Real vs Apple AAC samples
Reply #1 – 2004-08-01 18:11:52
• blackwater sample foo_abx v1.2 report foobar2000 v0.8.3 2004/08/01 18:59:01 File A: file://C:\temp\Pomme vs Réel\Blackwater_Apple.m4a File B: file://C:\temp\Pomme vs Réel\Blackwater_Real.m4a 18:59:05 : Test started. 19:00:06 : 01/01 50.0% 19:00:15 : 02/02 25.0% 19:00:24 : 03/03 12.5% 19:00:31 : 04/04 6.3% 19:00:41 : 05/05 3.1% 19:00:51 : 06/06 1.6% 19:00:59 : 07/07 0.8% 19:01:10 : 08/08 0.4% 19:01:20 : 09/09 0.2% 19:01:28 : 10/10 0.1% 19:01:35 : 11/11 0.0% 19:01:43 : 12/12 0.0% 19:01:56 : 13/13 0.0% 19:02:01 : 14/14 0.0% 19:02:10 : 15/15 0.0% 19:02:14 : 16/16 0.0% 19:02:15 : Test finished. ---------- Total: 16/16 (0.0%) The lowpass betrayed Apple encoding (audible on cymbals, more pleasant and sharp with Real encoder). The first part of the sample was OK for me with both encoders. Therefore, both encoding are good in my opinion (and my listening system, based on AC'97 and poor line-out). • waiting sample foo_abx v1.2 report foobar2000 v0.8.3 2004/08/01 19:02:34 File A: file://C:\temp\Pomme vs Réel\Waiting_Apple.m4a File B: file://C:\temp\Pomme vs Réel\Waiting_Real.m4a 19:02:38 : Test started. 19:02:52 : 01/01 50.0% 19:02:56 : 02/02 25.0% 19:03:00 : 03/03 12.5% 19:03:05 : 04/04 6.3% 19:03:10 : 05/05 3.1% 19:03:19 : 06/06 1.6% 19:03:28 : 07/07 0.8% 19:03:43 : 08/08 0.4% 19:03:48 : 09/09 0.2% 19:03:56 : 10/10 0.1% 19:04:04 : 11/11 0.0% 19:04:08 : 12/12 0.0% 19:04:16 : 13/13 0.0% 19:04:23 : 14/14 0.0% 19:04:30 : 15/15 0.0% 19:04:35 : 16/16 0.0% 19:04:36 : Test finished. ---------- Total: 16/16 (0.0%) Here, the quality difference is really consequent. Apple AAC@128 is seriously distorted, whereas Real AAC@192 is really less annoying.
Wavpack Hybrid: one encoder, one encoding for all scenarios WavPack -c4.5hx6 (44100Hz & 48000Hz) ≈ 390 kbps + correction file WavPack -c4hx6 (96000Hz) ≈ 768 kbps + correction file WavPack -h (SACD & DSD) ≈ 2400 kbps at 2.8224 MHz