[Blindmath] dlmf and screen readers

[Neil Soiffer]

This is a bug in MathPlayer when interpreting the combinatorial notation.
Thankfully, it is an easy fix to make:

Change to a directory like C:\Program Files (x86)\Design
Science\MathPlayer\Rules\en (the path may be slightly different depending
on your machine).

If you are using ClearSpeak, open the file ClearSpeak-en.tdl in your
favorite text editor (e.g., notepad). You probably need to change it from
read-only to writeable. Look for the line containing "linethickness".
Change that line from
   count(match)==3 && name($1)=="mfrac" && $1.linethickness==0 )
to
   count(match)==3 && name($1)=="mfrac" && ($1.linethickness=="0"  ||
$1.linethickness=="0pt") )

If you are using Simple Speech, do the same for simple-speech-base.tdl.

It's not a bad idea to change both files just in case...

This is not a perfect fix, but it does make it work for the way dlmf
generates this notation.

Neil Soiffer


On Fri, Jan 13, 2017 at 6:19 PM, Łukasz Grabowski via Blindmath <
blindmath at nfbnet.org> wrote:

> Hello,
>
> Digital Library of Mathematical Functions has some mathematics
> resources in mathml, but so far I am not able to read it with NVDA
> correctly. For example:
> http://dlmf.nist.gov/1.2
>
> The very first equation  1.2.1 which defines the
> binomial coefficient is not spoken at all. Does it work fine for some
> NVDA users?
>
> I'm using Windows 7, Firefox 48, NVDA 2016.4 and newest mathplayer
>
> Best,
> Łukasz
>
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