12 Oct
2003
12 Oct
'03
6:04 a.m.
So I got a bunch of samples lying around from my FruityLoops days, and I
want to make use of 'em. The catch is, they're not standard PCM encoded
WAV files. While they are waves, they use format '674f', and I can't
figure out exactly what it is. XMMS can play it, sox doesn't know what
to do with it, and I've grepped the crap out of libsndfile and
libaudiofile and haven't found reference to it. Anybody know anything
about this? I'm about to go through the XMMS sources, so my post here
might be premature, but any and all leads will be appreciated.
Peace,
=Pete
--
You can only run configure at the top level of the Ardour source tree.
You don't want to know why this is true. Don't try to work around it.
12 Oct
12 Oct
6:17 a.m.
oh man I'd just play the fruityloops files back and record 'em to a DAT or a
CD or ecasound or ardour or audacity or snd or whatever
----- Original Message -----
From: "Pete Bessman" <ninjadroid(a)ml1.net>
To: <linux-audio-user(a)music.columbia.edu>
Sent: Sunday, October 12, 2003 2:48 AM
Subject: [linux-audio-user] Funky wav file format 674f
So I got a bunch of samples lying around from my
FruityLoops days, and I
want to make use of 'em. The catch is, they're not standard PCM encoded
WAV files. While they are waves, they use format '674f', and I can't
figure out exactly what it is. XMMS can play it, sox doesn't know what
to do with it, and I've grepped the crap out of libsndfile and
libaudiofile and haven't found reference to it. Anybody know anything
about this? I'm about to go through the XMMS sources, so my post here
might be premature, but any and all leads will be appreciated.
Peace,
=Pete
--
You can only run configure at the top level of the Ardour source tree.
You don't want to know why this is true. Don't try to work around it.
6:45 a.m.
With the Snd sound file editor there is a small utility called sndinfo. Comes
very handy when you have sound files you don't know what they are. Just run
it on the file and it will tell you what it can about it.
/Robert
söndagen den 12 oktober 2003 09.48 skrev Pete Bessman:
So I got a bunch of samples lying around from my
FruityLoops days, and I
want to make use of 'em. The catch is, they're not standard PCM encoded
WAV files. While they are waves, they use format '674f', and I can't
figure out exactly what it is. XMMS can play it, sox doesn't know what
to do with it, and I've grepped the crap out of libsndfile and
libaudiofile and haven't found reference to it. Anybody know anything
about this? I'm about to go through the XMMS sources, so my post here
might be premature, but any and all leads will be appreciated.
Peace,
=Pete
--
You can only run configure at the top level of the Ardour source tree.
You don't want to know why this is true. Don't try to work around it.
7:16 p.m.
On Sun, 12 Oct 2003 02:48:20 -0500
"Pete Bessman" <ninjadroid(a)ml1.net> wrote:
So I got a bunch of samples lying around from my
FruityLoops days, and I
want to make use of 'em. The catch is, they're not standard PCM encoded
WAV files. While they are waves, they use format '674f', and I can't
figure out exactly what it is. XMMS can play it, sox doesn't know what
to do with it, and I've grepped the crap out of libsndfile and
libaudiofile and haven't found reference to it. Anybody know anything
about this? I'm about to go through the XMMS sources, so my post here
might be premature, but any and all leads will be appreciated.
I asked for a copy of this file in a private email to Peter. Turns out this
is VERY interesting. Here is the hexdump:
00000000: 52 49 46 46 8C 10 00 00 57 41 56 45 66 6D 74 20 RIFF.... WAVEfmt
00000010: 1A 00 00 00 4F 67 01 00 44 AC 00 00 F8 2A 00 00 ....Og.. D....*..
00000020: 01 00 10 00 08 00 01 02 02 20 31 12 01 20 66 61 ........ . 1.. fa
00000030: 63 74 04 00 00 00 1F 05 00 00 64 61 74 61 52 10 ct...... ..dataR.
00000040: 00 00 4F 67 67 53 00 02 00 00 00 00 00 00 00 00 ..OggS.. ........
00000050: 00 00 00 00 00 00 00 00 B7 8F 12 B0 01 1E 01 76 ........ .......v
00000060: 6F 72 62 69 73 00 00 00 00 01 44 AC 00 00 FF FF orbis... ..D.....
00000070: FF FF 0F FA 00 00 FF FF FF FF B8 01 4F 67 67 53 ........ ....OggS
00000080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 01 00 ........ ........
00000090: 00 00 7D 31 CB 1F 0F 46 FF FF FF FF FF FF FF FF ..}1...F ........
000000A0: FF FF FF FF FF DE 03 76 6F 72 62 69 73 20 00 00 .......v orbis ..
000000B0: 00 58 69 70 68 6F 70 68 6F 72 75 73 20 6C 69 62 .Xiphoph orus lib
000000C0: 56 6F 72 62 69 73 20 49 20 32 30 30 31 31 32 33 Vorbis I 2001123
000000D0: 31 01 00 00 00 12 00 00 00 45 4E 43 4F 44 45 52 1....... .ENCODER
000000E0: 3D 76 6F 72 62 69 73 2E 61 63 6D 01 05 76 6F 72 =vorbis. acm..vor
000000F0: 62 69 73 25 42 43 56 01 00 40 00 00 80 60 DA 11 bis%BCV. .@...`..
