Comments on: Text-To-Speech in Silverlight Using WCF

By: Nina Oukhina

Nina Oukhina — Thu, 13 May 2010 23:58:15 +0000

Dear Brian,
It is so nice that you are responding to me.
I saw this suggestion in some forum. And I did this already.
Unfortunetely, I am getting the same message.
Thank you so much any way.
I appreciate.
N.

By: Brian Lagunas

Brian Lagunas — Thu, 13 May 2010 22:07:08 +0000

SpeechSynthesizer.SetOutputToWaveFile Method requires full trust for the immediate caller. This member cannot be used by partially trusted code. For more information, see http://msdn.microsoft.com/en-us/library/8skskf63.aspx

You can also try to set the IIS Application Pools->Set Application Pools Defaults configuration for all Application Pools->Load User Profile from false to true.

Good luck.

By: Nina Oukhina

Nina Oukhina — Thu, 13 May 2010 21:02:56 +0000

Dear Brian,
I am really Sorry I did spelling mistake in your name and other words in my previous message. Sorry.
If you will be so kind and launch reference with my speech page as
http://www.mtklicensing.com:3537/
Enter some text and click button “start”.
You will see message :
——–3——– No voice installed on the system or none available with the current security settings.

This message was catched by try with number 3 ( please see a code in previous message)
It means exception happend in this line :
SpeechSynthesizer ss = null;

My server is Windows Server 2003
In internet nobody discuss problem with security and speech.
Please tell me , do you know web site, where speech as you described in article works.
If you do , could you please sent me information how properly to make publishing on a host
such speech service application.
Thank you,
Nina
P.S. Please remember, this application perfectly work inside Visual Studio.

By: Nina Oukhina

Nina Oukhina — Thu, 13 May 2010 17:08:14 +0000

Dear Drian,
Thank you for your response.
You can see may website at : http://www.mtklicensing.com:3536
I made a separate page to check only sound as : http://www.mtklicensing.com:3537
If you type some text and than make a text selection and than click button “Start Sound”
web service will work.
All texts, please see here:

C L I E N T __________________________________________
private void requestToTheServer(string text)
{
try{
uri = new Uri(Application.Current.Host.Source, “../SpeechServiceTrust.svc”);
clientSpeech = new OnlySpeech.SpeechServiceTrustClient(“CustomBinding_SpeechServiceTrust”, uri.AbsoluteUri);

clientSpeech.CreateWavStreamWCFCompleted+=new EventHandler(clientSpeech_CreateWavStreamWCFCompleted);
clientSpeech.CreateWavStreamWCFAsync(text);

}
catch (Exception ee1)
{
MessageBox.Show(“exception=” + ee1.Message);
if(ee1.InnerException!=null) MessageBox.Show(“inner=” + ee1.InnerException.Message);
}
}

void clientSpeech_CreateWavStreamWCFCompleted(object sender, SpeechService.OnlySpeech.CreateWavStreamWCFCompletedEventArgs e)
{
if (e.Result == null) MessageBox.Show(“null”);

byte[] bbs=e.Result;
char[] ccs=new char[bbs.Length];
for(int i=0;i {
ccs[i]=(char)bbs[i];
}
string resh=new string(ccs);
MessageBox.Show(resh);
// SpeechBytes = e.Result;
clientSpeech.CreateWavStreamWCFCompleted -= new EventHandler(clientSpeech_CreateWavStreamWCFCompleted);

}

S E R V E R ________________________ service method

public byte[] getSpeechStream(string text)
{
try
{
SpeechSynthesizer ss = null;
try
{
ss = new SpeechSynthesizer();
}
catch (Exception e1)
{
string mes = “”;
if (e1.InnerException != null) mes = e1.InnerException.Message;
mes += “____1______” + e1.Message;

byte[] a = System.Text.Encoding.GetEncoding(“iso-8859-1″).GetBytes(mes);
return a;
}
MemoryStream ms = new MemoryStream();
try
{
ss.SetOutputToWaveStream(ms);
}
catch (Exception e2)
{
string mes = “”;
if (e2.InnerException != null) mes = e2.InnerException.Message;
mes += “_____2_____” + e2.Message;

byte[] a = System.Text.Encoding.GetEncoding(“iso-8859-1″).GetBytes(mes);
return a;
}
ss.Speak(text);
return ms.ToArray();
}
catch (Exception ee)
{
string mes = “”;
if (ee.InnerException != null) mes = ee.InnerException.Message;
mes += “_____3_____” + ee.Message;

byte[] a = System.Text.Encoding.GetEncoding(“iso-8859-1″).GetBytes(mes);
return a;
}
}

—————————–
I really appreciate your attantion.
Thank you,
Nina

By: Brian Lagunas

Brian Lagunas — Thu, 13 May 2010 02:32:18 +0000

What is the error exactly?

By: Nina Oukhina

Nina Oukhina — Thu, 13 May 2010 00:35:39 +0000

Dear Brian,
I am working with Silverlight 3 and Visual Studio 2008 and I am using the same stuff that you are presented here.
“Speech to Text” is working perfectly, when I started my project inside Visual Studio.
BUt when I published web site on a host. Security error appears.
The reason is System.Speech has to be called only from full trust assembly.
I made strong name( sn.exe)to my assembly and put it in GAC (gacutil.exe).
But still I have error.
I was greatly appreciated ,if you can comment my situation.
Thank you,
Nina.

By: Brian Lagunas

Brian Lagunas — Sat, 27 Mar 2010 14:25:43 +0000

Yes, you must change to service endpoints in both the web.config and the ServiceReferences.ClientConfig in the Silverlight project to match your environment. I don’t know how you have your solution setup, but to avoid having to worry about cross-domain policies, place your service in the hosting web project (the project that hosts your Silverlight client).

By: simon-john roberts

simon-john roberts — Sat, 27 Mar 2010 11:19:50 +0000

Im thinking of using the core of this for a free timer im putting out in the wild.

do i need to adjust the localhost to something public therefore? and punch open a port for the service?

Many thanks.