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Re: ViaVoice outloud on 64bit Ubuntu



I've rolled back to the version from emacspeak 35, and nuked the
#ifdef blocks that were clearly not useful to anyone.

I've also checked in the last snapshot of the "new version" as
new-atcleci.cpp.

I may not have much more time to look at this, so if you or
someone else here has time to play with it -- go for it.

In the new-atcleci.cpp what was done was:

1. Take aplay.c from alsa  1.0.25
2. Copy out the xrun and suspend routines from that version into
atcleci.cpp
3. Update the corresponding pcm_write function in atcleci.cpp 



>>>>> "Tim" == Tim Cross <tcross@une.edu.au> writes:
    Tim> Hi Raman, I will experiment with past revisions and try
    Tim> to identify the 'best' version.
    Tim> 
    Tim> Note that I've been using the 'previous' version
    Tim> (previous to recent changes) for quite some time under
    Tim> pulseaudio with no significant problems apart from
    Tim> outloud segfaulting a few times a day. For me, the
    Tim> responsiveness was only a little less snappy than it is
    Tim> with the recent updates and did not suffer from the
    Tim> repeated utterance artifact issue. The main potential
    Tim> advantage of the recent changes was that it appeared to
    Tim> make the server more stable.
    Tim> 
    Tim> Bart, I believe that if you add a .asoundrc to your home
    Tim> directory, outloud will use native alsa and not use
    Tim> pulseaudio. However, you will run into device contention
    Tim> if you have another device trying to access the sound
    Tim> hardware, so make sure all other sound apps are stopped.
    Tim> 
    Tim> I will post the output from the 'good' version in case
    Tim> that can help with diagnostics etc. However, I may not
    Tim> have access to do this until Monday.
    Tim> 
    Tim> Tim
    Tim> 
    Tim> T. V. Raman writes:
    >> 
    >> On the plus side, I can now produce the problem on my home
    >> machine if I tweak my .asoundrc -- so there is
    >> card-specific asoundrc complexity biting again.
    >> 
    >> An interesting test to try is to ask mplayer to play .flv
    >> files using -vo null -- and see if the audio stutters ---
    >> if it does, then you also see the buffer underrun and
    >> consequently the artifacts Bart and Tim have seen.
    >> 
    >> I'm almost tempted to roll back all the way back to last
    >> week at this point.
    >> 
    >> Bart/Tim, since yyyyou initially said things got better
    >> for you, let me know the checkin that that corresponded to
    >> -- for no wI'll go to 7548.
    >> ---
    >> 
    >> 
    >> >>>>> "tvr" == T V Raman <tv.raman.tv@gmail.com> writes:
    tvr> Could you try with pulseaudio out of the picture? I'm
    tvr> not using pulse on any o fmy machines, and am not seeing
    tvr> breakage with char echo --- also, each commit Imade was
    tvr> working fully on my machines when I committed them.
    tvr> 
    >> >>>>>> "Bart" == Bart Bunting <bart@ursys.com.au> writes:
    Bart> Hi, Rev 7548 is the last good commit. After this the
    Bart> artifacts are still there but character echo is almost
    Bart> toatlly broken.
    Bart> 
    Bart> Here is the output when starting the outloud script:
    Bart> 
    Bart> bart@yap:~/emacs/lisp/emacspeak/servers$ ./outloud ALSA
    Bart> <-> PulseAudio PCM I/O Plugin Its setup is: stream :
    Bart> PLAYBACK access : RW_INTERLEAVED format : S16_LE
    Bart> subformat : STD channels : 1 rate : 11025 exact rate :
    Bart> 11025 (11025/1) msbits : 16 buffer_size : 5513
    Bart> period_size : 1378 period_time : 125000 tstamp_mode :
    Bart> NONE period_step : 1 avail_min : 1378 period_event : 0
    Bart> start_threshold : 5513 stop_threshold : 5513
    Bart> silence_threshold: 0 silence_size : 0 boundary :
    Bart> 1445199872 allocating 2756 samples output buffered to
    Bart> waveBuffer with size 2756 ALSA <-> PulseAudio PCM I/O
    Bart> Plugin Its setup is: stream : PLAYBACK access :
    Bart> RW_INTERLEAVED format : S16_LE subformat : STD channels
    Bart> : 1 rate : 11025 exact rate : 11025 (11025/1) msbits :
    Bart> 16 buffer_size : 5513 period_size : 1378 period_time :
    Bart> 125000 tstamp_mode : NONE period_step : 1 avail_min :
    Bart> 1378 period_event : 0 start_threshold : 5513
    Bart> stop_threshold : 5513 silence_threshold: 0 silence_size
    Bart> : 0 boundary : 1445199872 %
    Bart> 
    Bart> On Wed, 7 Mar 2012 18:08:32 -0800, "T. V. Raman"
    Bart> <tv.raman.tv@gmail.com> wrote:
    >> >>> Tim and Bart,
    >> >>> 
    >> >>> That is indeed strange --- am still not able to
    >> reproduce >>> the issues.
    >> >>> 
    >> >>> I did one more clean up pass -- do an svn update and
    >> try >>> again.
    >> >>> 
    >> >>> If the problems persist, run the tcl script at the
    >> shell, >>> and send me the device configuration it
    >> outputs.
    >> >>> 
    >> >>> I'm typing this on my laptop with outloud doing the
    >> >>> talking, and I dont have character echo going away --
    >> nor >>> do I see the stutter Bart mentioned when using
    >> voice-lock
    >> >>> -- 
    >> >>> 
    >> >>> -- 
    >> >>> 
    >> >>> -- 
    tvr> 
    tvr> -- Best Regards, --raman
    >> 
    >> -- 
    >> Best Regards, --raman
    >> 
    >> -----------------------------------------------------------------------------
    >> To unsubscribe from the emacspeak list or change your
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    >> "emacspeak-request@cs.vassar.edu" with a subject of
    >> "unsubscribe" or "help".
    >> 
    Tim> 
    Tim> -- Tim Cross Information Technology University of New
    Tim> England Phone: +61 2 6773 3210 Mobile: 0428 212217 Fax:
    Tim> +61 2 6773 3424 E-Mail: tcross@une.edu.au Web:
    Tim> http://www.une.edu.au/itd --- Please avoid sending me
    Tim> Word or PowerPoint attachments. See
    Tim> http://www.gnu.org/philosophy/no-word-attachments.html
    Tim> 
    Tim> Any fool can make things bigger, more complex, and more
    Tim> violent. It takes a touch of genius (and a lot of
    Tim> courage) to move in the opposite direction. âAlbert
    Tim> Einstein
    Tim> 
    Tim> 
    Tim> 
    Tim> 
    Tim> 

--
Best Regards,
--raman

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