HydrogenAudio

Hydrogenaudio Forum => Listening Tests => Topic started by: Sham 69 on 2021-10-10 19:58:11

Title: Vorbis 96 kbps = MP3 192 kbps? Check It Out!
Post by: Sham 69 on 2021-10-10 19:58:11
foo_abx 2.0.6d report
foobar2000 v1.6.7
2021-10-10 13:46:48

File A: WAV.wav
SHA1: 33b28cc6d1b4b60e8684ee7350f845d195e195c6
File B: MP3 192.mp3
SHA1: 0614a6c33739c4fec6e93925644ad076d432e930

Output:
Default : Primary Sound Driver
Crossfading: NO

13:46:48 : Test started.
13:48:48 : 01/01
13:49:53 : 02/02
13:51:39 : 02/03
13:52:00 : 03/04
13:52:35 : 04/05
13:53:43 : 05/06
13:56:33 : 06/07
13:57:41 : 06/08
13:57:41 : Test finished.

 ----------
Total: 6/8
p-value: 0.1445 (14.45%)

 -- signature --
33d0e7983cabd4d76ee0816756583f9681dd6a5d


foo_abx 2.0.6d report
foobar2000 v1.6.7
2021-10-10 14:26:50

File A: WAV.wav
SHA1: 33b28cc6d1b4b60e8684ee7350f845d195e195c6
File B: OGG 96.ogg
SHA1: 0ca5f20e78dbf7cda11beee6cc2a4aa0f09a9f5e

Output:
Default : Primary Sound Driver
Crossfading: NO

14:26:50 : Test started.
14:28:52 : 01/01
14:30:36 : 01/02
14:31:49 : 02/03
14:33:44 : 03/04
14:34:03 : 04/05
14:34:36 : 04/06
14:35:15 : 05/07
14:35:51 : 06/08
14:35:51 : Test finished.

 ----------
Total: 6/8
p-value: 0.1445 (14.45%)

 -- signature --
e3a503add7ac494659bf38b09d4fe01a18a1a48e

And then I did the test again to make sure.

foo_abx 2.0.6d report
foobar2000 v1.6.7
2021-10-10 14:37:52

File A: WAV.wav
SHA1: 33b28cc6d1b4b60e8684ee7350f845d195e195c6
File B: OGG 96.ogg
SHA1: 0ca5f20e78dbf7cda11beee6cc2a4aa0f09a9f5e

Output:
Default : Primary Sound Driver
Crossfading: NO

14:37:52 : Test started.
14:38:42 : 01/01
14:39:45 : 02/02
14:40:14 : 03/03
14:40:59 : 03/04
14:42:27 : 04/05
14:42:43 : 05/06
14:42:55 : 06/07
14:43:38 : 06/08
14:43:38 : Test finished.

 ----------
Total: 6/8
p-value: 0.1445 (14.45%)

 -- signature --
2be6fd29178b0a0c5727bc8fb88bc958f6c3cbe8


I actually wanted to test OPUS, but realized I encoded into the wrong format after I was done with the second test, so I just rolled with it. Because OPUS is better than Vorbis, that would probably mean that a 96 kbps file would be equal to a 224 kbps MP3 or so. I'll note that these tests were hard, so even a 96 kbps MP3 would sound the same as a lossless file under normal listening circumstances. I did the tests with regular ear buds in a quiet room.
Title: Re: Vorbis 96 kbps = MP3 192 kbps? Check It Out!
Post by: Markuza97 on 2021-10-10 20:44:16
Hello Sham 69.

Can you please provide us with the files you were using during the test?
Title: Re: Vorbis 96 kbps = MP3 192 kbps? Check It Out!
Post by: Sham 69 on 2021-10-10 20:50:33
Here -
Title: Re: Vorbis 96 kbps = MP3 192 kbps? Check It Out!
Post by: Porcus on 2021-10-10 21:01:15
It is a stretch to say that 6/8 and 6/8 means they are equally good. If you decided up-front to test each eight listens, it is fair to say that they aren't both transparent to you - but for example, that is not the same as to say that they are both intransparent to you.