Hi all,
I'd like to have a compression software, FLAC would be ok, in
something like .dll to call it from within my VB software. Any hint for
finding something like that ?
Gianni
At 03.12 29/08/2003 +0000, you wrote:
>Glad that it tested out ok.
>Let us all know if you find any other compression programs that have
>free .flt files for Cooledit. That was the biggest advantage for me
>of just being able to treat them like just another file within my
>choosen sound editor.
>
>Rich Peet
>
>--- In Saint Exupery
><> wrote:
> > At 02:20 28/08/2003 +0000, you wrote:
> > >I guess it was rude not to post a file to play with and test drive.
> > >
> > >http://home.comcast.net/~richpeet/0148.fla
> > Great sound record !
> >
> > I did some tests with the flac codec but also with the ogg vorbis
>just to
> > have a better idea about the pro and the con of such compressors. I
>have
> > used 2 long sound records respectively of 372Mb and 178 Mb for this
>purpose
> > and, well, =85. I was agreeably surprised !!!
> >
> > The flac codec is quite efficient and fast enough as the
>compression level
> > is not pushed over 5 . It is really a lossless format. I checked
>it by
> > converting an original .wav file in a .flac file and by converting
>the
> > .flac file back to a .wav file. The two .wav files are identical.
>I'm
> > convinced now I will use it to store my original files !
> >
> > It is more difficult to have a judgement about the quality of the
>ogg
> > vorbis codec as I don't have good conditions to listen the
>compressed
> > files (bloody computer fans !!!). The next step will be to make a
> > furniture to isolate this noise and vibration generator called PC=85
> >
> >
> > The first sound record is a seabirds colony without seabirds (they
>were
> > coming) ! The second one is the same seabirds colony few hours
>after :
> > really noisy (some samples available on
> > http://homepages.paradise.net.nz/waughfil/index.htm).
> >
> >
> >
> > File 1 (quite seabirds colony, stereo, 48 kHz, 16bit, 33m03)
> > Raw file .wav PCM: 372 MB
> >
> > Lossless compression
> > Flac, compression level =3D5 : 122.3 MB (
> > 1m) ratio =3D 3.0
> > Flac, compression level=3D8(max) : 121.8 MB (4m20)
>ratio =3D 3.0
> >
> > Lossy compression but really good quality
> > Ogg Vorbis, quality=3D10 (max) : 105.4 MB
> > (3m50) ratio =3D 3.5
> > Ogg Vorbis, quality=3D6 ("audiophile" qlty) : 41.4 MB
> > (3m40) ratio =3D 8.9
> >
> > Lossy compression, "medium" quality
> > MP3 128kbps FraunHofferIIs : 31.0 MB
> > (1m12) ratio =3D 12
> >
> >
> >
> > File 2 (noisy seabirds colony, stereo, 48 kHz, 16bit 15m48)
> > Raw file .wav PCM: 178 MB
> >
> > Lossless compression
> > Flac, compression level =3D5 : 83 MB (
> > 40s) ratio =3D 2.1
> > Flac, compression level=3D8(max) : 82.8 MB (2m)
>ratio =3D 2.1
> >
> > Lossy compression but really good quality
> > Ogg Vorbis, quality=3D10 (max) : 51.2MB
> > (1m50) ratio=3D3.5
> > Ogg Vorbis, quality=3D6 ("audiophile" qlty) : 20.1 MB
> > (2m) ratio=3D8.8
> >
> > Lossy compression, "medium" quality
> > MP3 128kbps FraunHofferIIs : 14.8 MB
> > (30s) ratio=3D12
> >
> > (test performed with an AMD 1.8 GHz - 512MB)
>
>
>
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