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Topic: MP3/AAC/Vorbis/Opus vs lossless ABX test (one song) (Read 3923 times) previous topic - next topic
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MP3/AAC/Vorbis/Opus vs lossless ABX test (one song)

Encoders used: LAME 3.99.5, QAAC 2.59, oggenc v2.87, opusenc 2016-05-22
Headphones: One EHP-303E in-ear headphones (costed 1500BsF/$1.5)
Equalizer: Equalizer APO (software), screenshot (imgur)
Song: USAO - Dynamite

MP3 V2 (~192kbps) vs FLAC
Spoiler (click to show/hide)
Note: Start time is 1:07.5, the sound effect on the right channel around 1:08.5 is a bit muffled on the MP3. It sounds a bit more "centered" on the MP3. I only listened to the "X" sample.

AAC VBR Q82 (~160kbps) vs FLAC
Spoiler (click to show/hide)
Note: Start time is 1:05.0, there's a sound effect around 1:06.2 that has a slightly lower volume in the AAC file.

Vorbis Q5 (~160kbps) vs FLAC
Spoiler (click to show/hide)
Note: Start time is 1:05.0, sounds a bit different.

Opus 144kbps VBR vs FLAC
Spoiler (click to show/hide)
Note: Start time is 1:05.0, sounds a bit different. The difference is more noticeable if I start on X then click on A. I can't pass an ABX test between Opus 144kbps and Vorbis Q5 for some reason.

MP3 V1 (~224kbps) vs FLAC: failed
AAC Q91 (~192kbps) vs FLAC: failed
Vorbis Q6 (~192kbps) vs FLAC: failed
Opus 160kbps VBR vs FLAC: failed

1:00 in the full song is 0:00 in the attached file.

Re: MP3/AAC/Vorbis/Opus vs lossless ABX test (one song)

Reply #1
That's some very significant EQ, was it done to specifically target problem frequencies, or are those the general settings you use for listening?

Re: MP3/AAC/Vorbis/Opus vs lossless ABX test (one song)

Reply #2
That's some very significant EQ, was it done to specifically target problem frequencies, or are those the general settings you use for listening?
Those are the settings that I use for listening. Without the EQ, I can notice the difference between AAC Q64 (~128kbps) and FLAC but not Opus 96kbps and FLAC.

Re: MP3/AAC/Vorbis/Opus vs lossless ABX test (one song)

Reply #3
Very interesting :-)

Did you try LAME -V0 as well, just for curiosity?

Re: MP3/AAC/Vorbis/Opus vs lossless ABX test (one song)

Reply #4
Very interesting :-)

Did you try LAME -V0 as well, just for curiosity?

Yes. My final pval value was over 30%, same with the other formats that I marked as "failed"

Re: MP3/AAC/Vorbis/Opus vs lossless ABX test (one song)

Reply #5
Ah OK, I didn't get that initially :-)

Re: MP3/AAC/Vorbis/Opus vs lossless ABX test (one song)

Reply #6
Today I managed to ABX a 128 kbps vrb qaac, and I was going to post my results, but another venezuelan have already done it. jajaja ¿De qué ciudad eres? outstanding results, I actually tried to replicate your results twice, both ended up being 7/10. :( The track you provided is a lot harder for me.

If you're interested, I can link you the track which I'm able to ABX, to see if you can ABX it at even higher bitrates since I can't replicate your results.

 
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