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csharp: Speech

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<!-- Copyright @ 2001 Microsoft Corporation All Rights Reserved. -->
<HTML>
<HEAD>
<META HTTP-EQUIV="Content-Type" content="text/html; charset=UTF-8">
<TITLE>TTS Demo</TITLE>

<SCRIPT LANGUAGE="JavaScript">

// Create the Sapi SpVoice object
var VoiceObj = new ActiveXObject("Sapi.SpVoice");

// ChangeVoice() function:
// 		This function sets the newly selected voice choice from the Voice
//		Select box on the Voice object.
function ChangeVoice() {
var i = parseInt( idsVoices.value );
VoiceObj.Voice = VoiceObj.GetVoices().Item(i);
}

// ChangeAudioOutput() function:
//		This function sets the newly selected audio output choice from the
//		Audio Output Select box on the Voice object.
function ChangeAudioOutput() {
var i = parseInt( idsAudioOutputs.value );
VoiceObj.AudioOutput = VoiceObj.GetAudioOutputs().Item(i);
}

// IncRate() function:
//		This function increases the speaking rate by 1 up to a maximum
//		of 10.
function IncRate() {
if( VoiceObj.Rate < 10 )
{
VoiceObj.Rate = VoiceObj.Rate + 1;
}
}

// DecRate() function:
//		This function decreases the speaking rate by -1 down to a minimum
//		of -10.
function DecRate() {
if( VoiceObj.Rate > -10 )
{
VoiceObj.Rate = VoiceObj.Rate - 1;
}
}

// IncVol() function:
//		This function increases the speaking volume by 10 up to a maximum
//		of 100.
function IncVol() {
if( VoiceObj.Volume < 100 )
{
VoiceObj.Volume = VoiceObj.Volume + 10;
}
}

// DecVol() function:
//		This function decreases the speaking volume by -10 down to a minimum
//		of 0.
function DecVol() {
if( VoiceObj.Volume > 9 )
{
VoiceObj.Volume = VoiceObj.Volume - 10;
}
}

// SpeakText() function:
//		This function gets the text from the textbox and sends it to the
//		Voice object's Speak() function. The value "1" for the second
//      		parameter corresponds to the SVSFlagsAsync value in the SpeechVoiceSpeakFlags
//		enumerated type.
function SpeakText() {
if( idbSpeakText.value == "SpeakText" )
{
// Speak the string in the edit box
try
{
VoiceObj.Speak( idTextBox.value, 1 );
}
catch(exception)
{
alert("Speak error");
}
}
else if( idbSpeakText.value == "Stop" )
{
// Speak empty string to Stop current speaking. The value "2" for
// the second parameter corresponds to the SVSFPurgeBeforeSpeak
// value in the SpeechVoiceSpeakFlags enumerated type.
VoiceObj.Speak( "", 2 );
}
}

</SCRIPT>

<SCRIPT FOR="window" EVENT="OnQuit()" LANGUAGE="JavaScript">
// Clean up voice object
delete VoiceObj;
</SCRIPT>

</HEAD>

<BODY>
<H1 align=center>Simple TTS (DHTML)</H1>
<H1 align=center><FONT size=3>        </FONT>
<IMG alt="" border=2 hspace=0 id=idImage src="mouthclo.bmp">  </H1>
<H1 align=center>
<TEXTAREA ID=idTextBox COLS=50 ROWS=10 WRAP=VIRTUAL>Enter text you wish spoken here</TEXTAREA>
</H1>

<P align=center><STRONG><STRONG>
Rate <STRONG>
<INPUT id=idbIncRate name=button1 type=button onclick=IncRate() value="    +    "></STRONG>
<INPUT id=idbDecRate name=button2 type=button onclick=DecRate() value="    -    " style="LEFT: 237px; TOP: 292px">     </STRONG>

Volume <STRONG><STRONG>
<INPUT id=idbIncVol name=button3 onclick=IncVol() style="LEFT: 67px; TOP: 318px" type=button value="    +    ">
<INPUT id=idbDecVol name=button4 onclick=DecVol() type=button value="    -    " style="LEFT: 134px; TOP: 377px">
</STRONG></STRONG></STRONG></P>

<P align=center><STRONG><BUTTON id=idbSpeakText onclick=SpeakText();
style="HEIGHT: 24px; LEFT: 363px; TOP: 332px; WIDTH: 178px">SpeakText</BUTTON></STRONG></P>

