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text2speech - tts



04 Jun 2006 (Updated )

Converts text to speech.

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Any text is spoken.
Get started ...
1. add the text2speech folder to your Matlab path
2. Test your new function:
   tts('This is a test.')

Casual chat.
tts('Hi - how are you?');
tts({'Hello. How are you?','It is nice to speak to you.','regards SAPI.'})

Emphasising (only for the SAPI version*)
text2speech('You can <EMPH> emphasis </EMPH> text.');

Silence (only for the SAPI version)
text2speech('There will be silence now <SILENCE MSEC=''500''/> and speech again.');

text2speech('You can <pitch middle=''-10''/> drop the pitch.');
text2speech('But you can make it <pitch middle=''+10''/> jump as well.');

*SAPI: Speech SDK 5.1 from Microsoft

Microsoft's TTS Namespace

Microsoft's Synthesizer Class


Generate Help Files From M Files, File2str, and Str2file inspired this file.

This file inspired Generate Help Files From M Files, File2str, Str2file, and Numeric To English Words.

MATLAB release MATLAB 7.10 (R2010a)
Other requirements .NET or Microsoft SAPI (Speech SDK 5.1, Visual C++ 2005 or 2008)
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Comments and Ratings (19)
10 Dec 2014 Fernando Esteves  
07 Nov 2014 Pushkaraj Jadhav

can we add .txt file in this function so as to read whole file

08 Apr 2014 Nirav


I followed all the instructions but still get following error:

>> text2speech('Hello');
Index exceeds matrix dimensions.

Error in loadlibrary>getLoadlibraryCompilerConfiguration (line 497)
compilerConfiguration=compilerConfiguration(1); %unix machines return c and cpp compilers here

Error in loadlibrary (line 253)

Error in text2speech (line 59)


Can you please suggest what might be going wrong?


29 Jul 2013 Aswin  
22 Nov 2012 nausheen

Warning: If this is not a Windows system or the .Net class exists you will not be able to use this function.Please let me know what went wrong: wgarn@yahoo.com
> In tts at 50
i got this error

11 Oct 2011 Debejyo Chakraborty  
08 Feb 2011 grega  
02 Feb 2011 Wolfgang Garn

If you just use the "tts" function, then you should not have to download SAPI - in particular if you use Windows 7 or Vista.

31 Jan 2011 srinu

How can i store the speech output in .wav format.? Please help.

30 Jan 2011 susrutha gongalla

but we need to download the microsoft SAPI first rite..???

25 Jan 2011 Wolfgang Garn

I have observed that issue as well and provided a new function based on .NET - use "tts('Hello World')" instead of text2speech. The .NET approach is significantly easier than the previous one. Please let me know whether the "emphasise", "silence", etc. features would be useful in the new version.

30 Jun 2010 Charles

I'm running:
Matlab 7.10.0 (R2010a)
Win 7, 64bit
I get the following message upon running
??? Error using ==> loadlibrary at 480
There was an error loading the library "C:\Users\charlie\Documents\MATLAB\Sounds\text2speech\wgText2Speech.dll"
C:\Users\charlie\Documents\MATLAB\Sounds\text2speech\wgText2Speech.dll is not a valid Win32 application.

Error in ==> text2speech at 59

Caused by:
Error using ==> loaddefinedlibrary
C:\Users\charlie\Documents\MATLAB\Sounds\text2speech\wgText2Speech.dll is not a valid Win32 application.

Question: Could you provide the source code to be re-compiled in the 64bit OS?

11 May 2010 Blake

Sorry... I missed a single quote mark.. should read

text2speech (['count backward from' int2str(k) 'by sevens']);

11 Mar 2010 Jonathan Cofino

My computer also hangs when I attempt to use the 'text2speech' function. It worked great in MS XP, but not in MS Vista. very odd.

10 Sep 2009 M

I get stuck when loading the speech library.

This program calls MATLAB's loadlibrary function, which in turn calls the function loaddefinedlibrary. At that point, MATLAB hangs. I let it go for a few minutes and then have to force-quit MATLAB from the Task Manager. I don't get an error message, so I am not sure I have the same error as people who do get an error message about not having a module installed.

Any idea how to fix this issue? I guess it is more general than text2speech but am wondering if anyone ran across this error while using the program.

24 Jul 2009 Wolfgang Garn

Speed tag: <rate absspeed="5">, relative speed <rate speed="2"> Values are between -10 and +10.
See XML TTS tutorial (http://msdn.microsoft.com/en-us/library/ms717077(VS.85).aspx ) for more information.

21 Jun 2009 marian nasry

thanks for this code very much , but i've one question : how can I control the speed of the speech;
please help me

03 Nov 2007 bharath kumar

hi when i try to execute this code it says Undefined function or variable loadlibrary
can anyone plz help me

17 Apr 2007 Nathan Miller

Works beautifully!

24 Jul 2009

Matlab 2009 release (version 7.8+) usage of SpeechSynthesizer recommended.

25 Jan 2011

Added function "tts" which uses .NET (but has no special voice features yet as in the previous text2speech version), but overcomes "Visual C++ 2005 or 2008 requirement".

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