Is 320 CBR the best MP3 sound quality?
Reply #20 – 2010-02-13 15:28:40
I do have track that does sound worse with 320kbps then V0.320kbps vs FLAC foo_abx 1.3.4 report foobar2000 v1.0 2010/02/13 14:55:54 File A: J:\Music\Lossless\Kraftwerk - The Man Machine\03. Metropolis.flac File B: C:\Temp\Metropolis 320 CBR.mp3 14:55:54 : Test started. 14:56:26 : 01/01 50.0% 14:56:30 : 02/02 25.0% 14:56:34 : 03/03 12.5% 14:56:38 : 04/04 6.3% 14:56:42 : 05/05 3.1% 14:56:46 : 06/06 1.6% 14:56:49 : 07/07 0.8% 14:56:53 : 08/08 0.4% 14:56:57 : 09/09 0.2% 14:57:02 : 10/10 0.1% 14:57:07 : 11/11 0.0% 14:57:12 : 12/12 0.0% 14:57:17 : 13/13 0.0% 14:57:21 : 14/14 0.0% 14:57:25 : 15/15 0.0% 14:57:26 : Test finished. ---------- Total: 15/15 (0.0%) Pre-echo throughout the start, but it's not annoying. Sadly at 0:09 there is a very obivous and annoying precho artifact.320kbps vs V0 foo_abx 1.3.4 report foobar2000 v1.0 2010/02/13 15:00:10 File A: C:\Temp\Metropolis 320 CBR.mp3 File B: C:\Temp\Metropolis V0.mp3 15:00:10 : Test started. 15:00:39 : 01/01 50.0% 15:00:42 : 02/02 25.0% 15:00:48 : 03/03 12.5% 15:00:52 : 04/04 6.3% 15:00:55 : 05/05 3.1% 15:01:02 : 06/06 1.6% 15:01:07 : 07/07 0.8% 15:01:10 : 08/08 0.4% 15:01:14 : 09/09 0.2% 15:01:19 : 10/10 0.1% 15:01:24 : 11/11 0.0% 15:01:30 : 12/12 0.0% 15:01:34 : 13/13 0.0% 15:01:38 : 14/14 0.0% 15:01:42 : 15/15 0.0% 15:01:45 : 16/16 0.0% 15:01:46 : Test finished. ---------- Total: 16/16 (0.0%) At the start V0 does produce slightly rougher precho, but at 0:09 the 320kbps file stands out greatly. While the 0:09 mark on the V0 file lacks the annoying artifact.I'm using LAME 3.97 at the moment for CBR, is it worth going to 3.98? If you are already using 320kbps CBR on LAME 3.97 with no compat issues i would stick with it. Since LAME 3.98 has some regression issues with problem tracks , due to it using a smaller frame size to make it 100% ISO compliant.