<P align=center><STRONG>Voice
<STRONG>Audio Output </STRONG></STRONG></P>
<P align=center>

<SELECT id=idsVoices name=Voices onchange=ChangeVoice() style="FONT-FAMILY: serif; HEIGHT: 21px; WIDTH: 179px"> </SELECT>

<SELECT id=idsAudioOutputs name=AudioOutputs onchange=ChangeAudioOutput() style="HEIGHT: 22px; WIDTH: 179px">  </SELECT>

<SCRIPT LANGUAGE="JavaScript">
// Code in the BODY of the webpage is used to initialize controls and
// to handle SAPI events

/***** Initializer code *****/
InitializeControls();

function InitializeControls()
{
// Initialize the Voices and AudioOutput Select boxes
var VoicesToken = VoiceObj.GetVoices();
var AudioOutputsToken = VoiceObj.GetAudioOutputs();

// Add correct strings to Voice Select box
for( var i=0; i<VoicesToken.Count; i++ )
{
var oOption = document.createElement("OPTION");
idsVoices.options.add(oOption);
oOption.innerText = VoicesToken.Item(i).GetDescription();
oOption.value = i;
}

// Add correct strings to Audio Output Select box
for( var i=0; i<AudioOutputsToken.Count; i++ )
{
var oOption = document.createElement("OPTION");
idsAudioOutputs.options.add(oOption);
oOption.innerText = AudioOutputsToken.Item(i).GetDescription();
oOption.value = i;
}
}

/***** Event handling code *****/
// These functions are used to handle the SAPI events

// Handle StartStream event
function VoiceObj::StartStream() {
idbSpeakText.value = "Stop";
}

// Handle EndStream event
function VoiceObj::EndStream() {
idbSpeakText.value = "SpeakText";
idImage.src = "mouthclo.bmp";
}

// Handle Viseme event
function VoiceObj::Viseme(StreamNum, StreamPos, Duration, VisemeType, Feature, VisemeId) {
// Map the VisemeId to the appropriate .bmp
if( VisemeId == 15 || VisemeId == 17 || VisemeId == 18 || VisemeId ==21 )
{
idImage.src = "mouthop1.bmp";
}
else if( VisemeId == 14 || VisemeId == 16 || VisemeId == 19 || VisemeId == 20 )
{
idImage.src = "mouthop2.bmp";
}
else if( VisemeId == 4 || VisemeId == 6 || VisemeId == 9 || VisemeId == 12 )
{
idImage.src = "mouthop3.bmp";
}
else if( VisemeId == 1 || VisemeId == 2 || VisemeId == 3 || VisemeId == 11 )
{
idImage.src = "mouthop4.bmp";
}
else if( VisemeId == 7 || VisemeId == 8 )
{
idImage.src = "mouthnar.bmp";
}
else if( VisemeId == 5 || VisemeId == 10 || VisemeId == 13 )
{
idImage.src = "mouthmed.bmp";
}
else
{
idImage.src = "mouthclo.bmp";
}
}
</SCRIPT>

<STRONG>
<HR></STRONG>
<P></P>

</BODY>
</HTML>

private void btnSpeak_Click(object sender, System.EventArgs e)
{
//Create a TTS voice and speak.
try
{
SpeechVoiceSpeakFlags SpFlags = SpeechVoiceSpeakFlags.SVSFlagsAsync;
SpVoice Voice = new SpVoice();
if (chkSaveToWavFile.Checked)
{
SaveFileDialog sfd = new SaveFileDialog();

sfd.Filter = "All files (*.*)|*.*|wav files (*.wav)|*.wav";
sfd.Title = "Save to a wave file";
sfd.FilterIndex = 2;
sfd.RestoreDirectory = true;

if (sfd.ShowDialog()== DialogResult.OK)
{

SpeechStreamFileMode SpFileMode = SpeechStreamFileMode.SSFMCreateForWrite;

SpFileStream SpFileStream = new SpFileStream();
SpFileStream.Open(sfd.FileName, SpFileMode, false);

Voice.AudioOutputStream = SpFileStream;
Voice.Speak(txtSpeakText.Text, SpFlags);
Voice.WaitUntilDone(Timeout.Infinite);

SpFileStream.Close();

}
}
else
{
Voice.Speak(txtSpeakText.Text, SpFlags);
}
}
catch(Exception error)
{
MessageBox.Show("Speak error", "SimpleTTS", MessageBoxButtons.OK, MessageBoxIcon.Error);
}

}

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