Go to IBM's ViaVoice TTS website a http://www-4.ibm.com/software/speech/dev/ttssdk_linux.html.
Scroll down to the Downloads section, and click on the Downloads link. You will be asked to provide a username and password before you download anything.
Download the following files:
ViaVoice TTS SDK for Linux V5.1. The filename is viavoice_tts_sdk_5.tar.
ViaVoice TTS Run Time Kit for Linux V5.1. The filename is viavoice_tts_rtk_5.tar.
Type the su root command and provide the root password to log on to your system as root.
Type the cd command to change to the directory that contains the files you just downloaded.
Untar the RTK using the command tar -xvf viavoice_tts_rtk_5.tar. You should now have two files in your directory, ttsrt_readme.txt and ViaVoice_TTS_rtk_5.1-1.2.i386.rpm.
Unpack the rpm using the command rpm -i ViaVoice_TTS_rtk_5.1-1.2.i386.rpm. You will be given a license agreement to read. You can press the spacebar to scroll through the document. When you've read the document, you'll be returned to the command prompt.
Type the command source /etc/profile to finish installing the RTK.
Change directories to the directory that contains the SDK file you downloaded.
Untar the SDK file using the command tar -xvf viavoice_tts_sdk_5.tar. You should now have two files in your directory, ttssd.readme.txt and ViaVoice_TTS_sdk-5.1-1.2.i386.rpm.
Unpack the rpm using the command rpm-i --nodeps ViaVoice_TTS_sdk-5.1-1.2.i386.rpm. You will be given a license agreement to read. You can press the spacebar to scroll through the agreement. When you've read the document, you'll be returned to the command prompt.
Type the cd command to change to the /usr/lib/ViaVoiceTTS/samples/cmdlinespeak/ directory.
Type the command ./runcmdlinespeak at the prompt. You should hear your computer say "Hello, welcome to ViaVoice Outloud for Linux." Normal system volume is often very low, so you may not be able to hear it very well. Refer to, Troubleshooting, for information on how to increase your system volume.
If for some reason your test was not successful, refer to the installation notes provided with both the RTK (ttsrt.readme.txt) and the SDK (ttssd.readme.txt) for debugging information.