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Article ID: 306537 - Last Review: May 1, 2013 - Revision: 7.0

This article was previously published under Q306537

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INTRODUCTION

This article describes how to install and configure speech recognition in Windows XP. A driver, which is known as a speech recognition engine, recognizes spoken words and converts them to text. You can use speech recognition in all Office programs and other programs for which it is enabled, such as Microsoft Internet Explorer.

Note You can use speech recognition in Microsoft Office 2003 and 2002 programs in Windows XP. Versions of Microsoft Office programs that are earlier than Office 2002 do not support speech recognition. Windows XP does not support speech recognition in 2007 Microsoft Office programs.

For speech systems to work correctly and provide optimal results, you must set up the components correctly. Speech capabilities work with system default settings. Except for the physical connection of speakers and microphones, all other components are intended to work automatically. Some computers are equipped with built-in speakers and microphones. In these cases, you do not have to configure anything.

To make sure that the engine is installed correctly, follow the setup guidelines described in this article. If you have problems installing the engine or if you have sound problems, go to the "Troubleshooting" section.

More information

Requirements

To use speech recognition, you must have the following hardware and software components:
  • Speech recognition engine. It is available with Office XP, but it may not be installed.

    To determine whether the speech recognition engine is installed on your computer, follow these steps:
    1. Click Start, and then click Run.
    2. Type control mmsys.cpl sounds in the Open box, and then press ENTER. The Sounds, Speech, and Audio Devices window is displayed.
    3. Click Speech in the Sounds, Speech, and Audio Devices window.

      Note If you do not have a Sounds, Speech, and Audio Devices window, but have a Sounds and Audio Devices window instead, the speech component may be in a separate window. In this case, follow these steps:
      1. Click Start, and then click Run.
      2. Type control in the Open box, and then press ENTER.
      3. Double-click Speech.
    4. Look for the Speech Recognition tab. If the Speech Recognition tab is available in Speech Properties, the speech recognition engine is installed. If it is not available, the engine is not installed.
  • A high-quality close-talk (headset) microphone. We recommend a USB microphone.
  • A 400-megahertz (MHz) or faster computer that has 128 megabytes (MB) of memory.
  • Microsoft Internet Explorer, version 5.0, or later versions of Internet Explorer.
If the speech recognition engine is already installed, go to the "How to set up your hardware" section. If the engine is not installed, go to the "How to install the speech recognition engine" section.

How to install the speech recognition engine

If you recently purchased a new computer, the Microsoft speech recognition engine may already be installed. In that case, you do not have to install it again. If you installed Office XP in an older computer, or if you purchased a new computer that has Office XP installed, the speech recognition engine is included. However, the engine may not be installed.

This section describes how to install the speech recognition engine. Start with the first section, "Install speech recognition by using Add or Remove Programs." Then, go to the "Turn on speech recognition in Microsoft Office 2003 and 2002" section. If you removed speech recognition as a text service and want to re-add it, go to the "Add speech recognition as a text service" section.

Install speech recognition by using Add or Remove Programs

To install speech recognition by using Add or Remove Programs, follow these steps:
  1. Click Start, and then click Run.
  2. Type control appwiz.cpl add new hardware in the Open box, and then press ENTER. The Add or Remove Programs window is displayed.
  3. Click Microsoft Office XP, and then click Change.
  4. Click Add or Remove Features, and then click Next.
  5. Under Features to install, double-click Office Shared Features.
  6. Double-click Alternative User Input, click Speech, click the down arrow, and then click Run from My Computer.
  7. Click Update. Speech recognition is now available in all Office programs and other programs for which it is enabled, such as Internet Explorer.
If you receive an error when you install speech recognition, or if you cannot install it, go to the "Next Steps" section.

The Microphone Wizard might start automatically after you install the speech recognition engine. If it starts automatically, you can install and configure your hardware immediately. Or, you can exit the wizard and set up the hardware another time by using the "How to set up your hardware" section.

Turn on speech recognition in Microsoft Office 2003 and 2002 programs

After you install the speech recognition engine, turn on speech recognition in the Microsoft Office program in which you want to use it.

