
                   IBM Multimedia Presentation Manager/2
                            Speaker Audio DD
                               Version 1.1
           (C) Copyright IBM Corp. 1991, 1993  All Rights Reserved.
                     IBM is a registered trademark of the
                 International Business Machines Corporation
   U.S. Government Users Restricted Rights - Use, duplication or disclosure
            restricted by GSA ADP Schedule Contract with IBM Corp.

Introduction

   The Speaker audio device driver provide support for playing digital
   audio waveform files on the standard PC speaker by using the
   MMPM/2 audio system.   This support is important because it allows
   non-multimedia enabled systems to play short sound effects and other
   short digitized sound through the PC speaker.

   The speaker driver provides support for PCM waveform files that
   are (8-bit/16-bit, stereo/mono, 11Khz-44khz).

   This driver is intended for use under OS/2 2.1 or greater.

   The quality of sound produced from the speaker device is low
   compared to a real audio card, and will vary from machine to
   machine.

Caveat

   The standard PC speaker was not intended to play digitized waveform
   sound.  In order to produce a reasonable approximation of the
   sound contained in .WAV files, the device driver requires
   exclusive use of the CPU for an extended period of time.  This
   may have undersirable effects on performance critical multitasking
   such as communications, modem transfers, networking, etc.
   We do not recommend that this software be used in conjunction with
   communications software, time critical, or mission critical application.
   This may include printing and mouse operation during sound generation.

   If you experience problems, you should discontinue use of the
   speaker device driver.

   Interrupts are enabled while the speaker is being operated, however
   multitasking operation is suspended.

License

   IBM grants the right to use, reproduce, and distribute this
   speaker driver software provided that (1) it is not distributed for
   profit, (2) it is used only with licensed copies of OS/2 2.1,
   (3) the software is not modified, (4) all copyright notices
   remain with the software, (5) the end user agrees to the license.

   This speaker driver is provided in 'as is' condition without
   warranty of any kind and no support will be provided.

   IBM and its vendors takes no responibility and is not liable for
   any consequences or damages of any kind resulting from the
   use or existence of this software.

   IBM does not guarantee that the speaker driver software will run
   on all machines.  IBM is not obligated to provide any updates to
   this software.

Installation

   1) Install the MMPM/2 base.  The MINSTALL program requires you
      to select one of the subsystems in order to do an install.  If
      you don't already have a audio card, or CD-ROM, then you
      can select Software Motion Video which doesn't require any special
      hardware other than the monitor.

      Reboot after this installation.

   2) Place the files from the SPKRDD package into a subdirectory (i.e. \spkrdd)

   3) Use the MINSTALL installation program from the MMPM/2 folder to
      select the \spkrdd directory.  Install the Speaker Driver
      package by selecting the speaker driver object and pressing Install.

   4) After install is complete, a reboot is required.

Configuration

   The speed and volume of the sound produced by the speaker device
   driver must be configured on a machine by machine basis.

   1) Select the Multimedia Setup program in the MMPM/2 folder.

   2) Select the speaker settings page, to customize the speed and
      volume of speaker.  The speaker push button will place a test
      sound, that will give you some feedback on the speed and volume
      adjustments.

Uninstall

   If you experience problems with the speaker device driver and wish to
   un-install it.

   1) Edit you config.sys, and comment out the device driver line:

      REM DEVICE=D:\MMOS2\SPKRDD.SYS

   2) Edit MMPM2.INI and remove PCSPEAKER and SPKRDDAMP and any references
      to these names.

Notes:

   1) If you install only Software Motion Video support, and then the speaker
      device driver,  the Software Motion Video support will run without
      audio support. This is preferable, since both software video and
      the speaker driver compete for the CPU.

      If however you want to try, running them both together, the
      MMPM2.INI can be updated as follows.  This will also cause the
      audio and video to be out of sync.

      [ibmdigvidplayer01]
         CONNECTORS=1,3,SPKRDDAMP,1

   2) The system sounds support, for which the speaker driver is intended for,
      will be installed automatically by the install of MMPM/2 base.  System
      sounds plays on the default device.  If you install support for
      another audio card first, then install the speaker device driver, the
      other audio card will be the default.  The default can be changed
      in the Multimedia Setup Program.


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