I think that David's advice was pretty good.  The AT&T, Ivona, Neospeech and
other modern SAPI voices are concatenative synthesizers.  They need to throw
more than a hundred megabytes of data around in order to string speech units
together.  When you alter their speed or pitch, they have to work a little
harder, still.  DecTalk and Eloquence speech will always be a lot more
responsive because they compute speech parameters and generate audio from
scratch, rather than having to look up the speech units in a database.
Microsoft Sam, Mike, Ana  and Mary fall in between on the processor
utilization scale, I think.

I don't know whether any of our technology is taking advantage of multi-core
processors or not.  But disk and memory access may still be a bottleneck.
If you want to run these high-end synthesizers, you'll have to limit what
other stuff is running simultaneously.

Lloyd Rasmussen, Kensington, Maryland
Home:  http://lras.home.sprynet.com
Work:  http://www.loc.gov/nls
 

> -----Original Message-----
> From: Jenine Stanley [mailto:[email protected]]
> Sent: Friday, May 06, 2011 8:32 AM
> To: [email protected]
> Subject: speech breaking up and distorting
> 
> I have 2 computers and they both are having an odd issue lately with their
> synthesizers. Both run WE 7.5
> 
> Desktop runs Windows7, with Ivona Kendra speech synthesizer.
> 
> From time to time the speech will break up, like an old radio that's
> poorly
> tuned. Sometimes also when adjusting the pitch, which I like at 2, the
> speech will become distorted as if it's too loud though the volume hasn't
> changed at all. The breaking up tends to fix itself but the distortion
> requires a complete reboot of the computer, not just shutting down WE and
> restarting.
> 
> Laptop is running Windows XP with the AT&T Crystal synthesizer. I have WE
> start prior to log in and nothing has changed with the DECTalk speech. The
> last several days, when I boot up, and the speech changes over to Crystal,
> the voice is very distorted as if through a bad AM radio speaker. This is
> continuous, unlike the desktop computer issue. The only way to fix it is
> to
> exit WE and restart it. Then the speech returns to normal.
> 
> Any idea what might be going on here?
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