From zedwiki
Members
Dominic Labbé (lead) (HumanWare), Hiro Fujimori (Plextor), Colin Garnham (RNIB), Marc-André Hébert (HumanWare), Lloyd Rasmussen (NLS)
Work Plan
Milestones
- Milestone 1 – Identification of Criteria (Nov 1)
- Daisy IP policy
- Constant Bitrate
- Level of compression
- Quality
- Others to be defined
- Milestone 2 – Identification of Potential Codecs (Nov 1)
- Specified Codecs, In usage Codec (AMR-WB+, WMA DRM), others
- Milestone 3 – Report on Candidate rankings with Criteria (Dec 30)
- A table report that shows how each candidates ranks versus the criteria.
Dates
- Times - East Coast / Japan / UK -> Japan is +9 GMT, EST is -5
- 8am EST - 1pm GMT - 10pm JST
- Wednesday
- Biweekly - Codec/Lightweight, Container
- 9/25 - container
- 10/1 - lightweight / codec
Minutes
Results
Tables of CODECS considered
| Codecs/Criterias
| Status(Daisy, in Use or New)
| Platform independent specifications
| Multiple implementation providers
| Open non-proprietary standards (meaning the specification is publicly available)
| Royalty free (RF) specifications and standards that are available for all to implement (if not, indicate royalties involved)
| Royalities and other fees involved
| Fixed Point vs Floating Point
| Information on supported bitrate: constant versus variable
| Level of compression
| Type (voice, general audio, broadcast, cellphone, etc...)
| Level of acceptance in today's market
| Links
|
| MP3
| Daisy
| yes
| yes
| yes
| no
| 0,75 $
| Fixed point
| both
| 32 - 320 kbps
| general audio
| very high
| http://www.mp3licensing.com/
|
| MPEG2
| Daisy
| yes
| yes
| yes
| no
| 0,75 $
| Fixed point
| both
| 8 - 160 kbps
| general audio
| very high
| http://www.mp3licensing.com/
|
| WAV(16 bits PCM)
| Daisy
| yes
| yes
| yes
| yes
| None
| Fixed point
| constant
| lossless
| lossless
| very high
| N/A
|
| MP4-AAC
| Daisy
| yes
| no
| yes
| no
| 0,98 $
| Fixed point
| both
| 2 - 64 kps (per channel)
| general audio
| high
| http://www.vialicensing.com/licensing/AAC_index.cfm
|
| AMR-WB+
| In Use
| no
| no, VoiceAge
| no
| no
| 0,40 $
| fixed
| constant
| 5.2–48 kbit/s
| voice
| low
| http://www.voiceage.com/prodamrwbplus.php
|
| WMA with DRM
| In Use
| no
| no, Microsoft
| no
| no
| 0.10$(indirect license act), 0.20 (direct license acq.), 0.05 (network device)+ Regular WMA licence
| N/A
| N/A
| N/A
| N/A
| low
| http://www.microsoft.com/windows/windowsmedia/forpros/drm/default.mspx
|
| MPEG 2.5 layer 3
| New
| yes
| yes
| no
| no
| Include in mp3
| Fixed point
| both
| 16 - 32 kpbs (8-12 kHz)
| voice
| medium
| Proprietary extension from Fraunhofer
|
| MP3Pro
| New
| yes
| no
| no
| no
| 1,25 $
| Fixed point
| both
| 18 - 56 (mono) 32-96 kbps (stereo)
| general audio
| medium
| http://www.mp3licensing.com/
|
| WMA Audio 9
| New
| no
| no, Microsoft
| no
| no
| 0,10 $
| Floating point
| both
| 64 to 192 kbps
| general audio
| medium
| http://www.microsoft.com/windows/windowsmedia/forpros/codecs/audio.aspx
|
| WMA Audio 10 Professional
| New
| no
| no, Microsoft
| no
| no
| 0,10 $
| Information not available
| ???
| 24 to 768 kbps
| general audio
| medium
| http://www.microsoft.com/windows/windowsmedia/forpros/codecs/audio.aspx
|
| WMA Audio 9 Lossless
| New
| no
| no, Microsoft
| no
| no
| 0,10 $
| Information not available
| variable
| lossless, 50%
| general audio
| medium
| http://www.microsoft.com/windows/windowsmedia/forpros/codecs/audio.aspx
|
| WMA Audio 9 Voice
| New
| no
| no, Microsoft
| no
| no
| 0,10 $
| Information not available
| constant
| 4-20 kbit/s
| voice
| medium
| http://www.microsoft.com/windows/windowsmedia/forpros/codecs/audio.aspx
|
| Ogg Vorbis (OGG)
| New
| open source
| yes
| yes
| yes
| None
| fixed point implementation available
| both, mostly vbr
| Average from 45kb/s to 500kb/s
| general audio
| medium
| http://www.vorbis.com/
|
| Speex
| New
| open source
| yes
| yes
| yes
| None
| fixed point port
| both
| 4-25 kbit/s
| voice
| low
| http://www.speex.org/
|
| Flac
| New
| open source
| yes
| yes
| yes
| None
| fixed point implementation available
| variable
| lossless, 40-50% of pcm, better for voice only
| lossless
| low
| http://flac.sourceforge.net/
|
| MPG4-ALS
| New
| yes
| yes
| yes
| no
| Unable to locate vendor
| fixed/floating
| None
| lossless, 15-70% of PCM
| lossless
| low
| http://www.nue.tu-berlin.de/forschung/projekte/lossless/mp4als.html
|
| Unified Speech and Audio Codec (In development, launch scheduled for 2010)
| TBD
| Fraunhofer Institute and VoiceAge
| TBD
| TBD
| TBD
| TBD
| TBD
| TBD
| 12-64 kbit/s
| General audio and voice
| TBD
| http://www.audiodesignline.com/210601351?cid=RSSfeed_audiodesignline_adlRSS
|
