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Lossless vs 320kbps vs 256kbps, Moderation: no actual ABX results to see here.
agatha1
post Nov 17 2011, 12:22
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Hello everyone and thanks for making this forum what it is, I think the best audio forum in the world.

This is my first post here and I'm a little bit concerned about my ABX blind test results. I currently have over 6 TB of music, mostly FLAC and mp3 at 320kbps, but I also have some rips at 192 or below.

Now I want to standardize my whole collection and see if I can save a lot of Hard disk space or if I need to get better rips for part of my collection, etc. So, after some very interesting reading here, I decided to perform my own set of ABX blind tests, downloading foobar2000 and the ABX plugin.

Of course for some simple songs I can't tell any difference even between FLAC and 128 kbps, but I want a standard for my whole collection, including a lot of classical and progressive rock, so I need to find a bitrate that ensures me that I will ALWAYS have the best quality I can hear.

I tried the test first with Camarillo Brillo (by Frank Zappa), which I think it's a very good song for this test, because at the very beginning, after only 4 seconds, there is a kind of rattlesnake (sorry, I don't know the name of the instrument), which sounds definitely different at every bitrate. I encourage everybody to use this song for testing, as it makes it very quick.

Now, my results:
FLAC vs 256: I can always tell the difference, 10 out ot 10 times.
but here's the strange thing:
FLAC vs 320: Not clear
320 vs 256: Not clear.

¿Does this make any sense to you?
And if so, ¿Which is the bitrate I should stick to for my whole collection?

Thank you in advance for any help.

Regards from Spain,
Agatha.
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pdq
post Nov 17 2011, 16:51
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Yes, you should never disable highpass as quality could suffer.

Edit: I mean lowpass!

Edit2: You should also switch to a decent ripper.


This post has been edited by pdq: Nov 17 2011, 17:12
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Posts in this topic
- agatha1   Lossless vs 320kbps vs 256kbps   Nov 17 2011, 12:22
- - db1989   1. Moved to Listening Tests 2. Post test logs, ple...   Nov 17 2011, 12:29
|- - agatha1   Hi db1989, 1.- Thank you for moving my post to t...   Nov 17 2011, 12:53
- - Jillian   I think the answer is very clear, if you're ha...   Nov 17 2011, 14:57
- - shadowking   IMO stay around 224k and not more as there is extr...   Nov 17 2011, 14:58
- - mixminus1   @OP: What MP3 encoder, and what settings were used...   Nov 17 2011, 15:10
|- - agatha1   QUOTE (mixminus1 @ Nov 17 2011, 15:10) @O...   Nov 17 2011, 15:43
- - Northpack   You should compare 320kbps MP3 with variable bitra...   Nov 17 2011, 15:11
|- - db1989   QUOTE (Northpack @ Nov 17 2011, 14:11) Yo...   Nov 18 2011, 11:38
- - pdq   Yes, you should never disable highpass as quality ...   Nov 17 2011, 16:51
|- - agatha1   QUOTE (pdq @ Nov 17 2011, 16:51) Yes, you...   Nov 17 2011, 20:13
|- - kwanbis   QUOTE (agatha1 @ Nov 17 2011, 19:13) Can ...   Nov 17 2011, 22:10
|- - Soap   Let's fix the terminology here. I think it is...   Nov 17 2011, 22:28
- - pdq   Converting from one compressed format to another i...   Nov 17 2011, 20:30
- - astroidmist   Hard drive space is always getting cheaper (except...   Nov 18 2011, 00:34
- - agatha1   Thank you all for your answers. The thread is bec...   Nov 18 2011, 01:34
|- - kwanbis   If all lossless formats are what they claim, i.e.,...   Nov 18 2011, 04:00
- - pdq   All lossless formats are identical in quality. Whe...   Nov 18 2011, 04:07
- - Glenn Gundlach   I don't know what hard drives go for in Spain ...   Nov 18 2011, 05:35
- - agatha1   * For Glenn Guldlach and astroidmist: I agree wit...   Nov 18 2011, 11:40
|- - kwanbis   QUOTE (agatha1 @ Nov 18 2011, 10:40) Howe...   Nov 18 2011, 17:22
|- - greynol   QUOTE (agatha1 @ Nov 18 2011, 02:40) I...   Nov 18 2011, 19:02
|- - kotekzot   QUOTE (agatha1 @ Nov 18 2011, 14:40) I ag...   Dec 26 2011, 20:12
- - pdq   Indeed it is possible for a defect in hearing to m...   Nov 18 2011, 12:54
|- - Remedial Sound   QUOTE (pdq @ Nov 18 2011, 06:54) Indeed i...   Nov 18 2011, 17:50
- - db1989   And it would still be helpful to post the logs of ...   Nov 18 2011, 13:01
- - agatha1   Hello everyone again. I've been quite busy set...   Dec 1 2011, 06:09
- - halb27   Encoding with 256 kbps is so good that chance is c...   Dec 1 2011, 09:19


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