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My personal audio test

I was searching for a bitrate that will be transparent for me at lower bitrate. I always encode my song to AAC at 256 kbps without doing any real abx test. So when I was searching for the lowest bitrate that can be transparent many people say that ~128 kbps AAC should be transparent but it doesn't look that way to me. So I encode one of my fav song to 4 different codec with different bitrate(making them become similar in bitrate is such a pain so just leave it there) so I would like to share the result of the test with all of you.

Apple AAC @ 203 kbps (5.87mb)

foo_abx 2.0.1 report
foobar2000 v1.3.9
2015-11-20 22:20:27

File A: 01. yuiko — Awake.flac
SHA1: 35140ac2c8edc74a8681be43878c30abf6d700ec
File B: 01 - Awake.m4a
SHA1: b35eb40e53325ec2a7b591ea13401300066a01ba

Used DSPs:
Equalizer

Output:
DS : Primary Sound Driver
Crossfading: NO

22:20:27 : Test started.
22:21:23 : 00/01
22:22:06 : 01/02
22:22:25 : 02/03
22:23:05 : 02/04
22:23:43 : 03/05
22:24:19 : 04/06
22:24:58 : 05/07
22:25:41 : 06/08
22:26:31 : 07/09
22:27:09 : 07/10
22:27:48 : 08/11
22:28:32 : 09/12
22:29:10 : 10/13
22:29:46 : 11/14
22:30:22 : 12/15
22:30:57 : 13/16
22:31:34 : 13/17
22:32:12 : 13/18
22:32:55 : 14/19
22:33:33 : 15/20
22:33:33 : Test finished.

----------
Total: 15/20
Probability that you were guessing: 2.1%

-- signature --
8d1293e851f8fcc931fd11d68f2cb6ac0b073c5c

Lame MP3 @ 173 kbps (5.05mb)

foo_abx 2.0.1 report
foobar2000 v1.3.9
2015-11-20 22:09:45

File A: 01. yuiko — Awake.flac
SHA1: 35140ac2c8edc74a8681be43878c30abf6d700ec
File B: 01 - Awake.mp3
SHA1: 0e0483a93554d9018e864872a6c2c080446ddf40

Output:
DS : Primary Sound Driver
Crossfading: NO

22:09:45 : Test started.
22:10:23 : 01/01
22:10:45 : 02/02
22:11:19 : 03/03
22:11:35 : 04/04
22:12:10 : 04/05
22:12:45 : 05/06
22:13:34 : 06/07
22:13:50 : 07/08
22:14:10 : 07/09
22:14:27 : 08/10
22:14:43 : 09/11
22:15:02 : 10/12
22:15:19 : 11/13
22:15:35 : 12/14
22:15:55 : 13/15
22:16:30 : 14/16
22:17:11 : 14/17
22:17:24 : 15/18
22:17:42 : 16/19
22:17:58 : 17/20
22:17:58 : Test finished.

----------
Total: 17/20
Probability that you were guessing: 0.1%

-- signature --
93adc8bce5409e8b91283472848c75db163f787a

Musepack @ 193 kbps (5.16mb)

foo_abx 2.0.1 report
foobar2000 v1.3.9
2015-11-20 22:35:04

File A: 01. yuiko — Awake.flac
SHA1: 35140ac2c8edc74a8681be43878c30abf6d700ec
File B: 01 - Awake.mpc
SHA1: d5969922590d303bb4f3d159a6aba99066025eec

Used DSPs:
Equalizer

Output:
DS : Primary Sound Driver
Crossfading: NO

22:35:04 : Test started.
22:35:56 : 01/01
22:36:38 : 01/02
22:37:13 : 02/03
22:37:52 : 03/04
22:38:29 : 04/05
22:39:07 : 05/06
22:39:42 : 06/07
22:40:17 : 07/08
22:41:05 : 08/09
22:41:45 : 08/10
22:42:33 : 09/11
22:45:59 : 10/12
22:46:35 : 10/13
22:47:14 : 11/14
22:47:53 : 12/15
22:48:42 : 13/16
22:49:20 : 14/17
22:50:00 : 15/18
22:50:55 : 16/19
22:51:52 : 17/20
22:51:52 : Test finished.

----------
Total: 17/20
Probability that you were guessing: 0.1%

-- signature --
2024f1c01b068b97fa92da93c950c21946b23a0c

Opus @ 170 kbps (5.09mb)

foo_abx 2.0.1 report
foobar2000 v1.3.9
2015-11-20 17:03:54

File A: 01. yuiko — Awake.flac
SHA1: 35140ac2c8edc74a8681be43878c30abf6d700ec
File B: 01 - Awake.opus
SHA1: c404ed81492e61e070f1beb2afa8ee3eee5929ac

Used DSPs:
Equalizer, Resampler (dBpoweramp/SSRC)

Output:
DS : Primary Sound Driver
Crossfading: NO

17:03:54 : Test started.
17:04:48 : 01/01
17:05:25 : 02/02
17:06:10 : 03/03
17:06:46 : 04/04
17:07:25 : 05/05
17:08:19 : 06/06
17:08:59 : 07/07
17:09:35 : 08/08
17:10:10 : 08/09
17:10:46 : 09/10
17:11:23 : 10/11
17:12:01 : 11/12
17:12:35 : 12/13
17:13:13 : 13/14
17:13:29 : 14/15
17:14:05 : 15/16
17:14:40 : 16/17
17:15:18 : 17/18
17:15:33 : 18/19
17:16:10 : 19/20
17:16:10 : Test finished.