To turn on speech recognition in Microsoft Office 2003 and 2002 programs, follow these steps:
  1. Start the Microsoft Office 2003 or 2002 program in which you want to use speech recognition.
  2. On the Tools menu, click Speech.
After speech recognition is installed and turned on, you can do several things:
  • To change the speech recognition engine or specific settings on your selected engine, go to the "How to configure speech recognition engines" section.
  • If you are satisfied with your speech engine settings, go to the "How to set up your hardware" section to set up your hardware to use speech recognition.
  • If your hardware is already installed, go to the "How to train speech recognition" section. For best results, we recommend that you spend at least 15 minutes training speech recognition to your environment and to the sound of your voice.

Add speech recognition as a text service

Generally, speech recognition is added automatically as a text service when it is installed. Follow these steps only if you removed speech recognition as a text service and want to re-add it.

To add speech recognition as a text service, follow these steps:
  1. Click Start, and then click Run.
  2. Type control intl.cpl in the Open box, and then press ENTER. The Regional and Language Options window is displayed.
  3. Click the Languages tab, and then click Details under Text services and input languages.
  4. Under Installed services, click Add.
  5. In the Input language list, click a language.
  6. Select the Speech check box, and then click an option in the list.

How to configure speech recognition engines

This section describes how to configure speech recognition engines. Microsoft speech recognition engines are language-specific and are currently available for Simplified Chinese, U.S. English, and Japanese. Engines for other languages will become available over time.

Change speech recognition engines

To change to a different speech recognition engine, follow these steps:
  1. Click Start, and then click Run.
  2. Type control mmsys.cpl sounds in the Open box, and then press ENTER. The Sounds, Speech, and Audio Devices window is displayed.
  3. Click Speech in the Sounds, Speech, and Audio Devices window.

    Note If you do not have a Sounds, Speech, and Audio Devices window, but have a Sounds and Audio Devices window instead, the speech component may be in a separate window. In this case, follow these steps:
    1. Click Start, and then click Run.
    2. Type control in the Open box, and then press ENTER.
    3. Double-click Speech.
  4. Click the Speech Recognition tab. The name that appears in the Language box is the active engine.
  5. Click the active engine or use the arrow to display a list of available engines.
  6. Click a new engine, and then click OK or Apply to accept the new engine.
  7. Stop all programs that use speech, and then restart the program that you want to use to start the different speech engine.

    Note You may be unable to determine the language that an engine supports by the name of the engine. See the documentation for the engine for detailed information about the engine. This information includes the language supported and the lexicon purpose. The lexicon purpose indicates whether the language is a general grammar or is jargon-specific to a profession, such as the legal profession or the medical profession.

Change speech engine settings

Some speech engines have additional and specialized features. However, special features are not required, and not all engines support them. To change speech engine settings, follow these steps:
  1. Click Start, and then click Run.
  2. Type control mmsys.cpl sounds in the Open box, and then press ENTER. The Sounds, Speech, and Audio Devices window is displayed.
  3. Click Speech in the Sounds, Speech, and Audio Devices window.

    Note If you do not have a Sounds, Speech, and Audio Devices window, but have a Sounds and Audio Devices window instead, the speech component may be in a separate window. In this case, follow these steps:
    1. Click Start, and then click Run.
    2. Type control in the Open box, and then press ENTER.
    3. Double-click Speech.
  4. On the Speech Recognition tab, click Settings in the Language section, and then follow the instructions in the dialog box or the instructions in the documentation for the engine. Special features depend on the engine's manufacturer.

    Note If the selected speech engine does not support custom features, the Settings option in the Language section is not available.
Continue to the next section to set up your hardware for speech recognition. If the hardware is already set up, go to the "How to train speech recognition" section to prepare to use speech recognition.

How to set up your hardware

This section describes how to set up your microphone and other input devices. It also describes how to set up your speakers and other output devices.

How to set up input hardware

This section describes how to install a microphone for speech recognition and how to set several additional audio options. These include configuring the microphone, setting sound levels, selecting alternative lines for the microphone, and designating which microphone to use for speech recognition if you have more than one microphone. Start with setting up your microphone, and then continue through the other steps as needed.
Set up a microphone
Microphones vary greatly in design and purpose. See your microphone manual for hardware and software specifics. However, most models are installed in a similar manner.
  1. Locate the sound connections, and then connect the microphone jack to the computer. Most computers use an internal sound card, and the connections are frequently on the back of the computer.

