If you are already are a Cepstral customer with existing port licenses, and want to replace or supplement an existing voice with the Allison text-to-speech voice, you may purchase the Allison voice license separately. It will use your existing port license files.
NOTE: You must also purchase port licenses to properly use the voice. If you do not, the voice will continually ask that you purchase them, making it unusable for production applications.
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