Hydrogenaudio Listening Tests
From time to time, HydrogenAudio members conducted listening tests, either public ones or private ones. These listening test should be valuable in gauging the performance of various digital audio techniques, e.g. compression, transcoding, etc., on a certain point in time.
It should be noted that these tests may become obsoleted by newer enhancements in the techniques. So please ensure that there's no newer tests before drawing conclusions.
This page contains links to Listening Tests carried out by various members of HydrogenAudio.
Contents
Format-specific Tests
AAC
| Date | Title | Performed by | Type | Codecs | Links |
|---|---|---|---|---|---|
| 2004-01-18 | 128-kbps Classic | Guruboolez | Private | iTunes 4.1.052, iTunes 4.7.042, Nero 2.5.9.7 Nero 2.9.998 CBR, Nero 2.9.998 VBR |
HA Thread |
| 2005-09-05 | 48- & 64-kbps HE-AAC Classic | Guruboolez | Private | CT aacPlus v.2 48- & 64-kbps Helix 11.0.0.1897, Nero 3.2.0.20 VBR |
HA Thread |
MP3
| Date | Title | Performed by | Type | Codecs | Links |
|---|---|---|---|---|---|
| 2004-01-18 | Dithering Test (1) | Guruboolez | Private | MP3 Decoders: MAD, LAME, Fraunhofer, foobar2000 |
HA Thread |
| 2004-11-15 | 130-kbps rjamorim | Guruboolez | Private | LAME 3.90.3 ABR, 3.96.1 ABR, 3.96.1 VBR | HA Thread |
| 2005-01-11 | 128-kbps ff123 | Guruboolez | Private | LAME 3.90.3, 3.96.1, 3.97a5 | HA Thread |
| 2005-10-17 | -V5 Classical | Guruboolez | Private | LAME 3.98: -V5, with --vbr-new, add --athaa-sensitivity 1 |
HA Thread |
Notes: (1) Performed under extreme listening conditions not reproducible on daily listening.
MPC
| Date | Title | Performed by | Type | Codecs | Links |
|---|---|---|---|---|---|
| 2005-06-18 | --standard Classical | Guruboolez | Private | 1.01j, 1.15u | HA Thread |
Vorbis
| Date | Title | Performed by | Type | Codecs | Links |
|---|---|---|---|---|---|
| 2004-06-17 | 160-kbps Special | Guruboolez | Private | CVS, GT3b2, aoTuVb2, aoTuVb2+QK | HA Thread |
| 2004-02-05 | -q4 Transients | Guruboolez | Private | RC3 2002-03, RC3 2002-04, 1.01, 1.01 QK2 | HA Thread |
Comparison Tests
| Date | Title | Performed by | Type | Codecs | Links |
|---|---|---|---|---|---|
| 2003-06-18 | 128-kbps ff123/rjamorim | Guruboolez | Private | Vorbis GT2 & PCVS | HA Thread |
| 2003-06-18 | 128-kbps ff123/rjamorim | Guruboolez | Private | WMA9 Standard & Pro | HA Thread |
| 2003-10-11 | 130-kbps Classical | Guruboolez | Private | AAC (FAAC, PsyTel, Nero, QuickTime) MP3 LAME, MPC, Vorbis CVS, WMA9 Pro |
HA Thread |
| 2003-12-13 | 128-kbps Classical | Guruboolez | Private | AAC (QuickTime, Nero, FAAC), Vorbis 1.01, WMA9, MP3 LAME | HA Thread |
| 2004-07-12 | 175-kbps Classical | Guruboolez | Private | Vorbis Megamix -q5,50, -q5,99 -q6,00 MP3 LAME 3.97a3 -V3, -V2, MPC -q5 |
|
| 2004-12-09 | 130-kbps Classical | Guruboolez | Private | AAC Nero 2.9.9.998 Vorbis aoTuVb3 |
|
| 2005-03-05 | 140-kbps VBR Classical | Guruboolez | Private | AAC Nero 3.0.0.4, Vorbis 1.1, QK28 | |
| 2005-03-17 | 256-kbps Transcoding (sub-ff123) | Guruboolez | Private | AAC iTunes 4.7, MP3 LAME 3.97a8 MPC 1.15u, Vorbis aoTuVb3, WavPack 4.2b3 Lossy |
|
| 2005-07-11 | 80-kbps Various | Guruboolez | Private | LAME MP3, AAC-HE and -LC, Vorbis aoTuV, WMA Std |
HA Thread |
| 2005-08-22 | 180-kbps Classical | Guruboolez | Private | AAC, MP3, MPC, Vorbis aoTuVb4 | HA Thread |
| 2006-01-13 | 128-kbps General | Sebastian Mares | Public | iTunes & Nero AAC, LAME MP3, Vorbis aoTuV, WMA Pro | HA Thread Complete Results |
External Tests
Other people also held listening tests outside of Hydrogenaudio (although the organizer of the tests are usually HA members :)
So, check out the following sites:
