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Encoders 64 kbit/s

If you´d like some other audio codecs to be added to this section, please drop us a line with your proposal.

AAC+ CBR@64.5 (Nero 6.0)
   
4.34 (≈1%)

 

 

 

AAC+ VBR@58.0 (NeroRef 1330)
   
4.00 (≈2%)

 

 

 

mp3PRO VBR@62.5
   
3.89 (≈2%)

 

 

 

AAC+ CBR@65.0 (Winamp 5.51)
   
3.79 (≈2%)

 

 

 

AAC CBR@65.7 (QuickTime 6.3)
   
3.56 (≈3%)

 

 

 

wma 9 VBR@67.0
   
3.53 (≈1%)

 

 

 

mp3PRO CBR@63.7
   
3.47 (≈1%)

 

 

 

wma 8 CBR@64.7
   
3.46 (≈0%)

 

 

 

wma 9 CBR@65.2
   
3.43 (≈1%)

 

 

 

AAC CBR@69.3 (LiquidAudio)
   
3.35 (≈0%)

 

 

 

AAC+ VBR@59.0 (Nero 6.0)
   
3.21 (≈2%)

 

 

 

Vorbis VBR@62.6 (Xiph 1.0)
   
3.14 (≈1%)

 

 

 

AAC CBR@63.9 (PsyTEL(R) 2.15)
   
3.08 (≈3%)

 

 

 

mp3 CBR@64.0 (Lame 3.91)
   
3.06 (≈4%)

 

 

 

mp3 CBR@64.3 (Musicmatch 8.10)
   
3.00 (≈4%)

 

 

 

mp3 CBR@64.0 (Musicmatch 6.10)
   
2.93 (≈3%)

 

 

 

AAC VBR@66.7 (Nero 5.5)
   
2.91 (≈4%)

 

 

 

ATRAC3plus CBR@64.9 (Hi-LP)
   
2.88 (≈3%)

 

 

 

AAC CBR@63.7 (Nero 5.5)
   
2.79 (≈3%)

 

 

 

ra 8 CBR@67.4
   
2.72 (≈2%)

 

 

 

mp3 ABR@61.9 (Lame 3.90.3)
   
2.67 (≈3%)

 

 

 

AAC VBR@64.2 (PsyTEL(R) 2.15)
   
2.63 (≈8%)

 

 

 

ATRAC3 CBR@66.3 (LP4)
   
2.54 (≈1%)

 

 

 

QDesign Music 2 CBR@63.9
   
2.53 (≈3%)

 

 

 

AAC CBR@63.7 (Nero 5.5) - MPEG-4 AAC CBR Low Complexity, 63.7 kbit/s FBR
CODER: Ahead MPEG-4 AAC Encoder Plugin for Ahead Nero Burning Rom 5.5.10.0
- Ahead audio RAW convertor (resampling plugin) - SINC, Quality 100
- Encoder quality - High
- AAC Profile - Low Complexity
- Enable PNS - No
- 32000 Hz Stereo
DECODER: Ahead MPEG-4 AAC Decoder Plugin for Ahead Nero Burning Rom 5.5.10.0

AAC CBR@63.9 (PsyTEL(R) 2.15) - MPEG-4 AAC CBR Low Complexity, 63.9 kbit/s FBR
CODER: PsyTEL(R) MPEG-4 AAC Encoder V2.15
- usage: aacenc -production -br 64 -resample 32000 -if test.wav
DECODER: Freeware AAC Decoder: Dec 28 2001 for WinAmp 2.78c
- output to Nullsoft Disk Writer plug-in 2.0a

AAC CBR@65.7 (QuickTime 6.3) - MPEG-4 AAC CBR Low Complexity, 65.7 kbit/s FBR
CODER: MPEG-4 Audio Compressor for QuickTime 6.3
- 32000 Hz (Recommended), Stereo
DECODER: QuickTime 6.3

AAC CBR@69.3 (LiquidAudio) - LiquidAudio AAC CBR, 69.3 kbit/s FBR
CODER: Liquid Player Promotional 6.1.0.15
- input from Audio CD
- 44100 Hz Stereo
DECODER: Liquid Player Promotional 6.1.0.15
- output to Audio CD

AAC VBR@64.2 (PsyTEL(R) 2.15) - MPEG-4 AAC VBR Low Complexity, 64.2 kbit/s FBR
CODER: PsyTEL(R) MPEG-4 AAC Encoder V2.15
- usage: aacenc -qvbr 5 -resample 32000 -if test.wav
DECODER: Freeware AAC Decoder: Dec 28 2001 for WinAmp 2.78c
- output to Nullsoft Disk Writer plug-in 2.0a

