# Supported SAPI Version 5 Features (Windows 98/ME/NT/2000)

SAPI Version 5 Feature | Supported Functions
ISpTTSEngine | · Speak · Skip · GetOutputFormat · SetRate · SetVolume
Eventing | SAPI V5 required events
TTS XML Markup | · Bookmark · Silence · Spell · Pronounce · Rate · Volume · Pitch
Real Time Rate/Volume | · Real time rate change (takes effect at the beginning of the next clause) · Real time volume change
Audio State Tests | · Purge Before Speak · Speak Pause Stop · Speak Destroy
Lexicon Tests | · User lexicon test · Application lexicon test
Multiple Instance Tests | · Multiple instance test · Multiple instance with shared voice test
Emph | All functions
Phoneme & Viseme Events | All functions
PartOfSp | All functions

SAPI V5 Notes

· DECtalk Software for Windows currently supports SAPI Version 5 functions for Windows 98, Windows ME, Windows NT, and Windows 2000; not for Windows 95 or Windows CE.

· SAPI Version 5 support currently is for U.S. English only.

· The Context feature currently is not supported. DECtalk accepts the context tags but does not use them.

· Beginning with SAPI Version 5, you can use DECtalk Software inline commands in SAPI text buffers. For example, you can access a command such as [:tone 500 300] using an XML tag such as <dectalk tone 500 300>.

· You can use DECtalk Software phonemes in SAPI text buffers. For example: <dectalk phon arpa on][hx ehl ow][:phon arpa off>. With DECtalks unified phoneme set, you can specify phonemes from different languages within the context of your current language.