[hts-users:03614] Re: dynamic window specification

["Heiga ZEN (Byung Ha CHUN)" <heigazen@xxxxxxxxxx>]

Hi,

2013/2/15 那兴宇 <nxy-yzqs@xxxxxxx>:

> I ran some artificial data for calculating WUW matrix, in matlab.
> In the HTS codes, the 'wuw' matrix is set length*width, and
> width=2*max_width+1.
> By default, width=3, so 'wuw' is a TX3 matrix.
> By observing the data in matlab, I found that the number of non-zero
> elements in each row of WUW is 5, but the matrix is symmetrical, so is it
> the reason why 'wuw' was set to restore only the upper or lower block of the
> complete matrix WUW?

Yes.

> And was the Cholesky decomposition and following substitutions specially
> implemented for this data structure?

Yes.

Heiga

> At 2013-02-15 01:25:47,"Heiga ZEN (Byung Ha CHUN)" <heigazen@xxxxxxxxxx>
> wrote:
>>They are the same.  However, to avoid confusions, I recommend you to use
>>
>>5 1.0 1.0 [-2.0] 1.0 0.0
>>
>>for this case.
>>
>>I personally think that it was my mistake to introduce the following code.
>>
>>     if (fsize % 2 == 0)
>>         win->r_width[i]--;
>>
>>Regards,
>>
>>Heiga
>>
>>
>>2013/2/14 那兴宇 <nxy-yzqs@xxxxxxx>:
>>> Hi all,
>>>
>>> In current MLPG implementations, either HMGenS or hts_engine_API, the
>>> default dynamic window is symmetrical.
>>> But I wonder what would happen if I set unsymmetrical window.
>>> So I checked the HGen(in HTS-2.2) and HTS_model(in hts_engine_API-1.06),
>>> found similar codes below;
>>> +     /* set pointer */
>>> +     length = fsize / 2;
>>> +     win->coefficient[i] += length;
>>> +     win->l_width[i] = -length;
>>> +     win->r_width[i] = length;
>>> +     if (fsize % 2 == 0)
>>> +         win->r_width[i]--;
>>>
>>> I suppose it means I can set unsymmetrical window like
>>> +   4   1.0   1.0   [-2.0]   1.0
>>> with  '-2.0' be the coeff. for current frame, right?
>>> But what if I set
>>> +   5   1.0   1.0   [-2.0]   1.0   0.0
>>> as unsymmetrical window in a symmetrical form? Is it the same?
>>> Please drop in any opinion.
>>> Thank you.
>>>
>>> Best,
>>> --
>>> Xingyu Na (那兴宇)
>>> http://www.idiap.ch/~xna/
>>> Beijing Institute of Technology [naxy(at)bit.edu.cn]
>>> Idiap Research Institute [xingyu.na(at)idiap.ch]
>>>
>>
>>
>>
>>--
>>Heiga ZEN (in Japanese)
>>Byung Ha CHUN (in Korean)
>><heigazen@xxxxxxxxxx>
>>



-- 
Heiga ZEN (in Japanese)
Byung Ha CHUN (in Korean)
<heigazen@xxxxxxxxxx>