System Requirements

Operating Systems

Supported operating systems are:

• Windows XP Professional or Home editions; all language versions.
• Windows.NET Server editions; all language versions.
• Microsoft Windows 2000 Professional Workstation or Server; all language versions.
• Microsoft Windows Millennium edition.
• Microsoft Windows 98 all editions.
• Microsoft Windows NT Workstation or Server 4.0, service pack 6a, English, Japanese, or Simplified Chinese edition.

Hardware Requirements

A PentiumII/PentiumII-equivalent or later processor at 233 MHz with 128 megabytes (MB) of RAM is recommended.

SAPI 5.1 can now take advantage of a computer and operating system that supports multiple processors, including all those mentioned above. Additionally, you can use SAPI 5.1 in a distributed application environment.

A microphone or some other sound input device to receive the sound is required for speech recognition. In general, the microphone should be a high quality device with noise filters built in. The speech recognition rate is directly related to the quality of the input. The recognition rate will be significantly lower or perhaps even unacceptable with a poor microphone.

Not all sound cards or sound devices are supported by SAPI 5.1, even if the operating system supports them otherwise.