    There are several connections that are the same size and diameter as the microphone jack. Locate the microphone connection. The connection is designated with a small microphone icon or a descriptive label.
  2. Plug the microphone into the microphone connection.
  3. To test the microphone connection, follow these steps:
    1. Click Start, and then click Run.
    2. Type control mmsys.cpl sounds in the Open box, and then press ENTER. The Sounds, Speech, and Audio Devices window is displayed.
    3. Click Speech in the Sounds, Speech, and Audio Devices window.

      Note If you do not have a Sounds, Speech, and Audio Devices window, but have a Sounds and Audio Devices window instead, the speech component may be in a separate window. In this case, follow these steps:
      • Click Start, and then click Run.
      • Type control in the Open box, and then press ENTER.
      • Double-click Speech.
    4. Click the Speech Recognition tab.
    5. Speak directly into the microphone. The sound level should register in the Microphone Level indicator.
    The Microphone box displays a linear register of the input sounds. If the microphone is accepting input, a bar is displayed that indicates the sound level. Ordinary speech should register slightly less than halfway on the graph. If no sound registers, make sure that the microphone is turned on. Some models have a mute switch. Also, verify the connections to the computer. Some computers have several locations to plug in a microphone
    • If sound registers, continue to the next section to configure your microphone if this option is available to you. If that option is not available to you, but your microphone is operating, go to the "How to set up output hardware" section to make sure that you have installed the speakers correctly.
    • If you have more than one microphone and you want to use one microphone for speech recognition and another microphone for all other sound input, go to the "Select an audio input device" section.
    • If no sound registers after you connect the microphone, there are several things that you can try:
      • First, go to the "Configure the microphone" section to see whether you can make adjustments that will address the issue.
      • If sound still does not register, go to the "Select the audio input device line" section to see whether a line other than the one that you are using works, and then go to the "Change the input volume levels" section to make sound level adjustments to the line, if it is necessary.
      • If this still does not resolve the issue, go to the "How to troubleshoot speech recognition problems" section for troubleshooting procedures.
Configure the microphone
Microphone performance depends on many factors. This includes the distance from mouth to microphone and the correct positioning of the microphone. Each manufacturer has specific requirements.

To configure the microphone, follow these steps:
  1. Click Start, and then click Run.
  2. Type control mmsys.cpl sounds in the Open box, and then press ENTER. The Sounds, Speech, and Audio Devices window is displayed.
  3. Click Speech in the Sounds, Speech, and Audio Devices window.

    Note If you do not have a Sounds, Speech, and Audio Devices window, but have a Sounds and Audio Devices window instead, the speech component may be in a separate window. In this case, follow these steps:
    1. Click Start, and then click Run.
    2. Type control in the Open box, and then press ENTER.
    3. Double-click Speech.
  4. Click the Speech Recognition tab, and then click Configure Microphone to start the Microphone Wizard. The features that are supported depend on the manufacturer of the engine.

    Note The Configure Microphone option is available only if the current engine supports microphone training.
  5. Follow the instructions that appear on your screen.
Select the audio input device line
To select the input line into which you plug the microphone, follow these steps:
  1. Click Start, and then click Run.
  2. Type control mmsys.cpl sounds in the Open box, and then press ENTER. The Sounds, Speech, and Audio Devices window is displayed.
  3. Click Speech in the Sounds, Speech, and Audio Devices window.

    Note If you do not have a Sounds, Speech, and Audio Devices window, but have a Sounds and Audio Devices window instead, the speech component may be in a separate window. In this case, follow these steps:
    1. Click Start, and then click Run.
    2. Type control in the Open box, and then press ENTER.
    3. Double-click Speech.
  4. Click the Speech Recognition tab, click Audio Input, and then click Properties.
  5. Click any one of the following options:
    • Use automatically chosen line: When you click this option, the input line is set to a default that is determined by the speech system. Because of differences in drivers, capabilities, and languages used, there may be variances in the selected option.

      The default may not work with all options. If the default line does not work correctly, manually select a new line. To do this, click Use this audio input line.
    • Use this audio input line: When you click this option, you can select a different line for audio input. The options include all audio lines for the computer. However, be aware that not all audio lines are supported for speech.
Select an audio input device
To select an audio input device, follow these steps:
  1. Click Start, and then click Run.
  2. Type control mmsys.cpl sounds in the Open box, and then press ENTER. The Sounds, Speech, and Audio Devices window is displayed.
  3. Click Speech in the Sounds, Speech, and Audio Devices window.

