Re: Orca speech rate and other Gnome settings

["Christophe Strobbe" <strobbe hdm-stuttgart de>]

Hi Javi,


Am Fr, 11.01.2013, 19:49 schrieb Javier Hernández Antúnez:
> Hi Christophe!
>
> answers between the lines

Thanks for the answers. Some more points inline.


>
> 2013/1/11 Christophe Strobbe <strobbe hdm-stuttgart de>:
>> Hi,
>>
>> The speech rate for Orca has values from 0 to 100. Can anyone tell me
>> whether this is a linear range (i.e. 100 would be twice as fast as 50)
>> and
>> how these values map to words per minute?
>>
>
> Although the speech rate is managed by Orca, AFAIK, the speech rate
> value is related to the specific speech engine.
> So in case you're using espeak, the speech rate is mapped with words
> per minute as is described here:
> http://espeak.sourceforge.net/speak_lib.h
> There, you can see the following line:
>       espeakRATE:    speaking speed in word per minute


Thanks for the pointer. I found that eSpeak expects values between 80 and
450 (default: 175) - at least on the command line:
<http://espeak.sourceforge.net/commands.html>
So I assume there is a conversion somewhere between the Orca Preferences
and the call to the eSpeak TTS. I didn't find that kind of conversion in
speak_lib.h (nor in several other source files from eSpeak).
The values in the Orca Preferences (0-100) clearly don't represent words
per minute.


>
>> I found that my Ubuntu 12.04 installation stores Orca settings at
>> ~/.local/share/orca/user-settings.config, but I would also like to find
>> out:
>> * where the magnifier settings are stored, and
>
> The magnifier settings are managed by GSettings, and you can see all
> the available settings described in the
> "org.gnome.desktop.a11y.magnifier" gsettings schema.

Thanks. I have now found out that I can get the list of keys by entering
gsettings list-keys org.gnome.desktop.a11y.magnifier
in a terminal, and a specific setting by entering
gsettings get org.gnome.desktop.a11y.magnifier [KEY]


>
>> * where the settings for the background colour are stored.
>>
>> Apparently, the theme information in
>> ~/.gconf/desktop/gnome/shell/windows/%gconf.xml uses the same string for
>> High Contrast and for High Contrast Inverse, i.e.
>> <entry name="theme" mtime="1357734678" type="string">
>>   <stringvalue>Adwaita</stringvalue>
>> </entry>
>> That's why I am trying to find out where background colour is stored.
>
> In the "org.gnome.desktop.background" gsettings schema you can find
> background-related settings but I'm not sure if these settings suits
> your needs or if you'll need to make some modifications on the Adwaita
> (or whatever theme is used) theme description. So ping me back if you
> need more help on this.
>

I found that
gsettings list-keys org.gnome.desktop.background
gives me a list that contains keys like "primary color" and "secondary
color". So I'll check the effect of different background settings on these
keys.
(At some point, we will need to know what to do to activate High Contrast
or High Contrast Inverse in Gnome from the Cloud4all system.)

Best regards,

Christophe

>
>>
>> Any help would be greatly appreciated.
>>
>> Best regards,
>>
>> Christophe
>
> Hope you'll find this information useful.
>
> Best regards,
> Javi
>
>
>>
>> PS: This is for the Cloud4all project that Javi introduced earlier this
>> week. I am documenting this info in the GPII/Cloud4all wiki at
>> <http://wiki.gpii.net/index.php/Cloud4all_Testing:_Essential_Registry_Terms>.
>>
>> --
>> Christophe Strobbe
>
>
> --
> Javier Hernández Antúnez
> <jhernandez emergya com>
>


-- 
Christophe Strobbe
Akademischer Mitarbeiter
Adaptive User Interfaces Research Group
Hochschule der Medien
Nobelstraße 10
70569 Stuttgart
Tel. +49 711 8923 2749