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-
- This is a summary of information contained in Microsoft's
- Knowledge Base article ID: Q141801
-
- Troubleshooting Audio CODECS in Windows 95
-
- Missing CODECS
-
- Windows 95 includes 32-bit versions of several common CODECS. These
- 32-bit CODECS are installed by default during Windows 95 Setup when
- a sound card is installed in the computer, and are used by multimedia
- programs even if a 16-bit version of the same codec is available.
-
- To verify that the 32-bit CODECS included with Windows 95 are
- installed, follow these steps:
-
- 1. In Control Panel, double-click Add/Remove Programs.
- 2. Click the Windows Setup tab.
- 3. Click Multimedia, and then click Details.
- 4. Verify that the Audio Compression check box is selected. If it
- is not selected, click the check box to select it, and then click
- OK.
-
- PhoneFree uses the following 32-bit CODECS included with Windows 95:
-
- DSP Group Truespeech Software
- Microsoft Groupe Special Mobile (GSM) 6.10
-
- You can verify that these codecs are installed by following these
- steps:
-
- 1. In Control Panel, double-click Multimedia.
- 2. Click the Advanced tab.
- 3. Double-click the Audio Compression CODECS branch to expand it.
-
- If the codec used to compress the file is not listed, install that
- codec using the Add New Hardware tool in Control Panel. To do so,
- follow these steps:
-
- 1. In Control Panel, double-click Add New Hardware.
- 2. Click Next, click No, and then click Next.
- 3. Click Sound, Video, And Game Controllers, and then click Next.
- 4. To install the GSM 6.10 CODEC, click Microsoft Audio CODECS in the
- Manufacturers box, and then click the GSM entry in the Models box.
- To install the DSP Group Truespeech Software codec, click DSP Group
- in the Manufacturers box, and then click TrueSpeech(TM) Software
- CODEC in the Models box.
- 5. Click Next, and then click Finish.
-
- Disabled or Damaged CODECS
-
- If you still cannot play a particular .wav file after verifying that the
- codec used to compress the file is installed, the codec may be disabled
- or damaged. To verify that a particular codec is enabled, follow these
- steps:
-
- 1. In Control Panel, double-click Multimedia.
- 2. Click the Advanced tab.
- 3. Double-click the Audio Compression CODECS branch to expand it.
- 4. Click the codec used to compress the file that you are attempting
- to play, and then click Properties.
- 5. Verify that the Use This Audio Codec option is selected.
-
- To ensure that you are not using a damaged codec, follow these steps to
- reinstall a codec:
-
- 1. In Control Panel, double-click Multimedia.
- 2. Click the Advanced tab.
- 3. Double-click the Audio Compression CODECS branch to expand it.
- 4. Click the codec used to compress the file that you are attempting to
- play, and then click Properties.
- 5. Click Remove, and then click Yes.
- 6. Restart your computer.
- 7. In Control Panel, double-click Add New Hardware.
- 8. Click Next, click No, and then click Next.
- 9. Click Sound, Video, And Game Controllers, and then click Next.
-
- Install the codec used to compress the file that you are attempting to
- play. To install the GSM 6.10 CODEC, click Microsoft Audio CODECS
- in the Manufacturers box, and then click the GSM entry in the Models
- box. To install the DSP Group Truespeech Software codec, click DSP
- Group in the Manufacturers box, and then click TrueSpeech(TM) Software
- CODEC in the Models box.
-
- Click Next, and then click Finish.
-
- Conflicts Between 16-Bit and 32-Bit CODECS
-
- If the 32-bit version of an audio codec that Windows 95 needs to play
- a particular .wav file is not installed or is disabled, Windows 95 uses
- the 16-bit version of the codec if it is available. If the 32-bit version
- of the codec is installed, Windows 95 uses this version by default. However,
- you may experience problems when both the 16-bit and 32-bit versions of a
- particular codec are installed.
-
- The following 16-bit audio CODECS are installed by the run-time versions of
- Microsoft Video for Windows, Microsoft Windows Sound System, and many other
- Microsoft multimedia programs:
-
- Microsoft ADPCM
- Microsoft IMA ADPCM
- DSP Group Truespeech Software
-
- These 16-bit CODECS appear in the [Drivers] section of the System.ini file,
- but do not appear when you double-click the Multimedia icon in Control Panel,
- click the Advanced tab, and then expand the Audio Compression CODECS branch
- of the Multimedia Drivers tree. To disable a 16-bit codec, remark or remove
- the line in the System.ini file that corresponds to that codec. After disabling
- the 16-bit version of the codec, you should reinstall the 32-bit version using
- the steps described in the "Disabled or Damaged CODECS" section above.
-
- The following lines in the System.ini file correspond to the 16-bit versions of
- the Microsoft ADPCM, Microsoft IMA ADPCM, and DSP Group Truespeech Software CODECS,
- respectively:
-
- [Drivers]
- msacm.msadpcm=msadpcm.acm
- msacm.imaadpcm=imaadpcm.acm
- msacm.trspch=ts_soft.acm
-
- If you are using a 16-bit program in Windows 95, you may want to disable the
- 32-bit version of a particular codec, instead of disabling the 16-bit version.
- To do so, follow these steps:
-
- 1. In Control Panel, double-click Multimedia.
- 2. Click the Advanced tab.
- 3. Double-click the Audio Compression CODECS branch to expand it.
- 4. Click the codec you want to disable, and then click Properties.
- 5. Click the Do Not Use This Audio Codec option to select it.
- 6. Click OK.
-
-
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