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DESCRIPTION
Cepstral Voices... Cepstral is a speech technology company based in Pittsburgh, PA, USA which provides speech technologies and services for the spoken delivery of information. We build high quality, natural sounding voices (which integrate directly with the Apple Speech Manager) for hand-held, desktop, and server applications. Cepstral: We Build Voices.
WHAT'S NEW
Version 5.1 release notes are available.
REQUIREMENTS
Mac OS X 10.2 or later.

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SCREENSHOT

Developer:Cepstral LLC
Downloads:20,997
  - Version d/l:756
Multimedia & Design:Audio
License:Demo
Date:26 Jun 2008
Platform:PPC/Intel
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Cepstral Voices User Reviews (8 posts)Write A Review
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Mar 17 2007
*****

PENNYHEAD1  I have been using the Cepstral Diane voice for about a year. Works great and the voice is much better than any of the canned Apple voices. Just a bit more tweaking is all that's needed as there are a few pronunciation errors and a slight wavering can sometimes be heard. All-in-all the application is A #1.  
(Version 4.2)

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Mar 27 2007

JEFF EDSELL  I'm trying the Callie demo voice and I really like it -- EXCEPT for the burbling sound you mention. How can the voice be tweaked to improve that?  
(Version 4.2)

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Mar 27 2007

PENNYHEAD1  You can't tweak the voice through any interface except to slow it down using the speech preferences. This doesn't help. Try using the Cepstral Diane voice which is way better in sound quality. Good luck!  
(Version 4.2)

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Mar 17 2007

BUBUMAC  For me, the best text-to-speech software is infovox ivox :

http://www.assistiveware.com/voicedownload.php?lang=english  
(Version 4.2)

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Jul 28 2006

ZOOKEEPER  Compare TTS voices at http://www.tmaa.com/tts/Samples_intro_USEng.htm and you will likely find that Loquendo voices are the best-of-breed.   
(Version 4.1.2)

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Jul 8 2006

ABSPJL  These really are MUCH better than the Mac OS voices. If you use spoken text and spoken alerts much, you will find these natural voices well worth paying for. And they can be tried for free!  
(Version 4.1)

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Jul 28 2006

HOLYPOLY  The files are also MUCH larger than Apple's voices...  
(Version 4.1.2)

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Jul 28 2006

ABSPJL  Yes, but that is only a problem with older Macs. They work well in iSpeakIt.  
(Version 4.1.2)

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Mar 14 2006

BILLKLEE  The demos on their demo page do nothing, and make no sound whatsoever. I'm unimpressed.  
(Version 4.0.3.1)

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Jul 28 2006

MAKAI  Initially, the text labelling on the demo interface did confuse me as well. Basically,

- you enter some sample text

- then you click the "Say it" button which processed the entered text to audio

- afterwards you'll find the common QT player controls right under the text input frame. *There*, click the Play triangle to hear your text spoken.  
(Version 4.1.2)

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Sep 24 2005

ANONYMOUS  What are the limitations of the demo voices? It's a big download just to check it out...  
(Version 3.4.2)

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Sep 24 2005

MART°N  The demo voices will read 2-3 sentences and then speak somethink like "this voice is not registered" then read 2-3 sentences and then speak somethink like "this voice is not registered, to register it, visit www.cepstral.com and buy a licence".

This will go on all the time. So you could test the voice(s) with all the text you'd like to hear a demo from but if you listen too long those breaks will annoy you.  
(Version 3.4.2)

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Feb 3 2006

NERFGUN  If you go to http://www.cepstral.com/demos/ you can try out the voices without downloading anything. Some of them are quite amazing.  
(Version 4.0.1)

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Apr 11 2005
***½.

MARC NOTHROP  These voices really are a lot better than the bundled voices from Apple, which haven't changed in years; syllables are clearer, and more natural sounding, and there are non-American accents, which are a welcome option, for some. These voices could make text-to-iTunes/iPod for RSS feeds, reading eBooks etc. truly feasible. (no, nothing to do with the company!)  
(Version 3.2.1)

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Oct 9 2008

KOSOVAR1  THIS IS OUTRAGEOUS. THERE IS A NEW VERSION OF Cepstral Voices WITH AN UPGRADE FEE. HOWEVER, THERE ARE PAGES AND PAGES OF ISSUES ON THE CEPSTRAL WEBSITE THAT SHOW THAT THIS VERSION 5 DOESN'T WORK and can crash your system. THE VERSION I PAID FOR STOPPED WORKING AND THE NEW VERSION BARELY, BARELY WORKS. WHO WANTS THAT??? THIS SHOWS ALL THE WAYS THAT THE NEW VERSION STILL DOESN'T WORK. IF CEPSTRAL CAN'T SPEND THE TIME AND MONEY TO MAKE THEIR PRODUCT WORK WITH THE NEWEST MACOS, THEY SHOULD ABANDON IT AND STOP RIPPING PEOPLE OFF WHO DON';T KNOW WHAT THEY'RE PAYING FOR!!! HERE IS AN ABBREVIATED LIST OF DEFICIENCIES IN THIS SOFTWARE THAT IS POATED ON THE COMPANY'S OWN WEBSITE. AT LEAST THE COMPANY IS BEING UPFRONT BUT THEY STILL WANT TO TAKE YOUR MONEY AND GIVE YOU JUNK IN RETURN.

