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-
- 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.
-
-