[hts-users:04292] Re: Vocoding natural speech

[Rasmus Dall <R.Dall@xxxxxxxxxxxx>]

Hi Erica,

I find that the easiest way is to use SPTK's wav2raw method  
(http://sp-tk.sourceforge.net/).

This has worked successfully for me.

The command I use is:

SPTKDIR/bin/wav2raw -N -L -d OUTDIR INFILE

You may wish to change some of the options yourself to fit your data  
though (e.g. if it is not stereo data).

- Rasmus

Quoting Erica Cooper <ecooper@xxxxxxxxxxxxxxx> on Mon, 13 Jul 2015  
10:58:52 -0400:

> Hi,
>
> We are trying to vocode natural speech to use as a comparison in a
> naturalness test.  I have been following parts of the HTS demo scripts to
> do this.  In particular, first converting .wav to .raw, then doing 'make
> lf0' and 'make mgc', and finally using the 'gen_wave' function in
> Training.pl.
>
> The problem is, I get a lot of the error "x2x : warning: input data is over
> the range of type 'short'!"  And then the output audio has a lot of loud
> squeaks and pops.  I've isolated the problem to the .wav to .raw conversion
> - when I do the vocoding starting with the .raw files that came with the
> SLT demo, instead of converting them from .wav myself, it comes out
> sounding fine.
>
> I've tried two methods to convert .wav to .raw: first, this one that was in
> the README in the demo:
>
> ch_wave -c 0 -F 32000 -otype raw in.wav | x2x +sf | interpolate -p 2 -d |
> ds -s 43 | x2x +fs > out.raw
>
> and this one, that I found in an earlier thread on this mailing list:
>
> for wav ./wav/*.wav
> do
>   raw=./raw/`basename $wav .wav`.raw
>   sox -c 1 -s -w -t wav -r 16000 $wav -c 1 -s -w -t wav -r 48000 $raw
> done
>
> and for both of these, the audio comes out sounding bad.
>
> So, does anyone know what might be causing this, or how the .raw files in
> the SLT demo were generated from .wav, or know of any other way to vocode
> natural speech in a .wav file?
>
> Thanks very much,
> Erica



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