@E401.ADF "IBM VoiceType Dictation Adapter/A"
MLC.DGS VoiceType Dictation Adapter/A Diagnostics
vtdopts1.exe VoiceType Dictation Option
Diskette Ver 1.10 No device drivers!
193-341 IBM Personal Dictation Adapters
194-388 Withdrawal: IBM Personal Dictation Adapters
194-394 IBM VoiceType Dictation Adapters and Microphone
195-267 IBM VoiceType Microphone Cancels Ambient Noise
294-700 IBM VoiceType Dictation for OS/2 Version 1.1
294-702 IBM VoiceType Dictation for Windows Version 1.1
295-470 VoiceType Dictation for Windows 1.32 Recognizes Speech Quickly, Accurately
296-202 VoiceType Dictation Version 3.0 for Windows 95
EPRM IBM Voicetype Dictation Adapter
W95 WAVE Driver
"Wave-Out", "Wave-In", "Auxiliary" and "Mixer" devices for W95.
At this point, I don't know if these are stand-alone.
vtd132a.exe Voicetype Dictation upgrade to ver 1.32a
runawayo.exe VoiceType Dictation System Run-Away fix for OS/2
speechdd.exe Revised OS/2 driver for VTD Ver 1.11
runawayw.exe VoiceType Dictation System Run-Away fix for Windows
VDATSR.EXE Force IRQs for PCMCIA VoiceType for Windows
J Two empty through holes
J3 "L" line input
J2 "M" mic
J4 "O" speaker
J1 "S" not currently used?
R Rework Added identical cap in parallel
U1-5 NEC 424400-60L
U6 AD1848KP SoundPort
U7 61F3516 Blue DSP
U8-U11 Micron 7811
U13 64G5059 Altera FPGA?
U19 Hitachi HN58C66FP-25T
U24-27 Micron 3427
Y1 25.0000 MHz osc
Y2 16.934 MHz XTAL2
Y3 24.576 MHz XTAL1
Note: The output
ports are in order, from top to bottom, J3, J4, J2, J1.
Why, I dunno.
Line input is used for amplified audio source, like a
J is marked
"Jumper" and has two empty through holes for a 2 pin
header. It straddles the split between the Digital
Ground Plane (left half) and the Analog Ground Plane
(right half) of the AD1848KP.
J4 Output - speaker
uses a 3.5 mm jack (monaural or stereo)
J1 Sense Input -
Intended for sensing the position of an external switch,
for example, a microphone with remote control. May not
For information on microphone selection, refer
294-700, dated November 8, 1994 (for
294-702, dated November 8, 1994 (for
LM324AD Operational Amplifier, Quad AMP, Bipolar Datasheet
HN58C66FP-25T 8Kx8 EEPROM Datasheet
33072 High-Slew-Rate, Single-Supply Operational Amplifier
NEC 424400-60L 1Mx4 DRAM Datasheet
HM514400BS6 1Mx4 DRAM
R - SMD capacitor glued to AD1848KP is a polarized 10uF
20v and so is C138.
Parallel-Port 16-Bit SoundPort Stereo Codec Datasheet
AD1848 Preliminary Datasheet
The VoiceType Dictation Adapters are uniquely designed
for computational and memory-efficient speech processing
that otherwise would be handled by the main processor in
the PC. With memory for speech processing, the adapters
enable highly accurate, real-time speech recognition to
operate on PCs with 486 processors at speeds as slow as
To support the intense, computational aspects of speech
recognition, the VoiceType Dictation Adapters
incorporate a digital signal processor (DSP). The DSP is
rated at 25 MIPs with a 16-bit wide, external memory
data path, a 16 x 16 multiplier, and a 32-bit arithmetic
logic unit (ALU). Data transfers, multiplication, and
ALU operations are independent and all can be active
during every instruction cycle. In addition to the DSP,
special processing hardware is included on the adapter
to handle arithmetic intensive operations.
