to be muted in case the microphone
channel is active.
Some applications
and even some OS activate both playback and record channels by default when they
detect a full duplex device,
thus muting
playback because of the ‘fake’ half duplex mechanism.
The
solution is not to mute playback, even when the microphone channel is
active.
V1.23
technical release 2009-07-06
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.
V1.21
technical release canditate
2009-04-17
Improvements:
- ‘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.
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