AAC VBR@66.7 (Nero 5.5) - MPEG-4 AAC VBR Low Complexity, 66.7 kbit/s FBR
CODER: Ahead MPEG-4 AAC Encoder Plugin for Ahead Nero Burning Rom 5.5.10.35
- Ahead audio RAW convertor (resampling plugin) - SINC, Quality 100
- Encoder quality - High
- AAC Profile - Low Complexity
- Enable PNS - No
- preset - RADIO
- 32000 Hz Stereo
DECODER: Ahead MPEG-4 AAC Decoder Plugin for Ahead Nero Burning Rom 5.5.10.35

AAC+ CBR@64.5 (Nero 6.0) - MPEG-4 AAC CBR High Efficiency, 64.5 kbit/s FBR
CODER: Ahead MPEG-4 AAC Encoder Plugin for Ahead Nero Burning Rom 6.0.0.23
- Encoder quality - High
- AAC Profile - High Efficiency
- Enable PNS - No
- 44100 Hz Stereo
DECODER: Ahead MPEG-4 AAC Decoder Plugin for Ahead Nero Burning Rom 6.0.0.23

AAC+ CBR@65.0 (Winamp 5.51) - MPEG-4 AAC High Efficiency CBR, 65.0 kbit/s FBR
CODER: MP4/aacPlus (HE-AAC) Encoder v1.27 from Winamp 5.51
- CD Ripping
- Bitrate: 64 kbps
- Channel Mode: Stereo
- 44100 Hz
DECODER: Winamp 5.51
- Nullsoft Disk Writer plug-in v2.14 (24bit)
- 24bit=>16bit by foobar2000 v0.9.4.5 (no dither)

AAC+ VBR@58.0 (NeroRef 1330) - MPEG-4 AAC High Efficiency VBR, 58.0 kbit/s FBR
CODER: Nero Digital Audio Reference MPEG-4 & 3GPP Audio Encoder 1.3.3.0 (build 2008-09-17)
- usage: neroAacEnc.exe -q 0.25 -if ref.wav -of out.mp4
- AAC Profile: High Efficiency
- 44100 Hz Stereo
DECODER: Nero Digital Audio Reference MPEG-4 & 3GPP Audio Decoder 1.3.3.0
- usage: neroAacDec.exe -if out.mp4 -of out.wav

AAC+ VBR@59.0 (Nero 6.0) - MPEG-4 AAC VBR High Efficiency, 59.0 kbit/s FBR
CODER: Ahead MPEG-4 AAC Encoder Plugin for Ahead Nero Burning Rom 6.0.0.23
- Encoder quality - High
- AAC Profile - High Efficiency
- Enable PNS - No
- preset - INTERNET
- 44100 Hz Stereo
DECODER: Ahead MPEG-4 AAC Decoder Plugin for Ahead Nero Burning Rom 6.0.0.23

ATRAC3 CBR@66.3 (LP4) - ATRAC3 (Sony MD LP4), 66.3 kbit/s FBR
CODER: SonicStage 1.5.03.08230
- 44100 Hz Joint-Stereo
DECODER: SonicStage 1.5.03.08230
- digital capture through Total Recorder 4.1a

ATRAC3plus CBR@64.9 (Hi-LP) - ATRAC3plus (used in Hi-MD and Sony's solid-state and CD walkman products), 64.9 kbit/s FBR
CODER: SonicStage 1.5.03.08230
- 44100 Hz Stereo
DECODER: SonicStage 1.5.03.08230
- digital capture through Total Recorder 4.1a

mp3 ABR@61.9 (Lame 3.90.3) - MPEG-1 Layer 3, Average Bit Rate, 61.9 kbit/s FBR
CODER: Lame 3.90.3 (Aug 2003)
- usage: lame --preset 64 test.wav test.mp3
- 22050 Hz Stereo
DECODER: THOMSON mp3PRO Audio Player Demo 1.1.0 Build 0

mp3 CBR@64.0 (Lame 3.91) - MPEG-1 Layer 3 CBR, 64.0 kbit/s FBR
CODER: Lame 3.91
- usage: lame -b 64 -q 0 test.wav test.mp3
- 22050 Hz Stereo
DECODER: THOMSON mp3PRO Audio Player Demo 1.0.2 Build 85.

mp3 CBR@64.0 (Musicmatch 6.10) - MPEG-1 Layer 3 CBR, 64.0 kbit/s FBR
CODER: MUSICMATCH Jukebox 6.10.0225CJJ
- input from Audio CD
- processing level - "very high"
- maximum bandwidth - "let encoder choose"
- 22050 Hz Stereo
DECODER: THOMSON mp3PRO Audio Player Demo 1.0.2 Build 85.