    Note If you do not have a Sounds, Speech, and Audio Devices window, but have a Sounds and Audio Devices window instead, the speech component may be in a separate window. In this case, follow these steps:
    1. Click Start, and then click Run.
    2. Type control in the Open box, and then press ENTER.
    3. Double-click Speech.
  4. Click the Speech Recognition tab, and then click Audio Input.
  5. Click one of the following options:
    • Use preferred audio input device: When you click this option, the input device is set to the default device for the computer. Click this option if you want your speech programs to use the same input device as all other sound devices for the computer. Frequently, computers have only one input device, such as the headset microphone. This device is the default device in Speech properties. The default device is designated in the sounds or multimedia properties in Control Panel for each operating system.
    • Use this audio input device: When you click this option, you can select a different device for speech programs only. Click this option to change to a different input device. The drop-down list is available only if other devices are available. In the drop-down list, click the device that you want to use. If you make a selection here, the default device is not changed for other audio programs. For example, you may want all speech input to use the headset microphone instead of an omni-directional microphone.
Change the input volume levels
To change the speech recognition volume input levels, follow these steps:
  1. Click Start, and then click Run.
  2. Type control mmsys.cpl sounds in the Open box, and then press ENTER. The Sounds, Speech, and Audio Devices window is displayed.
  3. Click Speech in the Sounds, Speech, and Audio Devices window.

    Note If you do not have a Sounds, Speech, and Audio Devices window, but have a Sounds and Audio Devices window instead, the speech component may be in a separate window. In this case, follow these steps:
    1. Click Start, and then click Run.
    2. Type control in the Open box, and then press ENTER.
    3. Double-click Speech.
  4. Click the Speech Recognition tab, click Audio Input, and then click Volume.
  5. A volume control mixer is displayed. Adjust the volume to the level that you want.

    Note Not all devices support this option in the same manner. Some devices do not support volume control and the Volume option is not available. Other engines may use their own interface. In these cases, follow the instructions that appear on the screen or that are documented separately with the engine.
If you want to set up speakers or another output device, continue with the "How to set up output hardware" section. If you do not have to set up an output device, go to the "How to train speech recognition" section to prepare to use speech recognition.

How to set up output hardware

Set up the speakers
Speakers vary greatly in design and purpose. See your speaker manual for hardware and software specifics. However, most models are installed in a similar manner.

To set up the speakers, follow these steps:
  1. Locate the sound connections and connect the speaker jack to the computer. Because most computers use an internal sound card, the connections are frequently located at the back of the computer. There are several connections that are the same size and diameter as the speaker jack. Frequently, there are two sound-out connections:
    • One connection is labeled as a line-out connection. Most speakers that require a separate power supply (such as an electrical adapter or batteries) use this connection. This connection is also used to export amplified sound to recording devices, such as recordable CDs and tape cassette systems.
    • The other connection is for non-powered speakers. Because the computer increases the signal, powered speakers may be damaged if they are connected here.
  2. Plug the speaker into the correct connection.
  3. To test the speaker connection, follow these steps:
    1. Click Start, and then click Run.
    2. Type control in the Open box, and then press ENTER.
    3. Double-click Speech.
    4. Click the Text-to-Speech tab, and then click Preview Voice to hear the selected voice. The text is spoken, and words are highlighted as they are spoken. If the speakers are working correctly, you hear the spoken words.
    • If you hear sound, go to the "Set audio output device options" section to set advanced audio output options, or go to the "How to train speech recognition" section to prepare to use speech recognition.
    • If you have more than one output device and you want to use one for speech recognition only and use another device for all other sound output, go to the "Select an audio output device" section.
    • If you do not hear sound after you connect the speakers, go to the "How to troubleshoot text-to-speech problems" section.
Select an audio output device
To select an audio output device, follow these steps:
  1. Click Start, and then click Run.
  2. Type control mmsys.cpl sounds in the Open box, and then press ENTER. The Sounds, Speech, and Audio Devices window is displayed.
  3. Click Speech in the Sounds, Speech, and Audio Devices window.