00000100: 05 36 C5 A4 94 52 9E 71 58 2A 29 3A E5 A4 94 52 .6...R.q X*):...R
00000110: B2 C3 22 3B 4D CA 27 A5 94 52 4A 29 A5 7C 52 CA ..";M.'. .RJ).|R.
00000120: 18 63 8C 31 82 D0 90 55 00 00 10 00 00 41 0C 65 .c.1...U .....A.e
00000130: 06 59 C9 1C 17 5F 83 46 0C 75 06 59 C9 1C 17 DF .Y..._.F .u.Y....
00000140: 7B 89 90 A2 4A 39 0C A1 05 21 84 F0 A5 02 9B 3A {...J9.. .!.....:
00000150: 10 2E 05 21 84 20 34 64 15 00 00 08 00 C0 20 84 ...!. 4d ...... .
00000160: 10 42 08 21 85 14 52 48 21 85 14 62 88 21 86 18 .B.!..RH !..b.!..
Do you see what I see?
If you wanted to play this, I would suggest stripping off the first 68 bytes.
You will then have a standard Ogg Vorbis file.
Erik
--
+-----------------------------------------------------------+
Erik de Castro Lopo nospam(a)mega-nerd.com (Yes it's valid)
+-----------------------------------------------------------+
"I once worked for a company where as part of the BS5750 "Quality"
process I attended a meeting where I was informed that it was Company
Policy not to use free software. When I asked him for his written
authorisation for me to remove X Windows from our Sun workstations,
he backtracked." -- Phil Hunt
7:31 p.m.
On Mon, 13 Oct 2003 06:59:54 +1000, "Erik de Castro Lopo"
<erikd-lad(a)mega-nerd.com> said:
Do you see what I see?
HEH! So I wonder what that WAV header is doing in the file?
Hmm, and what superior set of heuristics is XMMS using
to sox and my sundry hacks to determine the files identity?
I know that FruityLoops samples tend to have extra info in
them, like loop points, which ogg might not support? I'll
have to investigate this thoroughly. Thanks for the help,
Erik, I've never touched a HEX editor in my life, I suppose
it's time to change that policy.
Peace,
=Pete
--
You can only run configure at the top level of the Ardour source tree.
You don't want to know why this is true. Don't try to work around it.
10:27 p.m.
On Sun, 2003-10-12 at 17:15, Pete Bessman wrote:
On Mon, 13 Oct 2003 06:59:54 +1000, "Erik de
Castro Lopo"
<erikd-lad(a)mega-nerd.com> said:
Isn't one of the definitions of a WAV file is that it can merely wrap
another file format? And usually that format is RIFF, but not
necessarily?
Taybin
Do you see what I see?
HEH! So I wonder what that WAV header is doing in the file?
Hmm, and what superior set of heuristics is XMMS using
to sox and my sundry hacks to determine the files identity?
13 Oct
13 Oct
2:53 a.m.
On Sun, 12 Oct 2003 20:12:48 -0400, "Taybin Rutkin"
<taybin(a)earthlink.net> said:
Isn't one of the definitions of a WAV file is that
it can merely wrap
another file format? And usually that format is RIFF, but not
necessarily?
It's the other way around. RIFF is a wrapper for other file formats,
which usually ends up being WAV. WAV allows for different encoding
types, if that's what you mean, but the encoding-type-code 0x674F isn't
one of the universally recognized standards (0x0001 corresponds to the
ubiquitous PCM data encoding format). With this particular file, it
seems that they have a standard WAV header at the beginning of the
file, and where the PCM data normally is they have an ogg. 'Tis quite
funky, really.
Peace,
=Pete
--
"The direct use of physical force is so poor a solution to the problem of
limited resources that it is only employed commonly by small children and
great nations."
--David D. Friedman
6:57 a.m.
On Sun, 12 Oct 2003 20:12:48 -0400
Taybin Rutkin <taybin(a)earthlink.net> wrote:
On Sun, 2003-10-12 at 17:15, Pete Bessman wrote:
> On Mon, 13 Oct 2003 06:59:54 +1000, "Erik de Castro Lopo"
> <erikd-lad(a)mega-nerd.com> said:
> > Do you see what I see?
>
> HEH! So I wonder what that WAV header is doing in the file?
> Hmm, and what superior set of heuristics is XMMS using
> to sox and my sundry hacks to determine the files identity?
Actually, no. IMO determining the file type by the use of magic
numbers is preferable.
Isn't one of the definitions of a WAV file is that
it can merely wrap
another file format? And usually that format is RIFF, but not
necessarily?
Actually it is RIFF that wraps WAV.
However, take another look at that hexdump. The 'RIFF' chunk enclosed a
'WAVE' chunk and then the Ogg data is contained inside the 'data' chunk.
Personally I think that is dodgy; a typical hack on top of a bodge etc.
Erik
--
+-----------------------------------------------------------+
Erik de Castro Lopo nospam(a)mega-nerd.com (Yes it's valid)
+-----------------------------------------------------------+
"Reality is just a crutch for people that can't handle CyberSpace!!"
- Hank Duderstadt
7714
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linux-audio-user@lists.linuxaudio.org
7 comments
5 participants
participants (5)
-
Aaron Trumm -
Erik de Castro Lopo -
Pete Bessman -
Robert Jonsson -
Taybin Rutkin