SlideSpeech is a website and app (iOS and Android) that allows you to upload presentations, add computer-generated voiceovers to your presentation notes, and share the resulting audio slideshow.
Here is the demo on the SlideSpeech site, with a female British voiceover:
Here is a slideshow I made for the first week of classes last year (sorry about the buggy last frame … I’m working on revising it for next year), with both American female and British male voiceovers.
The iPad app is a bit slow if you have many slides and/or images, but it looks fine:
Try it out, and if you have questions about how to use it, we can have some tutorial time in class.