Sound files and pvf

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>Well, that's all there is :-(
[ ... ]

Understood, perhaps I can fix that :)

>If I remember correctly what you're talking about, that's just the
>way it is.  Voice code in modems is optimized for telephone lines and
>*low data throughput*.  So 9600 samples/sec. is a fairly reasonable
>value (ELSA uses 7200, for example, which also sounds pretty well) - the
>quality you can achieve with 9600 samples/sec. is good enough for a
>telephone line.
>
>You might want to use ADPCM-4 for best results (pvftormd ZyXEL 4 ...).
[ ... ]

I recall, back in the days where I had a 3b1, that 8000 samples was very good,
but that was in ulaw format.   So, it must be a problem with the software I'm
using
(CoolEditPro and sox).  Though I did try recording a song from CD->WAV into
8000
samples, and it sounded just horrible.  I'm presuming I'm doing something
wrong.

I'm not a sound engineer :)

So, the original files I have are in *.WAV or *.RAW format, and at very high
resolution
(44100).   So, the path to to an *.rmd file format is:

        wavtopvf | pvftormd ZyXEL 4

I've got to find out a better way to downsample, or to record a better file at
8000-9600
samples.

Have you any recommendation of sound manipulation software?

Years ago, when I had my 3b1, the voice card (even then) made an excellent
answering machine, so I'm really looking forward to getting this stuff working
:)


Thanks,

Forrest