January 23, 1996 IBM Thinkpad Mwave DSP Patch for WAV files on Windows 95 ======================================================== This patch is intended to fix the following problem: Mwave may malfunction when playing WAV files recorded with sampling rates of exactly 11,000 Hz, 22,000 Hz, and 44,000 Hz. Symptoms include: - Mwave stops functioning after attempting to play a WAV file recorded at a sampling rate of exactly 11,000 Hz. Windows 95 is still operational, but no Mwave function is available. Windows 95 must be restarted to restore Mwave function. - Mwave plays slowly WAV files recorded at a sampling rate of exactly 22,000 Hz. Wave files recorded at the more common sampling rates of 11,025 Hz, 22,050 Hz, and 44,100 Hz are not affected. NOTE: To check the sampling rate of a WAV file in Windows 95, do the following: - View the file using Windows Explorer. - Right Click on the WAV file name. - Click on the Details tab. The Audio Format line indicates the sampling rate used to create the file. This patch is intended for limited distribution to IBM customers. It has received only limited testing before release by IBM, therefore it is suggested that any critical data on your hard drive be backed up before applying it. This patch will become obsolete with the next release of Mwave code. Patch Scope =========== This patch is intended for Mwave version 2.1 *ONLY* running under Windows 95. To confirm your Mwave version: - From Windows 95, click on Start, then Run - Type C:\MWW\MANAGER\MWLEVELS.EXE and press Enter This will display information from the MWAVE.INI file. The Mwave version information is on the line starting with "OEM=". Mwave 2.1 reads: "OEM=Mwave ThinkPad Release 2.1" NOTE: If the patch is already installed, the following line will also be displayed: "Patch1=Wave Fix for 11000 Hz Wave Play" Patch Contents ============== MWSOUND.DRV 55088 95-11-15 10:39 TPLWAVE.DLL 53488 95-11-15 10:49 TPSWAVE.DLL 53488 95-11-15 10:56 Installation Related Files ========================== INSTALL.EXE 47637 95-11-29 12:59 INSTALL.MSG 1430 95-11-29 08:42 INSTALL.DAT 146 95-11-29 13:11 README.TXT 1945 95-11-29 13:12 Patch Prerequisites =================== Mwave version 2.1 must be loaded on your computer running under Windows 95. Patch Instructions ================== 1. Remove this diskette from the diskette drive. 2. Shutdown Windows 95 and restart the computer in MS-DOS mode. (Click on Start, then Shutdown, then Restart the computer in MS-DOS Mode). 3. At the C:\ prompt, type "a:\install" . 4. Install will try to locate all of Mwave. If everthing is not found (probably because you used directory names other than the Mwave default ones, or because Mwave exists on another drive) it does not matter. The ONLY directory that has to be located is the Mwave Windows Directory (MWW). If the directory found is incorrect, then reply "no" when install asks if everthing is correct. Install will then prompt you to type in the correct pathname. 5. Type "exit" to restart Windows 95 ** END OF FILE **