![]() No-one uses it nowadays (this is almost certainly untrue, but as a general rule, it’s all SAPI5 now.) There was a SAPI4, which was the predecessor to SAPI5, and shipped in Windows 2000 and as part of Microsoft Agent.You can more rarely find per-user installation of SAPI5 voices in HKEY_CURRENT_USER > Software > Microsoft > Speech. ![]() You can find the installed voices in the registry, under HKEY_LOCAL_MACHINE > Software > Microsoft > Speech, or if you are on a 64-bit machine, both that key and in HKEY_LOCAL_MACHINE > Software > WOW6432Node > Microsoft > Speech for the 32-bit voices.Also, 64-bit programs won’t see or be able to use 32-bit-only SAPI5 voices. You have to find and run C:\Windows\SysWOW64\Speech\SpeechUX\sapi.cpl to see 32-bit voices. If you’re on a 64-bit Windows machine, 32-bit voices won’t show up in the Speech window in Control Panel, because it is a 64-bit version of the Speech window. Voices can be either 32-bit or 64-bit, just like Windows.List of free SAPI5 voices on Windows 8 and Windows 10 For example, if you install the French language pack, you get a French SAPI5 voice that appears in Control Panel and can be used in software that supports SAPI5. Language Packs are all free for Windows 8 and later (and mostly free for Windows Vista and 7 too) and some of them come with SAPI5 voices. You can also get new SAPI5 voices from Microsoft by installing a new Language Pack from Control Panel.You can get lots and lots of SAPI5 voices from third parties, including the free eSpeak.Acapela voices) but the ones you can see there can generally work in any program that uses SAPI5: You are looking for the Text to Speech window, which is hidden away in the Speech Recognition settings in Control Panel. You can find SAPI5 voices that are installed on your machine in the Control Panel.Microsoft Sam in Windows XP, Microsoft Anna in Windows Vista and 7, Microsoft Hazel in Windows 8 and 10. The default Windows Voices have been SAPI5 since Windows XP.It’s got a huge range of voices from third parties like Acapela, Nuance, Cereproc and Ivona. SAPI5, Microsoft Speech API version 5 ()įrom Windows XP onwards, this is the main Windows speech system for desktop applications, like screenreaders. The three systems are SAPI5, Microsoft Speech Server, and the new system for Windows 10, the variously-named Windows Runtime or Bing or Mobile system. Here, then, is a description of Microsoft speech systems on desktop Windows as of November 2016, mainly for developers and enthusiasts. Windows 10 has made more changes, and the MSDN documentation is fragmented and confusing. Microsoft Windows has had a number of speech systems over the years.
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