To improve accessibility and usability of content, we use Amazon's Polly neural network service to convert finished text to a lifelike recording. This is a one-time cost. If the content is updated, then the fee will need to be paid again to update the recording to match the new text. If you would like to remove the text-to-speech file or prevent it from showing on the chapter, delete the content of the "External Audio" field in the chapter Settings.

Voices We use the voices provided by Amazon Translate. Not all Amazon voices may be available at present. If you would like to request a particular language or voice, please let us know. We are happy to provide you with a choice of voices.