Java Speech API Frequently Asked Questions. This collection of frequently asked questions (FAQ) provides brief answers to many common questions about the Java Speech API (JSAPI). Download Questions. API Questions. Implementation Questions. Question Index. Where can I get the Java Speech API (JSAPI)? The Java Speech API (JSAPI) is not part of the JDK and Sun does not ship an implementation of JSAPI. Instead, we work with third party speech companies to encourage the availability of multiple implementations. It defines a cross- platform API to support command and control recognizers, dictation systems and speech synthesizers. ISpeech free text to speech (TTS) and speech recognition (ASR) software converts text to natural sounding voice recognition online. Would you like to add speech synthesis and speech recognition to your app? Read futher to discover how. Java Microsoft &.NET Mobile Android Open Source Cloud Database Architecture. ![]() This page provides an overview of the interfaces for speech recognition in the Microsoft Speech Platform, and provides links to additional topics and examples. ISpRecoContext is the main interface for speech recognition in the Speech Platform. ISpRecoContext is an ISpEventSource, which means that it. An open source toolkit for speech recognition, which includes a recognizer library written in C; an adjustable, modifiable recognizer written in Java; language model tools; and acoustic model training tools. Click the file you want to download from the list below. Do one of the following: To start the installation immediately, click Open or Run this program from its current location. To copy the download to your computer for installation at a later time, click Save or Save. A Recognizer provides access to speech recognition capabilities. The Recognizer interface extends the javax.speech.Engine interface and so inherits the basic engine capabilities and provides additional specialized capabilities. The primary capabilities provided by a recognizer are grammar management. Sphinx4 is a pure Java speech recognition library. It provides a quick and easy API to convert the speech recordings into text with the help CMUSphinx acoustic models. It can be used on servers and in desktop applications. Beside speech recognition Sphinx4 helps to identify speakers, adapt models. How to Use the Speech Recognition Engine NOTE: The steps in this procedure may vary depending on the program in which you are using speech recognition. Position the microphone so that it is about an inch or a thumb's width to the side of your mouth. ![]() The specification also includes a detailed Programmer's Guide which explains both introductory and advanced speech application programming with JSAPI. Two companion specifications are available: JSML and JSGF. The specification is not yet provided with the . JSAPI. JSML (currently in beta) defines a standard text format for marking up text for input to a speech synthesizer. JSGF version 1. 0 defines a standard text format for providing a grammar to a speech recognizer. Both specifications are available here. Question Index. How was the JSAPI specification developed? Sun Microsystems, Inc. Sun is grateful for the contributions of: Question Index. How does JSAPI relate to other Java APIs? The Java Speech API is part of a family of APIs that work together as a suite to provide customers with enhanced graphics and extended communications capabilities. These APIs include the. Question Index. What JSAPI implementations are now available? The Java Speech API is a freely available specification and therefore anyone is welcome to develop an implementation. The following implementations are known to exist. Note: Sun Microsystems, Inc. The implementations listed here have not been tested with regard to compliance to the JSAPI specification, nor does their appearance on this page imply any form of endorsement of compliance on the part of Sun. Free. TTS on Description: Open source speech synthesizer written entirely in the Java programming language. Requirements: JDK 1. Read about more requirements on the Free. TTS web site. IBM's . It supports all the European language versions of Via. Voice - - US & UK English, French, German, Italian and Spanish - - plus Japanese. Requirements: JDK 1. JDK 1. 2 on Windows 9. MB, or Windows NT with 4. MB. Both platforms also require an installation Via. Voice 9. 8. IBM's . Currently only supports speech recognition. Requirements: Red Hat Linux 6. MB, and Blackdown JDK 1. The Cloud Garden. Description: Implementation for use with any recognition/TTS speech engine compliant with Microsoft's SAPI5 (with SAPI4 support for TTS engines only). An additional package allows redirection of audio data to/from Files, Lines and remote clients (using the javax. Some examples demonstrate its use in applets in Netscape and IE browsers. Requirements: JDK 1. Windows 9. 8, Me, 2. NT, and any SAPI 5. Microsoft's web site). Lernout & Hauspie's TTS for Java Speech APIDescription: Implementations based upon ASR1. TTS3. 00. 0 engines, which support command and control and speech synthesis. Supports 1. 0 different voices and associated whispering voices for the English language. Provides control for pitch, pitch range, speaking rate, and volume. Requirements: Sun Solaris OS version 2. JDK 1. 1. 5. Sun Swing package (free download) for graphical Type- n- Talk demo. More information: Contact Edmund Kwan, Director of Sales, Western Region Speech and Language Technologies and Solutions (ekwan@lhs. Conversa Web 3. 0. Description: Conversa Web is a voice- enabled Web browser that provides a range of facilities for voice- navigation of the web by speech recognition and text- to- speech. The developers of Conversa Web chose to write a JSAPI implementation for the speech support. Requirements: Windows 9. NT 4. 0 running on Intel Pentium 1. MHz processor or faster (or equivalent). Minimum of 3. 