
You can, however, obtain an evaluation copy Contact Cepstral Support with subject line "Cepstral Windows SDK". In order to compile mod_cepstral.c under Visual Studio C++ you must ensure the Cepstral SDK is installed on your build machine. The '15' in the above example means 15% of default volume.įor other SSML tricks check out the examples on Cepstral's support site.

You should now be able to use something similar to the following in your dialplan You must define an environment variable SWIFT_HOME in the shell where you run fs, otherwise you won't hear any audio. If you don't use the default install dir (/opt/swift) you will need to modify `src/mod/asr_tts/mod_cepstral/Makefile`

You can also use a Cepstral voice with a language other than English without editing any files.

These instructions were developed under the old versions and possibly require updating for use with modern versions of Cepstral. Previously, the suggested version to use was 4.x since there were known issues with 5.1 (which is closed source). As of 2016.05.17 Cepstral version 6 is reported to work with FreeSWITCH.
