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Technotools (Chestnut CD-ROM)(1993).ISO
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!vpi.txt
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1992-07-23
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{LANtastic(TM) Voice Programmer's Interface(TM)}
Make your software laugh, sob, growl, warble, wail, sing and talk
with the LANtastic Voice(TM) Adapter and the LANtastic Voice
Programmer's Interface (VPI(TM)).
When used in conjunction with the LANtastic Voice Adapter
(soldseparately), LANtastic VPI makes adding sound and speech to
your software easy. Using a set of simple, straight-forward
commands, you can create educational and training programs on
disk or CD-ROM that actually give verbal instructions to
students. You can develop voice mail, "talking" software demos,
music synthesis, sound effects and much more. Using the tape in
and out jacks on the Voice Adapter, you can record from a CD
player, tape recorder, microphone or other external sound source,
then play back later through an amplifier with speakers.
The LANtastic VPI is a set of routines for interfacing to the
LANtastic Voice Adapter. VPI uses a structure called the Voice
Command Block (VCB). This block is similar to an NCB or MCB in
the NETBIOS. It contains pointers to blocks of data which can be
used for PLAY and RECORD. Commands can be no-wait which means
control returns to the calling program immediately while the VPI
works in the background. When the VPI command completes, the
user's POST routine is called.
The Artisoft LANtastic Voice Adapter is a low-cost, IBM
compatible expansion device which converts between audio/voice
signals and a digital data stream. When used in conjunction with
supporting software, it provides the capability to digitize
spoken messages, preserving them in nearly their original
fidelity.
LANtastic VPI is sold to developers directly through Artisoft.
For more information, call 602-293-6363.
[{Specifications}]
Hardware compatibility:
o LANtastic Voice Adapter, which is compatible with IBM PC, XT,
AT, PS/2 model 30, 30-286 and compatibles, and 386-based IBM
PC bus compatibles. The Voice Adapter requires an 8-bit
expansion slot and PC DOS 3.1 or higher (3.2 not recommended)
Basic VPI routines:
Adapter_Status Find out about the Voice adapter
Reset Reset the Voice adapter
Deinstall Takes VPI out of memory
Cancel Cancel a pending VCB
Send Sends a buffer to PLAY channel
Silence Sends silence to PLAY channel Receive Receives a buffer from RECORD channel
Threshold Wait for sound to reach a certain loudness and
then begin Receive from RECORD channel
External interfaces available on the LANtastic Voice Adapter:
o P1-Handset, electret, 0.2V peak-to-peak Standard female,
modular telephone handset jack (M4P4C). Electret
microphone input and output are supported on this connector.
Telephone handset is provided. Electret microphone input is
reproduced in the earphone as long as power is supplied to
the board to give the handset the sound of a "live" line.
o P2-LINE IN, 100K Ohms@2.5V Female, RCA-type audio jack.
Accepts a standard audio signal for digitizing from an
external source. May be connected to a CD player, tape
recorder, or other external device. This signal is mixed with
the microphone input from P1 and is reproduced in the earphone.
o P3-LINE OUT, 2.2K Ohms @1.2V Female, RCA-type audio jack.
Provides a standard line-level audio signal. May be connected
to a tape recorder or an external amplifier to record or
broadcast the output signal.