


          {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.

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