Re: [orca-list] Has anyone ever gotten Orca and Pulse Audio to work together well?

[Jacob Schmude <j schmude gmail com>]

Hi
I've gotten them to work together without a delay, but that was with gnome-speech. Speech dispatcher seems to 
be rather unstable when espeak is used through Pulseaudio. I got rid of the delay by changing the resample 
method in daemon.conf. Ubuntu has its default set either to src-linear or ffmpeg, depending on the version of 
Ubuntu. Change this to the value:
speex-float-3
This got rid of the delay and, incidentally, improved my resample speed and quality by a good margin. I 
haven't done much with Orca lately nor speech dispatcher, so perhaps the stability situation in sd with 
espeak has improved.


On Dec 12, 2009, at 12:43, Bill Cox wrote:

> I'm trying to narrow down where the problem is that causes the 1/2
> second delay when Orca tries to read text using pulseaudio.  Is it in
> pulseaudio's main code trunk, or in Ubuntu's version of pulseaudio?
>
> I have googled, but was unable to find a single instance where a blind
> user was able to get Orca working well with Pulse Audio, without the
> 1/2 second delay.  I've also been able to convince myself that most of
> the issues listed on
>
>    http://pulseaudio.org/wiki/UbuntuBugs
>
> are not causing the problem.  In particular, I was able to run
> pulseaudio with nice -11 and rtprio 9, and the delay is still there.
> I haven't yet dealt with the out of date libcanberra.
>
> Do any of you know of any case where pulseaudio has been configured to
> deliver speech from Orca without the delay?  Is this simply a problem
> now because Ubuntu was the version most blind users preferred before
> Ubuntu switched to pulseaudio?  Has this problem been there forever?
>
> Thanks,
> Bill
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