![]() ![]() The value of both of these attributes should be an integer between negative ten and ten. The Pitch tag has two attributes, Middle and AbsMiddle, one of which must be present. The tag can be empty, in which case it applies to all subsequent text, or it can have content, in which case it only applies to that content. The Pitch tag controls the pitch of a voice. Values specified using the Rate tag will be combined with values specified programmatically (using ISpVoice::SetRate). Zero represents the default rate of a voice, with positive values being faster and negative values being slower. The absolute value is found by adding each Speed to the current absolute value. The Speed attribute controls the relative rate of the voice. This text should be spoken at rate negative five.Īll text which follows should be spoken at rate ten. The AbsSpeed attribute controls the absolute rate of the voice, so a value of ten always corresponds to a value of ten, a value of five always corresponds to a value of five. ![]() Values outside of this range may be truncated by the engine (but are not truncated by SAPI). The Rate tag has two attributes, Speed and AbsSpeed, one of which must be present. The Rate tag controls the rate of a voice. For example, if you combine a SetVolume( 50 ) call with a tag, the volume of the voice should be 25% of its full volume. Values specified using the Volume tag will be combined with values specified programmatically (using ISpVoice::SetVolume). That is, 50 corresponds to 50% of full volume. ![]() Lower values represent percentages of this default. One hundred represents the default volume of a voice. This text should be spoken at volume level one hundred.Īll text which follows should be spoken at volume level eighty. This text should be spoken at volume level fifty. Values outside of this range will be truncated. The value of this attribute should be an integer between zero and one hundred. The Volume tag has one required attribute: Level. The Volume tag controls the volume of a voice. SAPI TTS XML supports five tags that control the state of the current voice: Volume, Rate, Pitch, Emph, and Spell. SAPI text-to-speech (TTS) extensible markup language (XML) tags fall into several categories. Microsoft Speech API 5.3 XML TTS Tutorial SAPI XML TTS for Application Developers ![]()
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