[hts-users:01667] Re: Stability problem using LSP

["Nicholas Volk" <nvolk@xxxxxxxxxx>]

Geoffrey,

Check for every state in every label that it's duration is greater than 0.

br,
  Nicholas

> 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
>>>
>>>
>>
>>
>