1. The voices may go silent due to the system's audio properties having been adjusted to incompatible settings.

2. Cepstral voices stop speaking sometimes when used in VoiceOver. They will not speak again through VoiceOver until you log out and log back in. This problem occurs mostly if you use Command+Tab to switch between tasks or if you use Ctrl+Option+D to move the cursor to the dock and cycle through dock items.

3. When reading text copied from Safari, line breaks may occasionally be pronounced as question marks.

4. Word highlighting text positions are wrong when the volume is not set to 1.0.

5. Text position information passed to user callbacks is incorrect with certain settings, causing word highlighting to break.

6. Apple's pronunciation dictionaries are not supported. You can still use cross-platform Cepstral user lexicons, however.

7. Synthesis to phonemes -- the TextToPhonemes() API call -- is not supported.

Error and synchronization callbacks are not supported.

8. When stopping speech, the synthesizer will always halt immediately, instead of waiting until the next word or sentence when requested.

9. Tuned phonetic input -- the [[inpt tune]] embedded command -- is ignored.

In phonemes mode, all prodosic control symbols, with the exception of primary syllable stress, are ignored.

10. Some linebreaks are pronounced as "dot question mark."

11. If you use the Migration Assisant to transfer data and programs from one Mac to another, including Cepstral voices, your Cepstral voices may not function properly on the new computer.

12. If you enable "Announce the Time" under Date & Time preferences and set it to use a Cepstral voice, you cannot change the voice afterwards, even to a different Cepstral voice. Even if you set it to "Use System Voice," it continues to use your selection. Logging out and/or restarting do not solve the problem.

13. "interpret-as" attributes of "" elements are not properly handled.

If the input text contains back-to-back SSML elements, swift only handles the 14. last one in the list. For instance, the following only pauses for three seconds instead of five:

15. RIFF audio files with a sampling rate that differs from the native sampling rate of the voice are not correcly resampled when specified using the SSML element.

16. Applications using Swift TTS exit silently when a sentence that begins with an SSML or tag is fed to a non-US English voice for synthesis.

17. Swift does not currently support the xml:lang attribute of SSML tags that make use of it, such as , , etc.

18. Swift does not reject bad SSML markup. It will complain about blatant syntactic errors, such as missing close tags, but not about semantic errors, such as invalid tags and attributes.

19. The SSML and tags may not have the proper effect. This is supposed to be read as two sentences, but we read it as one:

20. Swift does not currently support the SSML tag for adding additional lexicons.

21. The SSML tag:attribute pair should select a neuter-gendered voice, but it currently does nothing.

22. The "age" attribute to the SSML tag is looking for an exact match, when it probably ought to be looking for the closest match. For instance, will only select a ten-year-old voice, or fall back to the default voice if one is not found.

23. Cannot provide multiple voice selections in the SSML tag. The tag should request David, and use William as a fallback. Instead, Swift interprets as a request for a voice named "David William."

24. The default SSML voice may not be the default voice for that gender. To illustrate, Swift may switch voices while executing the following SSML code, when it should not.

25. Changing voice in SSML resets prosody and pitch.

26. The duration attribute of the SSML tag is not supported.

27. Prosody as specified in the SSML prosody element is not applied to output generated using the SSML phoneme element.

28. Pitch contours passed in via the SSML tag with values not falling between 0% and 100% are supposed to be ignored. Swift attempts to synthesize with these bogus values.

29. SAMPA stress markers in SSML tag not supported.

30. The SSML tag causes a crash in Canadian French, Americas Spanish, and Italian voices.

40. Text position synthesis event information is incorrect when the SSML element is encountered.  
(Version 4.2.1)

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Nov 9 2008

KOSOVAR1  To those of you who have also had your external LaCie drives ruined by the first version 2 updater, understand that you don't need to throw away everything. The circuitry inside the drive housings may have been rendered useless, but the IDE drives inside are perfectly intact. You can remove these and use them in other computers or third-party drive housings. As for the drive housings, well, I'm not sure what good they are without their circuitry boards. Maybe they could be used for spaghetti strainers or ultra-modern-style flowerpots. I just threw all three of mine away because I got angry at LaCie every time I looked at them.

BEWARE LACIE!!! They will f**k you up and then lie about it. (See my previous posts.)   
(Version 5.1)

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