Search   Contact   Home    
ProductsSupportDownloadsSpeech TechnologyLinksCustomer CommentsFree Stuff

DTalk To-Do list & Download Page

Follow these steps to gather all the bits necessary to build and test speech enabled applications using DTalk with either Delphi or C++Builder.
Step 1.
Speech Enable Your computer system
The very first thing you must do is ensure that the speech extensions are installed in your operating system. These are the binaries that add the SAPI speech capabilities to your OS. As a speech application developer you add these binaries by downloading and installing the SAPI SDK. The SDK comes in two flavors. You can get just the SDK by it self or the SDK with all the freely redistributable speech engine's. 

 Download the  SAPI SDK Only (8+ mb) or the SAPI SDK "Suite" (40+ mb). The suite also includes all of the Microsoft Speech engines. Installing either version of the SDK will also install the SAPI OS extensions. Note that when you get round to distributing your speech application you will probably also want to make the re-distributable file spchapi.exe (SAPI 4. runtime support) available to your users. This file also comes with the SDK.

As alternative to downloading the whole suite you can also go to the Microsoft Agent component page ( and download  the various SAPI 4 parts from there.  At a minimum you should download the SAPI 4 runtime support (spchapi.exe), at least one text-to-speech engine, and one Speech Recognition engine. Note that you will find a number of foreign language text-to-speech engines here including Dutch, French, German, Italian, Japanese, Korean, Portuguese,   Russian, and Spanish.

Step 2
Download SAPI compliant engines.
If you downloaded and installed the SDK suite in step 1 then you can skip this step because it included a number of speech engines. Otherwise, you need to get SAPI compliant speech engines for text-to-speech and speech recognition.
bulletMicrosoft makes their speech engines (Continuous Dictation, Command and Control and Text-to-Speech available for at no cost. You can even redistribute the engines with your DTalk application. Check out the this link  for further details.
bullet Digalo is a Text-To-Speech (TTS) engine that will read all your computer texts in any of 7 languages: French, German, Spanish, Brazilian, Russian, British English, and US English- with the most natural sounding voices yet. Digalo empowers all speaking applications supporting SAPI or MS Agent. Download the Trial Version Now!
bulletAnother set of free Text-to-Speech engines is available on the MS Agent web site at These are legacy engines licensed to Microsoft by Lenout & Hauspie (L&H). They are not supported by either company.
bulletIBM is also currently making its SR engine available for free download at VoiceType Developers Corner.

From time to time other vendors will make versions of their engines available for download. We will let you know as these become available.

Step 3.
Download DTalk
Finally, download the DTalk component set demo. This demo is a completely functional version of DTalk with the only limitation being that applications created with the component set only work when Delphi is also running.  
DTalk1 DTalk2 DTalk3
Delphi 2 Click Here na na
Delphi 3 na na Click Here
Delphi 4 na na Click Here
Delphi 5 na na Click Here
Delphi 6 na na Click Here
Delphi 7 na na Click Here
CBuilder 1 na na na
CBuilder 3 na na Click Here
CBuilder 4 na na Click Here
CBuilder 5 na na Click Here
Step 4.
Install everything
For best results install your collection of downloads in the following order.
  1. First install the SAPI SDK. 
  2. Next install the engines. (If you installed the SAPI SDK 4.0 suite then the engines are already installed.
  3. Finally install the DTalk component set into Delphi or C++Builder and run the demo programs. 

If you find that any of the links on this page are broken then please let us know by sending us an E-Mail message.

Top of Page


E-Mail us  
  Search | Contact | Products | Services & Support | Downloads | Speech | Links | Comments
Last updated October 20, 2005
© 1999, 2000 O&A Productions