----------
Total: 19/20
Probability that you were guessing: 0.0%

-- signature --
88248f1d5a9f1c9888f8f45d84a5c60164ae43b7
I will think about tomorrow's problem tomorrow

My personal audio test

Reply #1
What would you describe is the problem with this track ?

I suggest to switch off all EQ ,DSP, resampling during the tests. Why are these on? Ive never seen this before.
wavpack 4.8 -b256hx6c

My personal audio test

Reply #2
What would you describe is the problem with this track ?

I suggest to switch off all EQ ,DSP, resampling during the tests. Why are these on? Ive never seen this before.

DSP is needed for Opus since it doesn't support 44.1 kHz. All of those EQ is on the FLAT preset. All of the frequency is on 0dB so I don't think there's a problem occur because of it

All of them isn't as loud as in lossless and the bass also isn't that powerful as in flac
I will think about tomorrow's problem tomorrow

My personal audio test

Reply #3
Ogg Vorbis @ 208 kbps (6.12 mb)

foo_abx 2.0.1 report
foobar2000 v1.3.9
2015-11-21 06:40:08

File A: 01. yuiko — Awake.flac
SHA1: 35140ac2c8edc74a8681be43878c30abf6d700ec
File B: 01 - Awake.ogg
SHA1: b1b01a4f2f35319507eb4258e1d7cbde396ec6c4

Output:
DS : Primary Sound Driver
Crossfading: NO

06:40:08 : Test started.
06:40:50 : 00/01
06:41:28 : 01/02
06:42:08 : 02/03
06:42:47 : 03/04
06:43:36 : 04/05
06:44:25 : 05/06
06:45:12 : 06/07
06:47:57 : 07/08
06:48:43 : 08/09
06:49:29 : 09/10
06:50:13 : 10/11
06:51:02 : 11/12
06:51:42 : 12/13
06:52:27 : 13/14
06:53:05 : 14/15
06:53:42 : 14/16
06:54:37 : 15/17
06:55:30 : 16/18
06:56:07 : 17/19
06:56:45 : 17/20
06:56:45 : Test finished.

----------
Total: 17/20
Probability that you were guessing: 0.1%

-- signature --
4781e5257ae094e80fced662a70ed14c1a6546a9
I will think about tomorrow's problem tomorrow

My personal audio test

Reply #4
Its look like I can't edit my earlier post. So here another result of my listening test. This is the easiest than other lossy codec I've tested.

Hybrid Wavpack @ 200 kbps.

foo_abx 2.0.1 report
foobar2000 v1.3.9
2015-11-21 08:27:18

File A: 01. yuiko — Awake.flac
SHA1: 35140ac2c8edc74a8681be43878c30abf6d700ec
File B: 01 - Awake.wv
SHA1: 65c6889fb509dd3de30569e9420801640dde7c3d

Output:
DS : Primary Sound Driver
Crossfading: NO

08:27:18 : Test started.
08:27:37 : 01/01
08:27:45 : 02/02
08:27:48 : 03/03
08:27:52 : 04/04
08:27:57 : 05/05
08:28:01 : 06/06
08:28:05 : 07/07
08:28:09 : 08/08
08:28:15 : 09/09
08:28:19 : 10/10
08:28:22 : 11/11
08:28:26 : 12/12
08:28:29 : 13/13
08:28:33 : 14/14
08:28:38 : 15/15
08:28:42 : 16/16
08:28:45 : 17/17
08:28:50 : 18/18
08:28:53 : 19/19
08:28:56 : 20/20
08:28:56 : Test finished.

----------
Total: 20/20
Probability that you were guessing: 0.0%

-- signature --
f2f82140a58062eae972f42dc8652da7b02350dc
I will think about tomorrow's problem tomorrow

My personal audio test

Reply #5
Thanks.  Do you think wavpack has the same bass issue ? @ 200k theres almost always added noise so its easiest to abx. 300k may be around 180k vbr of the others. The only artifact is hiss/noise floor.
wavpack 4.8 -b256hx6c

My personal audio test

Reply #6
Thanks.  Do you think wavpack has the same bass issue ? @ 200k theres almost always added noise so its easiest to abx. 300k may be around 180k vbr of the others. The only artifact is hiss/noise floor.

I don't measure Wavpack based on Bass. I measure it based on the main guitar sound. Wavpack guitar sound artifact is too audible that I can hear it right away.

That artifact is gone in 320 kbps but it file size is similar to other lossy codec with the same bitrate
I will think about tomorrow's problem tomorrow

 
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