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<div class="moz-cite-prefix">GraphHopper itself is a Java routing
library.<br>
<br>
A navigation via text or voice (I presume in Android) is an
additional component of the actual navigator app (where GH plays a
specific role).<br>
<br>
So in the app you can implement a text-to-speech for the retrieved
instructions or even use pre-recorded words.<br>
<br>
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<div class="moz-signature">-- <br>
<font color="#000000">Emux</font><br>
<a href="http://wiki.openstreetmap.org/wiki/Cruiser">Cruiser</a> -
<a
href="http://wiki.openstreetmap.org/wiki/Atlas_%28navigation_application%29">Atlas</a></div>
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