The VoiceType Dictation Adapters also include separate
instruction and data memories. The adapters have static
RAM and over 1MB of dynamic RAM directly addressed
by the DSP. A parallel interface bus provides the
processor with high bandwidth access to memory without
affecting DSP computation.
VoiceType Microphone Option
The VoiceType Microphone Option without Battery Box
(30H2445) is for sound cards that provide sufficient
power to operate microphone. Example is the Sound
Blaster** 16 Card.
The VoiceType Microphone Option with Battery Box
(30H2343) provides external power to the microphone and
should be used with all sound cards that do not have
sufficient power to operate the microphone. Part number
30H2343 should also be used in cases where the user is
unsure of the sound card's capability to provide the
The battery box for 30H2343 requires two user-supplied
batteries that are not shipped as part of the product.
The expected battery life is 500 plus hours of use.
Andrea Electronics was the manufacturer of the
microphones included with the VoiceType adapters. Andrea
Whitepaper Andrea Active Noise Cancellation (ANC)
ANC versus NC Microphone
Active Noise Cancellation (ANC) is better. It is a dual
element microphone system that electronically cancels
background noise by creating a signal that is 180 degrees
out-of-phase to the noise while amplifying the user’s
voice signal. A lower-priced alternative to ANC is NC
microphone technology, which is based on passive noise
cancellation principles in a single microphone element
My monaural headset doesn't
seem to fit over my entire head. Is this right?
Andrea monaural headsets were designed so that the ear
pad rests on one ear and the temple pad rests on your
opposite temple, approximately two inches above the
other ear. If this style is not comfortable, consider a
stereo design, such as an Andrea NC-65, ANC-550, ANC-650
or ANC-750, which rest comfortably over both ears.
What sound cards require the
APS-100, auxiliary power supply?
ANC-500 PC Microphone Headset
Sound cards and laptops without sufficient power in the
microphone port of the PC sound card will require the
APS-100. Simply check the documentation with your sound
card to determine if it has the necessary power. ANC
microphones require a minimum of 2.25 volts and NC
microphones require a minimum of 1.25 volts.
Ultralight, monaural active noise cancellation microphone
headset with ON/OFF mic mute switch. Headset folds
completely flat for traveling. IBM recommends this
microphone for use with IBM VoiceType Products.
NC-50 PC Microphone Headset C1-1002600-2
Monaural, Noise-Canceling PC Headset Ultralight. IBM
recommends this microphone for use with IBM VoiceType
APS 100 Auxiliary Power Supply
/ Battery Power Supply C96-1002000
Some sound cards and laptops without sufficient power in
mic port will require a battery power supply.
ISA-Bus Adapter Jumper Settings
Factory (default) Settings
| Address Setting | Interrupt Setting |
|1st 2nd 3rd 1st 2nd 3rd |
|position position position position position position |
| . . . . . . |Top
| .] . . . . .] |
| . .] .] . . . |Bottom
(I/O address h800) (IRQ 10)
ISA Address / Interrupt Selection Jumper
|IRQ 10 *)
IBM Personal Dictation Adapter FRU 71G6641 / PN 70G8976 ISA
IBM Personal Dictation Adapter/A FRU 71G6642 / PN 70G8977 MCA
IBM VoiceType(TM) Dictation ISA Adapter 89G3000
IBM VoiceType Dictation Micro Channel Adapter 89G3004
VoiceType Dictation PCMCIA Adapter FRU 89G2846 / PN 89G2854
PCMCIA ext. Jack Box FRU 89G2848
VoiceType Dictation Version 3.0 for Windows 95
VoiceType Dictation for Windows, Version 1.32 Win3.1x/95
VoiceType Dictation for OS/2(R), Version 1.1
ADF Sections @E401h "IBM
VoiceType Dictation Adapter/A"
Base address can be at one of 8 locations.
Choose one which does not conflict.
- 00083Fh>, "2800 - 283F", "4800 - 483F",
"6800 - 683F", "8800 - 883F", "A800 - A83F", "C800 -
C83F", "E800 - E83F"
Minimize amount of interrupt sharing by
assigning other boards to different levels.