mp3 CBR@64.3 (Musicmatch 8.10) - MPEG-1 Layer 3 CBR, 64.3 kbit/s FBR
CODER: MUSICMATCH Jukebox 8.10.2017CJJ
- input from Audio CD
- processing level - "very high"
- maximum bandwidth - "let encoder choose"
- FM radio quality
- 22050 Hz Stereo
DECODER: THOMSON mp3PRO Audio Player Demo 1.1.0 (Build 0)

mp3PRO CBR@63.7 - mp3PRO CBR by Fraunhofer IIS & Coding Technologies, 63.7 kbit/s FBR
CODER: Nero mp3PRO Encoder Plugin for Ahead Nero Burning Rom 5.5.4
- Allow intensity stereo coding - yes
- Allow downmix - yes
- Padding - ISO
- 44100 Hz Stereo
DECODER: THOMSON mp3PRO Audio Player Demo 1.0.2 Build 85.

mp3PRO VBR@62.5 - mp3PRO VBR by Fraunhofer IIS & Coding Technologies, 62.5 kbit/s FBR
CODER: mp3PRO Encoder Plugin for Ahead Nero Burning Rom 5.5.10.0
- Encoding Quality - Highest
- Allow intensity stereo coding - yes
- Allow downmix - yes
- Padding - ISO
- preset - Medium
- 44100 Hz Stereo
DECODER: THOMSON mp3PRO Audio Player Demo 1.1.0 (Build 0)

QDesign Music 2 CBR@63.9 - 63.9 kbit/s FBR
CODER: QDesign Music Encoder 2 Pro for QuickTime 5.0.2 Pro Player Edition
- 44100 Hz Stereo
DECODER: QuickTime 5.0.2 Pro Player Edition.

ra 8 CBR@67.4 - RealAudio 8 CBR, 67.4 kbit/s FBR
CODER: RealJukebox 2 build 1.0.2.340
- input from Audio CD
- 44100 Hz Stereo
DECODER: RealJukebox 2 build 1.0.2.340
- output to Audio CD

Vorbis VBR@62.6 (Xiph 1.0) - OggVorbis, VBR, 62.6 kbit/s FBR
CODER: OggEnc 1.0 (libVorbis 1.0)
- usage: oggenc -q1 test.wav
- 44100 Hz Stereo
DECODER: OggDec 1.0 from OggVorbis package
- usage: oggdec test.ogg

wma 8 CBR@64.7 - Windows Media Audio 8 CBR, 64.7 kbit/s FBR
CODER: Microsoft Windows Media 8 Encoding Utility
- 44100 Hz Stereo
DECODER: Windows Media Audio 4.02 for Windows ACM.

wma 9 CBR@65.2 – Windows Media Audio 9 CBR, 65.2 kbit/s FBR
ENCODER: MS Windows Media Encoder v9.00.00.2799
- 16bit, 2-pass CBR
- 44100 Hz Stereo
DECODER: MS Windows Media Encoder v9.00.00.2799

wma 9 VBR@67.0 - Windows Media Audio 9 VBR, 67.0 kbit/s FBR
ENCODER: MS Windows Media Encoder v9.00.00.2799
- 24bit, quality-based VBR – Q50
- 44100 Hz Stereo
DECODER: MS Windows Media Encoder v9.00.00.2799

How to read the ratings

Rating bar

The ratings are updated live as new participants add their grades to the system. A rating bar consists of the following elements:

#1 - Device or technology being tested.

#2 - Value of actual perceived audio quality (rating) which is also indicated by a bar length #3. Anchor points could be interpreted as follows:

In most cases using this device/technology:

1.0 – you will hear heavily distorted sound
2.0 – you will hear unpleasant sound artifacts
3.0 – you will hear distinctly audible but tolerable sound artifacts
4.0 – you will hear faintly discernible sound artifacts
5.0 – you will not hear any sound artifacts
above 5.0 – all sound artifacts will be beyond threshold of human perception with corresponding perception margin

#4 and #5 - the high and the low of a rating. As each device is tested under nine different sound items, there are nine different local ratings for a device. In fact, the actual rating #2 is an average of those nine local ratings. The highest and the lowest ones are indicated. Big gap between them means that sound quality of device/technology is not consistent enough. It will vary with type of sound material: music of different genres and complexity, voice with or without music, noisy/clear recordings etc. The lowest local rating is more important in this sense as it indicates worst case behavior of tested device.

#6 - Reliability of rating. It is also indicated by the color of bar - more reliable ratings have less percentage values and darker bars. Reliability depends on number of grades returned by participants. In most cases 5% or less is OK.

#7 - Ruler for convenient measuring of highs and lows.

For devices with small impairments (not audible in ordinary listening tests) SoundExpert amplifies their sound artifacts to some predefined extent. Ratings of such devices are calculated analytically taking into account both the grades received and the amplification applied. They are above 5th grade on the scale showing certain quality headroom of such devices.