[hts-users:01666] Re: Stability problem using LSP

Subject: [hts-users:01666] Re: Stability problem using LSP

From: "Geoffrey Wilfart" <geoffrey.wilfart@xxxxxxxxx>

Date: Tue, 9 Sep 2008 10:10:39 +0200

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Hi Keiichiro,

Thank you for your answer. I have already used both, and never got any issue when using mel-cepstrum parameters.

I was willing to use generalized LPC-LSP parameters on mel scale, as they're reported to give the best MOS in:

H. Zen, T. Toda, K. Tokuda, "The Nitech-NAIST HMM-based speech synthesis system for the Blizzard Challenge 2006", IEICE Trans. on Information and Systems, 2006.

Thanks,

Geoffrey

2008/9/8 Keiichiro Oura <uratec@xxxxxxxxxxxxxxx>

Hi, Geoffrey

To separate a duration problem and a LSP stability problem, you should try to use mel-Cepstrum parameter for spectrum.

Regards,
Keiichiro Oura

Geoffrey Wilfart wrote:

Dear all,

I have run an experiment training a model on 24-order LSP coefficients + LF0 for alpha=0.42 and gamma=3.

The training went well, and I'm able to synthesize some sentences.

However, the models seem sensitive to duration models, and I have encountered problems when synthesizing speech from training labels, with imposed segmentation, or using a third-party duration model.

I have tried to use lspcheck for stability, without success.
Do you have any idea with is this ?

Thank you,

Geoffrey