    Note If you do not have a Sounds, Speech, and Audio Devices window, but have a Sounds and Audio Devices window instead, the speech component may be in a separate window. In this case, follow these steps:
    1. Click Start, and then click Run.
    2. Type control in the Open box, and then press ENTER.
    3. Double-click Speech.
  4. Click the Text-to-Speech tab, and then click Audio Output.
  5. Click either of the following options:
    • Use preferred audio device: When you click this option, the output device is set as the default device for the computer. Click this option if you want to use the same output device for speech as for all other sound for the system. It is also the default option for Speech properties. Frequently, computers have only one output device, such as a pair of speakers. The default device is designated in the sounds or multimedia properties in Control Panel for each operating system.
    • Use this audio output device: When you click this option, you can select a different device for speech programs only. The drop-down list is available only if other devices are available. In the drop-down list, click the device that you want to use. When you do this, the default device for other audio programs is not changed. For example, you may want all speech output to use your headset instead of the speakers.
Set audio output device options
By default, the option to set audio output device options is disabled. However, other speech engines may include advanced properties for audio line-out options. In these cases, Audio Output is available. Follow the instructions that appear on the screen or in the documentation for the engine.

To set up audio output device options, follow these steps:
  1. Click Start, and then click Run.
  2. Type control mmsys.cpl sounds in the Open box, and then press ENTER. The Sounds, Speech, and Audio Devices window is displayed.
  3. Click Speech in the Sounds, Speech, and Audio Devices window.

    Note If you do not have a Sounds, Speech, and Audio Devices window, but have a Sounds and Audio Devices window instead, the speech component may be in a separate window. In this case, follow these steps:
    1. Click Start, and then click Run.
    2. Type control in the Open box, and then press ENTER.
    3. Double-click Speech.
  4. Click the Text-to-Speech tab, and then click Audio Output.
  5. Follow the instructions that appear on the screen.
After you complete your audio setup, continue to the "How to train speech recognition" section to prepare to use speech recognition.

How to train speech recognition

After the system is installed and working correctly, train the engine for your environment and speaking style. We recommend that you spend at least 15 minutes training the computer. The more training you do, the better your recognition accuracy will be. The engine adapts to your speaking style, and accommodates accents, varying pronunciations, and even idiomatic phrases. The engine can also be trained to recognize background noises, such as a fan, air conditioning, or other office sounds. Use the information in this section to train the engine. This section also covers some additional settings and properties that you can use to customize speech-enabled programs on your computer.

Note Not all speech recognition engines support training.

Train the speech recognition engine

To determine whether your speech recognition engine supports training, and to start the training if it does support training, follow these steps:
  1. Click Start, and then click Run.
  2. Type control mmsys.cpl sounds in the Open box, and then press ENTER. The Sounds, Speech, and Audio Devices window is displayed.
  3. Click Speech in the Sounds, Speech, and Audio Devices window.

    Note If you do not have a Sounds, Speech, and Audio Devices window, but have a Sounds and Audio Devices window instead, the speech component may be in a separate window. In this case, follow these steps:
    1. Click Start, and then click Run.
    2. Type control in the Open box, and then press ENTER.
    3. Double-click Speech.
  4. Click the Speech Recognition tab, and then click the speech recognition engine that you want to use in the Language box.
  5. Click the profile that you want to use from the Recognition Profile group. Training is specific to an engine and a profile. Therefore, if you train one engine or profile, this training does not affect any other engine or profile.
  6. Click Train Profile, and then follow the directions in the Voice Training Wizard. If your engine does not support training, Train Profile is not available. For additional information about how to use speech recognition in Windows XP, click the following article number to view the article in the Microsoft Knowledge Base:
    306901  (http://support.microsoft.com/kb/306901/ ) How to use speech recognition in Windows XP

Set speech recognition options

During training, you can experiment with different options to find the best configuration for you. To set speech recognition options, follow these steps:
  1. Click Start, and then click Run.
  2. Type control mmsys.cpl sounds in the Open box, and then press ENTER. The Sounds, Speech, and Audio Devices window is displayed.
  3. Click Speech in the Sounds, Speech, and Audio Devices window.

