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Re: ViaVoice Outloud, PulseAudio and Ubuntu 11.04



Hi Tim,

Can you make any comments regarding the latency of the viavoice server
with this setup?

Cheers

Bart
 
On Wed, 18 May 2011 14:50:16 +1000, "Tim Cross" <tcross@une.edu.au> wrote:
> 
> I'll preface the following by saying that this is only an outline of my recent
> experiences and others may not have as much luck. Issues, such as sound card
> type and manufacturer, ALSA driver support etc, means there can be a lot of
> variation in this area. 
> 
> A while back, I posted to this list regarding the success I had achieved with
> espeak and pulse audio. I reported that I'd found that the emacspeak espeak
> driver, compiled with portaudio support did not work well. It was sluggish and
> had a tendency to chop off ends of words or skip words. I found that
> re-compiling it against pulseaudio rather than portaudio fixed these issues. 
> 
> At the time, despite numerous different strategies, I was never able to get
> good quality ViaVoice outloud output with pulse audio. In fact, I had never
> been able to get good quality outloud output without customizing ALSA via a
> .asoundrc file.  
> 
> Recently, I have upgraded my system to Ubuntu 11.04. I decided to re-examine
> matters and see if I could get a better outcome. One problem I had with the
> existing setup was that when running emacspeak and the outloud server, pulse
> audio was blocked and so I could not run any app built with pulse audio. 
> 
> Given this was an upgrade and had lots of new libraries, my first step was to
> remove all alsa and pulse audio configurations. I removed my .asoundrc file and
> restored all pulse settings to their default, rebooted the system and then
> started playing around to see what I needed to do to get as much working as I
> could. 
> 
> The outcome was surprising. For the first time ever, all my sound related
> systems on this desktop are working 'out of the box'. I have Outloud running
> via pulse audio, can run multiple sound sources, both pure ALSA and pulse audio
> systems simultaneously and have full control over each independently of each
> other. 
> 
> The system I am using is a Dell 32bit desktop with an internal 'on-board'
> soundcard from Intel. I'm running Ubuntu 11.04. This system has been running
> Ubuntu since 8.04 and has only been upgraded and not re-installed since its
> original setup. 
> 
> Looks like Linux sound support is really beginning to mature and provide
> similar functionality to what is common on other more expensive and locked down
> solutions. 
> 
> Tim
>  
> -- 
> Tim Cross
> Information Technology 
> University of New England
>  Phone: +61 2 6773 3210
> Mobile: 0428 212217
>    Fax: +61 2 6773 3424
> E-Mail: tcross@une.edu.au
>    Web: http://www.une.edu.au/itd
> ---
> Please avoid sending me Word or PowerPoint attachments.
> See http://www.gnu.org/philosophy/no-word-attachments.html
> 
> Any fool can make things bigger, more complex, and more violent. It takes a
> touch of genius (and a lot of courage) to move in the opposite direction.
>                                                            âAlbert Einstein
> 
> 
> 
> 
> 
> 
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