[hts-users:00763] Re: HGenS and WUW matrix

["Alexander Gutkin" <alexander.gutkin@xxxxxxxxx>]

I was just about to write to Toda-san and Junichi thanking for their
help as I finally realized that the WUW matrix has indeed a bandwith
of 4L+1 but is not band-symmetric. I implemented something along the
following lines (my WUM and WUW matrices are zero-index based and c is
an m-th row of C):

    for (t = 0; t < pst->T; t++) {
        B[t] = WUM[t];
        for (k = 0; k < pst->width; k++) {
            if (k == 0) {
                B[t] -= WUW[t][0] * c[t];
            } else {
                if (t + k < pst->T) {
                    B[t] -= WUW[t][k] * c[t + k];
                }
                if (t - k >= 0) {
                    B[t] -= WUW[t - k][k] * c[t - k];
                }
            }
        }
    }

    I would like to thank you all for your help!

                                         Yours sincerely,
                                                                Alexander.

On 8/2/07, Heiga ZEN (Byung Ha CHUN) <zen@xxxxxxxxxxxxxxx> wrote:
> Hi,
>
> Alexander Gutkin wrote (2007/08/02 18:55):
>
> >     B = W^{T}U^{-1]M - W^{T}U^{-1}WC
> >
> >     //
> >     // for a given dimension d \in [1 ; D]
> >     //
> >     for (t = 1; t <= pst->T; t++) {
> >         B[t] = 0.0;
> >         for (k = 1; (k <= pst->width) && (t + k <= pst->T); k++) {
> >             B[t] += (pst->sm.WUW[t][k] * C[t + k][d]);
> >         }
> >         B[t] = pst->sm.WUM[t] - B[t];
> >     }
>
> Actually I finished implementing the speech parameter generation algorithm considering GV for the next HTS-2.1 release.
> In my implementation this part is as follows:
>
>    for (t=1; t<=pst->T; t++) {
>       B[t] = WUW[t][1]*c[t];
>       for (i=2; i<=pst->width; i++) {
>          if (t+i-1<=pst->T)
>             B[t] += WUW[t][i]*C[t+i-1][d];
>          if (t-i+1>0)
>             B[t] += WUW[t-i+1][i]*C[t-i+1][d];
>       }
>       B[t] = WUM[t]-B[t];
>    }
>
> The first release candidate of HTS-2.1 will be available in this autumn.
>
> Regards,
>
> Heiga ZEN (Byung Ha CHUN)
>
> --
> ------------------------------------------------
>  Heiga ZEN     (in Japanese pronunciation)
>  Byung Ha CHUN (in Korean pronunciation)
>
>  Department of Computer Science and Engineering
>  Nagoya Institute of Technology
>  Gokiso-cho, Showa-ku, Nagoya 466-8555 Japan
>
>  http://www.sp.nitech.ac.jp/~zen
> ------------------------------------------------
>
>