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The Microsoft Speech SDK 5.1 adds Automation support to the features of the previous version of the Speech SDK. You can now use the Win32 Speech API (SAPI) to develop speech applications with Visual Basic ®, ECMAScript and other Automation languages.

• The Microsoft Speech SDK 5.1 adds Automation support to the features of the previous version of the Speech SDK. You can now use the Win32 Speech API (SAPI) to develop speech applications with Visual Basic ®, ECMAScript and other Automation languages. The SDK also includes freely distributable text-to-speech (TTS) engines (in U.S. English and Simplified Chinese) and speech recognition (SR) engines (in U.S. English, Simplified Chinese, and Japanese).

Files

Status: Live This download is still available on microsoft.com. The downloads below will come directly from the Microsoft Download Center.

File	SHA1 Hash	Size
msttss22L.exe	e5e6034293463ddbf5bc64671bf44491a4bf4642	1.93 MB
sapi.chm	db3ad869620ab7ceb34f3d18e030bdaf348da5b4	2.24 MB
Sp5TTIntXP.exe	d2bb621b328a02acaf1267f6479086184cb995de	3.47 MB
SpeechSDK51.exe	f69efaee8eb47f8c7863693e8b8265a3c12c4f51	67.97 MB
SpeechSDK51LangPack.exe	1b5e6aa38c8c1827293e0b565a1f59f02a3d9f4c	81.54 MB
SpeechSDK51MSM.exe	482a48d3a0a2ad5ed9f084d65c010b0b16c1b027	131.53 MB

File sizes and hashes are retrieved from the Wayback Machine’s indexes. They may not match the latest versions of files hosted on Microsoft servers.

• • Windows XP Professional or Home Edition
  
  
  • Microsoft Windows 2000, all versions
  
  
  • Microsoft Windows Millennium Edition
  
  
  • Microsoft Windows 98, all versions
  
  
  • Microsoft Windows NT 4.0 Workstation or Server, Service Pack 6a, English, Japanese, or Simplified Chinese versions
  
  
  • Microsoft Internet Explorer ® 5.0 or later. Users of Windows NT 4.0 require Microsoft Internet Explorer 5.5 or later.
  
  
  • Microsoft Visual C++ ® 6.0 (Service Pack 3 or later version is needed to run the SAPI 5 SDK samples)
  
  
  • Microsoft Visual Studio.NET is required to compile the C# examples

• 1. Click the file you want to download from the list below.
  2. Do one of the following:
  • To start the installation immediately, click Open or Run this program from its current location.
  • To copy the download to your computer for installation at a later time, click Save or Save this program to disk.
  
  
  Important File Download Details
  
  • If you want to download sample code, documentation, SAPI, and the U.S. English Speech engines for development purposes, download the Speech SDK 5.1 file (SpeechSDK51.exe).
  
  
  • If you want to use the Japanese and Simplified Chinese engines for development purposes, download the Speech SDK 5.1 Language Pack file (SpeechSDK51LangPack.exe) in addition to the Speech SDK 5.1 file.
  
  
  • If you want to redistribute the Speech API and/or the Speech engines to integrate and ship as a part of your product, download the Speech 5.1 SDK Redistributables file (SpeechSDK51MSM.exe).
  
  
  • If you want to get only the Mike and Mary voices redistributable for Windows XP, download Mike and Mary redistributables (Sp5TTIntXP.exe).
  
  
  • If you only want the documentation, download the Documentation file (sapi.chm).