    Note If you do not have a Sounds, Speech, and Audio Devices window, but have a Sounds and Audio Devices window instead, the speech component may be in a separate window. In this case, follow these steps:
    1. Click Start, and then click Run.
    2. Type control in the Open box, and then press ENTER.
    3. Double-click Speech.
  4. On the Speech Recognition tab, click Settings in the Recognition Profiles section.
  5. Click any one of the following options:
    • Pronunciation Sensitivity: When you click this option, you can set the level of confidence that is required for the computer to respond to your command. The High sensitivity setting indicates that you want the computer to reject any command when it is not confident of what you said. When you use this setting, the computer makes fewer recognition errors but more frequently rejects your commands. Therefore, you may have to enunciate more slowly and clearly. The Low sensitivity setting indicates that you want the computer to respond to your command when it has almost no confidence that it has correctly recognized what you said. When you use this setting, the computer recognizes fewer commands but rarely rejects a command. This option affects only command and control programs.
    • Accuracy vs. Recognition Response Time: When you click this option, you can set the tradeoff between the accuracy of speech recognition and the processing time that the computer requires to generate the recognized speech. With the Low/Fast setting, the computer limits the time that is spent processing. The recognized text appears on the screen quickly but with low accuracy. With the High/Slow setting, the computer processes more for better accuracy but produces the dictated text more slowly. This option affects command-and-control programs and dictation programs.
    • Background Adaptation: When you click this option, you can set whether the computer adapts to your voice and manner of speech. With this option, the computer learns what your voice sounds like (in a particular environment). This information is stored in your profile and contributes to an improvement in recognition accuracy. It is a best practice to select this option.
  6. To accept a new option, click OK. To ignore any changes that are made in the dialog box and to keep the current options, click Cancel. If you click Restore Defaults, all changes are overridden, and the options are set to a default state.

    Note These features are unique to Microsoft speech recognition engines. Some speech engines have additional and specialized features. However, special features are not required, and not all speech engines support them. If the selected speech engine does not support custom features, options in the Recognition Profiles group are not available.
After you complete the training, continue to the "Set speech recognition properties" section to customize speech-enabled programs. Or, you can go to the "More information" section for other resources to help you use speech recognition.

If you experience errors when you try to train the speech recognition, or if you experience other problems when you try to set the speech recognition properties, go to the "Next Steps" section.

Set speech recognition properties

You can use either the Speech Recognition tab or the Text-to-Speech tab in the Speech properties to set up and to customize speech-enabled programs. These settings control general attributes, such as input and output devices, the language that is used, the playback voice, and the accuracy of word recognition. Individual programs may implement speech differently. See the documentation for more specific information. However, some attributes are shared by speech engines or by computers across different software programs. These shared features are set in the Speech properties. For additional information about how to use text-to-speech in Windows XP, click the following article number to view the article in the Microsoft Knowledge Base:
306902  (http://support.microsoft.com/kb/306902/ ) How to Use text-to-speech in Windows XP
You can select from several optional settings and customize the speech profile according to your requirements. However, many options are proprietary and may vary between computer systems. Therefore, some buttons and screens may not act the same under all circumstances. See the instructions for your computer, speech software, or device hardware.

You may also create a new profile or set a profile to fit your speaking style. It is good practice to create a new Recognizer Profile if you change offices, if the noise level permanently changes, or if more people are frequently present. To do this, click New on the Speech Recognition panel. With Recognizer Profiles, different users can share the same computer without interfering with other speech configurations. For additional information about speech recognition profiles, click the following article number to view the article in the Microsoft Knowledge Base:
306899  (http://support.microsoft.com/kb/306899/ ) How to use speech recognition profiles in Windows XP

Troubleshooting

This section describes how troubleshoot issues that may occur with speech recognition.

How to troubleshoot speech recognition problems

If no sound is detected after you test the system, one of the following conditions may be true:
  • The microphone is muted. Some microphones have an external control for muting. Make sure that the muting is turned off.
  • The microphone input level is set too low. To change this setting, click the Speech Recognition tab, click Configure Microphone, and then follow the directions in the Microphone wizard to set the input level.
  • The microphone may not be selected as the current input device. To change this setting, click the Speech Recognition tab, and then click Audio Input to make sure that the microphone is selected.
  • The microphone connections may not be secured. Make sure that the microphone wires are intact and unbroken. Unplug the wires, and then reconnect them to make sure that they fit snugly. Go to the "Set up a microphone" section for additional connection information.
  • See the documentation for the microphone's hardware for information that is specific to the manufacturer. This information may include instructions to make sure that the sound card for the computer is seated and installed correctly, and that the correct drivers are available.
  • The speech recognition engine may be corrupted. To test, switch to a different speech engine if you have one. Go to the "Change speech recognition engines" section for more information. If the other engine is working correctly, reinstall the specific engine from the original source. If no engine is working correctly, reinstall the speech recognition engine from the original source or CD.

