Print vs e-copy
While text to speech software is great with humanities and a majority of social sciences, they are not as good with science/math textbooks. It can only be a supplement at best for science.
1. Mangles and Winces.
2. Images
In general I find that the text-voice-output is too slow.
When I went to the PD Soros conference in New York last fall, I met another PD Soros fellow at Harvard Law who is also blind. His screen reader plays at 5x speed or more. He explained that he was hearing at the speed of reading with the eyes. That is his ears were acting like his eyes. Apparently, that is perfectly normal in the blind community.
I was rather relieved to know that my asking for a faster text-voice speed is not so unusual after all. And maybe reading much faster like visual scanning is not unusual either. I know my sensory system is all over the place, maybe my senses are compensating too.
Optimize Input-Output Time
A slower output (due to oral motor apraxia, fine motor and other issues) does not have to translate into slower input (absorption of cognitive material). I think that's how I've been able to manage academics time-wise. My output is clumsy and slow but my input is pretty fast. Which is probably the reverse for NT peers. They type away at enviable speeds.
Context and Mood dependent
Autism does not look the same every hour and every day. It's not predictable what the next hour will look like. Sometimes I'm more visual, other days I'm more auditory and some days I need both. Sometimes my mind is tired and sluggish and in a brain fog mode. Lots of causes - maybe a barometric pressure change, med effects, weather, you body just not there. There are days, not much sinks in visually. A text-speech reader of books is definitely helpful in those times as a supplement to tired eyes and tired brain. It's one more modality of input which can definitely help. A slower reader speed can potentially help those times.