Text-to-speech (TTS) uses computer-generated synthetic speech to read out text and for those who struggle to read the printed word it provides an essential form of access. It is built into most new smartphones, tablets and other computers, and third-party applications .
Alternatively there is a website called ttstool (https://ttstool.com/) that allows generation of TTS in a range of voices with the ability to save and download the resulting audio as an MP3 file to the local machine. Simply select the text you want to convert using copy (CTRL+C) from the PDF file and then paste it (Ctrl+V) into ttstool‘s online portal. Select the platform TTS platform to use (Amazon or Microsoft), the required voices and preferences and then download. This will create an audio file of the text using the selected TTS voice and download it onto the local machine. The resulting MP3 could be played and used as any other audio file.