How to troubleshoot text-to-speech

If you cannot hear speech after you test the computer, one of the following conditions may be true:
  • The speaker volume is not turned up or is muted. Some speakers have external controls for volume and muting. Make sure that the volume is turned up sufficiently or that muting is turned off.
  • The speakers may not be selected as the current output device. To change this setting, click the Text-to-Speech tab, and then click Audio Output to make sure that the speakers are selected.
  • The speakers may not be connected correctly. See the speaker hardware documentation for more information. Make sure that the sound card for the computer is seated and installed correctly, and that the correct drivers are available. Go to the "Set up the speakers" section for additional connection information.
  • The text-to-speech engine may be corrupted. To test, switch to another engine. Go to the "Change speech recognition engines" section for more information. If another speech engine is working correctly, reinstall the specific speech engine from the original source. If no engine is working correctly, reinstall the speech recognition engine from the original source or CD.

If you experience reduced computer performance after you install speech recognition

After you install speech recognition, your computer's performance may be reduced. Speech recognition requires computer memory and can affect your computer's performance. To work around this issue, use one of the following methods:
  • Temporarily remove speech recognition as a text service when you are not using it. Go to the "How to remove speech recognition" section for more information about how to remove speech recognition as a text service.

    Note If you remove speech recognition as a text service, it is no longer an available text service and it is prevented from loading into memory. However, it is not deleted from your computer and you can add it again later.
  • Upgrade your computer processor.
  • Add RAM.

How to use speech recognition

For detailed information about how to use Microsoft speech recognition, click Help on the Language bar.

For the most up-to-date information about speech recognition developments at Microsoft, visit the following Microsoft Web site:
http://www.microsoft.com/speech/ (http://www.microsoft.com/speech/)
For additional information about how to use speech in Windows XP, click the following article numbers to view the articles in the Microsoft Knowledge Base:
306901  (http://support.microsoft.com/kb/306901/ ) How to use speech recognition in Windows XP
306899  (http://support.microsoft.com/kb/306899/ ) How to use speech recognition profiles in Windows XP
306902  (http://support.microsoft.com/kb/306902/ ) How to use text-to-speech in Windows XP
306993  (http://support.microsoft.com/kb/306993/ ) How to use the Language Bar in Windows XP
For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
278927  (http://support.microsoft.com/kb/278927/ ) WD2002: Part 1: Speech and handwriting recognition frequently asked questions

How to remove speech recognition

If you remove speech recognition, it is not deleted from your computer. Instead, speech recognition is no longer available as a text service and it is prevented from loading into memory. You can add it again later.

Note To remove the speech recognition engine from your hard disk, follow the instructions in the program that it was installed with, or use the Add or Remove Programs tool.

To remove speech recognition as a text service, follow these steps:
  1. Click Start, and then click Run.
  2. Type control intl.cpl in the Open box, and then press ENTER. The Regional and Language Options window is displayed.
  3. On the Languages tab, click Details under Text services and input languages.
  4. Under Installed services, click Speech Recognition under the language that you are using, and then click Remove.

NEXT STEPS

If these methods did not help you install speech recognition, you might want to ask someone you know for help. You can also use the Microsoft Customer Support Services Web site to find other solutions. Some services that the Microsoft Customer Support Services Web site provides include the following:
  • Searchable Knowledge Base (http://support.microsoft.com/search/?adv=1) : Search technical support information and self-help tools for Microsoft products.
  • Solution Centers (http://support.microsoft.com/select/?target=hub) : View product-specific frequently asked questions and support highlights.
  • Other Support Options (http://support.microsoft.com/default.aspx?pr=csshome) : Use the Web to ask a question, contact Microsoft Customer Support Services, or provide feedback.
If you continue to have questions after you use these Microsoft Web sites or if you cannot find a solution on the Microsoft Support Services Web site, click the following link to contact Support:
http://support.microsoft.com/contactus (http://support.microsoft.com/contactus)

Applies to
  • Microsoft Windows XP Professional
  • Microsoft Windows XP Home Edition
Keywords: 
kbenv kbhowtomaster KB306537
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