rjamorim started a new public listening test to compare the different .aac encoder (@128kbps) out there:
The encoders and parameters used are:
Psytel AACenc 2.15 -br 128
Ahead/Nero 5.5.10.35 128kbps CBR, high quality
Sorenson Squeeze 3.5 (FhG Pro) 128kbps
Apple QuickTime 6.3 (Dolby) 128kbps high quality
FAAC 1.17b -a 64 (64kbps/channel)you can find the web site with specific information about the test and how you can participate here!
happy listening!
Test closed!
Thanks for everybody that participated.
For those interested, here is the amount of participants:
Sample01: 18
Sample02: 13
Sample03: 13
Sample04: 15
Sample05: 15
Sample06: 14
Sample07: 13
Sample08: 11
Sample09: 14
Sample10: 12
Sample11: 12
Sample12: 14
Results will be made available ASAP at
test/
Obs: Thanks for announcing the test here, Bond.
I'd like to announce that my first listening test successfuly ended.
The results page is available here:
t...t/results.html
So far, you only get results for each sample, and overall results.
Tomorrow, I'll add fancy things like user comments, bitrates, etc.
For those really hurried, here is the overall plot:Once again, thanks to everyone that participated. Hopefully, there'll be more in a month.
Kind regards;
Roberto Amorim.
Shame I missed the test.
I used to play around with the Liquid Audio (AAC) player/encoder but it was too slow to use and the free player only offered low bit 'protected' encodes!
But like you say the QuickTime AAC player/encoder does a darn good job.
Originally posted by SeeMoreDigital
Shame I missed the test.
Well, in one month I plan to start another test, the winner (QuickTime) versus Vorbis, Musepack, Lame and WMA.
You are invited to participate when it starts.
But like you say the QuickTime AAC player/encoder does a darn good job.
Yeah, I was pretty amazed myself with it's quality. It ALWAYS win, either alone or tied.
Regards;
Roberto.
Originally posted by rjamorim
in one month I plan to start another test, the winner (QuickTime) versus Vorbis, Musepack, Lame and WMA.
great idea!
i was pretty much surprised that nero was second worst...
but quot;Apple knows what's good ™quot; Thanks for announcing the test here, Bond.
no problem! next time i will have to push this issue much more to get more people from to participate the test
Hi rjamorim
Well I have to admit a fondness for Mp3pro @ 96kbps.
I just wish it could be incorporated into a few more media players other than MusicMatch and WinAmp!
Better still, DivX and Xvid with Mp3pro. You know it makes sense!
As for Lame I used to use it all the time with my DivX encodes but I now have Radium (v1.263) installed.
It's upsetting that WMA sounds good at 96kbps. but so does atrac3 And as for Vorbis and Musepack I've never used them. So maybe I'm missing something!
There's just too much choice!
Originally posted by SeeMoreDigital
Well I have to admit a fondness for Mp3pro @ 96kbps.
I just wish it could be incorporated into a few more media players other than MusicMatch and WinAmp!
Better still, DivX and Xvid with Mp3pro. You know it makes sense!
Hrm.. and why not AAC+ instead of MP3pro?
AAC+ is the same thing as MP3pro. Base stream + SBR stream.
With the obvious difference that the AAC stream is much more efficiant than the MP3 one.
It's been mentioned that Ahead will release an AAC+ implementation later this month/early next month.
It's upsetting that WMA sounds good at 96kbps. but so does atrac3 And as for Vorbis and Musepack I've never used them. So maybe I'm missing something!
Vorbis is good, but MP3pro is probably better. I believe Musepack won't perform very well at that bitrate.
There's just too much choice!
That's where the listening tests step in.
Regards;
Roberto.
Would be nice to see some multichannel AAC results.
Regarding multichannel encoding, I found an aac encoder that will output 5.1 aac and not only that it is the dolby professional codec not the same one that comes with Quicktime, check it out here [ucl]index_new.asp?emersys/ little bit out of my price range though unfortunately. So, I think that is 3 multichannel aac encoders now that I know of Nero, FAAC and this one that ships with Maven3D.
Originally posted by bobsc
Would be nice to see some multichannel AAC results.
Wouldn't make much difference, really.
I think the only factor that influences quality differently from stereo is how an encoder deals with channel redundancies. All other algorithms are the same.
Originally posted by rjamorim
Wouldn't make much difference, really.
I think the only factor that influences quality differently from stereo is how an encoder deals with channel redundancies. All other algorithms are the same.
Yes, but for a typical 5.1 movie soundtrack this is where the big difference could be, as many channels on the 5,1 soundtrack hold redundant, uncomplex or equal sound information, just think of the .1 subwoofer channel, with only low frequency information ....
Originally posted by ChristianHJW
Yes, but for a typical 5.1 movie soundtrack this is where the big difference could be, as many channels on the 5,1 soundtrack hold redundant, uncomplex or equal sound information, just think of the .1 subwoofer channel, with only low frequency information ....
Right. But you don't need a listening test for that, really, it's easier to just check which encoder deals with redundancies better.
That said, I would love to perform a multichannel listening test, comparing AAC, Vorbis, AC3, WMAv9 and MPC SV8 (if it's ever released).
Biggest problem of conducing it would be the difficulty of finding uncompressed sources of multichannel audio. Using AC3 and DTS as sources wouldn't do, really.
Regards;
Roberto.
Hi rjamorim
It probably wouldn't be such a bad idea to use a DTS file as a source, that is, if you're unable to get hold of some uncompressed source files.
I do have a very short (9056KB) 8Ch .wav file. Which came together with the 8Ch .wma version (388KB). I found them on M$ Media 'Test Site'!
I have had some success converting 6Ch .ac3 streams (from movies) to 'basic' 6Ch .wma streams. And there's no denying that big 'MB' savings can be made.
I think it would be a great idea to compare multi channel versions of AAC, Vorbis, WM9 and MPC SV8, RealMedia etc. |
Post at 2011-4-15 17:25
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