[hts-users:03631] Duration mean rounding
Hi all,
I'm trying to understand the duration modeling in detail. When I look at
the .dur files created by HMGenS, I sometimes see some unexpected numbers:
t^P6-sil+x=x@ ... -1.state[2]: duration=5 (frame), mean=5.174239e+00
t^P6-sil+x=x@ ... -1.state[3]: duration=11 (frame), mean=1.025650e+01
t^P6-sil+x=x@ ... -1.state[4]: duration=22 (frame), mean=2.222014e+01
t^P6-sil+x=x@ ... -1.state[5]: duration=6 (frame), mean=6.575937e+00
t^P6-sil+x=x@ ... -1.state[6]: duration=2 (frame), mean=1.950120e+00
In general, the number of frames is the rounded mean. But sometimes,
like in the fourth row here, it seems to be floored rather than rounded.
Sometimes it also seems ceiled.
I am using HTS 2.2, and in HGen.c (lines 796 etc.) I see:
dur = (rFlags&RNDDUR) ? GaussDeviate(mean[i][k],sqrt(1.0/ivar[i][k])) /*
random duration sampling */
: mean[i][k]+rho/ivar[i][k];
genInfo->durations[i][j] = (int)(dur+diff+0.5);
I don't see where RNDDUR would be set, so I assume I am not randomly
sampling (not 100% sure though, where should I look?).
I am calling HMGenS with -r 1.0, so rho should be 0.0
So I would expect 7 frames and not 6 in the fourth row above.
Does anybody understand what's going on?
Thank you, Dietmar
--
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Dipl.-Ing. Dietmar Schabus | Researcher
phone +43 1 5052830-48 | fax -99 | schabus@xxxxxx |
http://userver.ftw.at/~schabus/
FTW Telecommunications Research Center Vienna
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