2 MB RAM (6. MB recommended). Multimedia system: sound card and speakers. Microsoft Internet Explorer 4. Festival. Description: Festival is a general multi- lingual speech synthesis system developed by the Centre for Speech Technology Research at the University of Edinburgh. It offers a full text to speech system with various APIs, as well an environment for development and research of speech synthesis techniques. It is written in C++ with a Scheme- based command interpreter for general control and provides a binding to the Java Speech API. Supports the English (British and American), Spanish and Welsh languages. Requirements: Festival runs on Suns (Sun. OS and Solaris), Free. BSD, Linux, SGIs, HPs and DEC Alphas and is portable to other Unix machines. Preliminary support is available for Windows 9. NT. For details and requirements see the Festival download page. Elan Speech Cube. Description: Elan Speech Cube is a Multilingual, multichannel, cross- operating system text- to- speech software component for client- server architecture. Speech Cube is available with 2 TTS technologies (Elan Tempo : diphone concatenation and Elan Sayso : unit selection), covering 1. Speech Cube native Java client supports JSAPI/JSML. Requirements: JDK 1. Windows NT/2. 00. XP, Linux or Solaris 2. Speech Cube V4. 2 and higher. About Elan Speech: Elan Speech is an established worldwide provider of text- to- speech technology (TTS). Elan TTS transforms any IT generated text into speech and reads it out loud. Question Index. How do I use JSAPI in an applet? It is possible to use JSAPI in an applet. In order to do this, users will need the Java Plug- in (see here). The reason for this is that JSAPI implementations require access to the AWT Event. Queue, and the built- in JDK support in the browsers we've worked with denies any applet access to the AWT Event. Queue. The Java Plug- in doesn't have this restriction, and users can configure the Java Plug- in to grant or deny applet access to the AWT Queue. If you are using JRE 1. Have your users follow these steps if your applet is based upon JDK 1. Obtain a JDK 1. 1. Java Runtime Environment (JRE). The reason for this is we have had problems with applet security being denied with JDK 1. Please note that the user needs the JRE and not the JDK. The JRE is freely available for download from the following URL. Before running the browser, have the user modify their CLASSPATH environment variable to include the supporting classes for JSAPI. For example, if the user has IBM's Speech for Java, have the user include the ibmjs. CLASSPATH. Make sure any shared libraries for the JSAPI support are in the user's PATH. For example, if the user has IBM's Speech For Java, have the user include the ibmjs lib directory in their PATH (e. Have the user copy the speech. A user can determine their home directory by enabling the console for the Java Plug- in. When the user accesses a page that uses the Java Plug- in, the Java Plug- in console will tell the user what it thinks the user's home directory is. Use javakey to add your identity to their signature database (i. This will tell the Java Plug- in to trust applets signed by you. Copy the identitydb. Then perform these steps on your applet: Use javakey to both create a signature database for your system and to sign your applet's jar file. This will allow the applet to participate in the security model. Create an HTML page that uses your applet in the Plug- in. If the user experiences a . A way to remedy this is to recreate your identitydb. If you are using JRE 1. The Java 2 platform's security model allows signing as done with JDK 1. The following are just some examples, and we recommend you read the Java Security Architecture Specification at the following URL before deciding what to do: link. For a quick start, have your users do the following if your applet uses the Java 2 (i. JDK 1. 2) platform: Obtain the JDK 1. Plug- in. Before running the browser, have the user modify their CLASSPATH environment variable to include the supporting classes for JSAPI. For example, if the user has IBM's Speech for Java, have the user include the ibmjs. CLASSPATH. Make sure any shared libraries for the JSAPI support are in the user's PATH. For example, if the user has IBM's Speech For Java, have the user include the ibmjs lib directory in their PATH (e. Have the user copy the speech. A user can determine their home directory by enabling the console for the Java Plug- in. When the user accesses a page that uses the Java Plug- in, the Java Plug- in console will tell the user what it thinks the user's home directory is. Have the user modify their java. Java Plug- in's security directory appropriately. There are many ways to do this. The following are just a few possibilities. Grant all applets the All. Permission property. This is extremely dangerous and is only provided as an example. To do this, have the user modify their java. To do this, have the user add the following lines to their java. Base . Instead, it is meant to be hopefully enough to get you started with running JSAPI applets in a browser. We suggest you visit the following URLs to obtain more information on the Java Security models: Java Security Home Page: link. Tutorial on JDK 1. Security: link. Tutorial on JDK 1. Security: link. Question Index. Why does Netscape Navigator or Internet Explorer throw a security exception when I use JSAPI in an applet? JSAPI implementations require access to the AWT Event. Queue. The built- in Java platform support in the browsers we've worked with denies an applet access to the AWT Event. Queue. As a result, JSAPI implementations will be denied access to the AWT Event. Queue. In addition, we are not aware of a way to configure the built- in Java platform support in these environments to allow access to the AWT Event. Queue. The Java Plug- in (see link), however, can be configured to allow an applet the necessary permissions it needs to use an implementation of JSAPI.
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