[hts-users:01618] Re: GV causes clipping

[Leon Zhang <leonzh@xxxxxxxxxxxxx>]

Thanks for your information. I read the paper of GV and found it is promising for me, could you please tell me where I can download the sample wave pair to demonstrate the effectiveness of GV. Both lsp and mel-cepstral are welcomed.

Thanks
Leon

-----Original Message-----
From: Heiga ZEN (Byung Ha CHUN) [mailto:zen@xxxxxxxxxxxxxxx]
Sent: Thursday, July 31, 2008 2:59 PM
To: hts-users@xxxxxxxxxxxxxxx
Subject: [hts-users:01603] Re: GV causes clipping

Hi,

Leon Zhang wrote (2008/07/31 7:32):

> I am interesting at the voice quality improvement by GV,
> who can tell me your observation? I am using lsp to build HTS system,
> is GV able to improve voice quality too?

GV is effective for LSPs, but usually its improvement is relatively smaller than
  that with mel-cepstral coefficients.  Furthermore, the use of GV with LSPs
sometimes causes disorders of LSPs, it means that the synthesis filter becomes
unstable.  Rearranging LSPs by post-processing can avoid it, but it introduces
artifacts in synthesized speech.

Best regards,

Heiga ZEN (Byung Ha CHUN)

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  Heiga ZEN     (in Japanese pronunciation)
  Byung Ha CHUN (in Korean pronunciation)
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