FhG AACDemo 2.2 test samples |
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FhG AACDemo 2.2 test samples |
 Mar 22 2002, 08:56
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#1
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 Group: Developer Posts: 2797 Joined: 22-September 01 Member No.: 6  |
QUOTE Originally posted by rjamorim
Hmm, if that is so, maybe I can help just a bit. Here's Fade to Black Mettalica sample from Lame test sample page (http://lame.sourceforge.net/download/samples/ftb_samp.wav)
99%+ of the people here never heard a stream encoded with AACdemo 2.2 - only Ivan and Menno, I guess)  Regards; Roberto. encoded with FhG AACDemo 2.2: http://sivut.koti.soon.fi/julaak/ftb_samp-FGh_ref2.2.aac -------------------- Juha Laaksonheimo
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Mar 22 2002, 09:24
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#2
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Group: Developer Posts: 2797 Joined: 22-September 01 Member No.: 6 |
Ok, here are more AACDemo 2.2 test samples:
Applaud Blackbird Castanets Fatboy Ftb_samp hihat mstest http://sivut.koti.soon.fi/julaak/AACDemo2.2_test_samples.zip Originals are at Lame test sample page: http://lame.sourceforge.net/gpsycho/quality.html *Cough* The samples were found on the net, from a reliable source.. 
(FhG doesn't allow posting of results of demo codec encodings.) But these indeed are AACDemo 2.2 encoded. -------------------- Juha Laaksonheimo
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Mar 22 2002, 16:24
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#3
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 Rarewares admin Group: Members Posts: 7515 Joined: 30-September 01 From: Brazil Member No.: 81 |
Thanks, JohnV.
QUOTE Originally posted by JohnV
(FhG doesn't allow posting of results of demo codec encodings.) That's why I thought only people involved with AAC developing had had access to these samples. Regards; Roberto. -------------------- Get up-to-date binaries of Lame, AAC, Vorbis and much more at RareWares:
http://www.rarewares.org |
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Mar 23 2002, 23:37
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#4
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 MPC Developer Group: Developer Posts: 543 Joined: 15-December 01 From: Germany Member No.: 659 |
QUOTE Originally posted by JohnV
Ok, here are more AACDemo 2.2 test samples: Applaud Blackbird Castanets Fatboy Ftb_samp hihat mstest http://sivut.koti.soon.fi/julaak/AACDemo2.2_test_samples.zip Originals are at Lame test sample page: http://lame.sourceforge.net/gpsycho/quality.html But these indeed are AACDemo 2.2 encoded. Encoder has a serious bug. The right channel contains from time to time strange low frequency artefacts which makes it very easy to distinguish between original and encoded file. For decoding I used faad2 + AKG-401. Can someone for example encode castagnets again with switched channels (right <-> left)? -------------------- -- Frank Klemm
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Mar 24 2002, 13:02
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#5
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Group: Developer Posts: 2797 Joined: 22-September 01 Member No.: 6 |
QUOTE Originally posted by Frank Klemm
Unfortunately I don't think this is possible. I don't know any person who has access to AACDemo 2.2 at the moment.
Can someone for example encode castagnets again with switched channels (right <-> left)? -------------------- Juha Laaksonheimo
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Mar 25 2002, 08:13
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#6
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Nero MPEG4 developer Group: Developer Posts: 1466 Joined: 22-September 01 Member No.: 8 |
Actually, AACDemo uses rather conservative cut-off filter that starts at 15 kHz and ends at 17 kHz.
Encoder is more or less state-of-the-art at 128 kbps. Fatboy is coded with small "bug" (this bug doesn't exist in Dolby AAC, but Dolby AAC encodes castanets with more distortion in low-freq domain) It would be interesting to see how other AAC/MP3/... encoders encode same samples at 128 kbps CBR. |
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Mar 25 2002, 08:24
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#7
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Nero MPEG4 developer Group: Developer Posts: 1466 Joined: 22-September 01 Member No.: 8 |
Ok, same set of samples encoded with PsyTEL AACEnc 2.15 - at 128 kbps.
I think it is a nice showcase showing how close the "independent" implementatioins have approached the state-of-the-art
http://www.psytel-research.co.yu/samples/psytel_test.zip Note that those AACDemo samples were encoded in MAIN profile, and PsyTEL samples are encoded in LC (Low Complexity) profile! |
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Lo-Fi Version | Time is now: 21st May 2013 - 22:26 |
