SAPI is a standard Speech Application Interface developed by Microsoft.
Most Speech programs
and voices, including all NextUp.com products and voices,
use this microsoft speech interface to allow the program and voices to work
SAPI4 is an older version of the standard, supported by a wider variety of
voices, especially older voices. A newer version of this standard, SAPI5
is supported by most of the newer voices, with some voices, such as AT&T Natural
Voices supporting both interfaces. NextUp.com products support both SAPI4
Most versions of windows come with either SAPI4 or SAPI5 installed already, but
this is not always the case. There are times when you may need to install
one or both of these on your computer in order to allow Text To Speech programs
to work, or to take advantage of some features.
If you have any questions on this, please let us know at
Downloading and installing SAPI5 - WINDOWS XP AND EARLIER ONLY
Versions of windows 2000, and XP typically already have SAPI5 installed, but
you may wish to install it again if you are having problems. Download and run the file below. If you
have problems contact us, as you may not have windows installer on your computer
and we can provide help with that.
after installing, reboot your computer (restart windows) to
make sure installation is complete.
Downloading and installing SAPI4
SAPI4 is not typically installed on computers, although some speech programs
will install it automatically. To install SAPI4, download and run the
installation program below. NOTE: because SAPI4 is an older standard, on
some newer versions of windows, you may see notices during install about
installing older files over newer ones. It is important that you answer
"No To All" to this question.
SAPI is a windows interface, and from time to time it
can get broken by installation of some programs, or by incomplete windows
updates. If you are having trouble, we have a lot of experience in
debugging these problems, so please just
Get Better Voices:
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