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ATRAC SP (Type-R) in 320 kbit/s group
md recorder atrac sp md minidisc type-r
Analysis of submitted ATRAC SP (Type-R) recordings
atrac sp type-r time warping
Call for ATRAC SP (Type-R) test recordings
atrac sp type-r hardware codec time shifts wow and flutter time warping
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WMA 9.2 VBR(Q90) added

Wide support of WMA format along with MP3 by manufacturers of portable players and powerful marketing strategy of MS did the job – WMA is very popular.

Q90 setting was added to 192 kbit/s group although it renders SE test items at average 160 kbit/s bitrate. If there are some other contenders in this bitrate sub-group, new page "Coders 160 kbit/s" will be inserted.

In case of current activity of volunteer testers first reliable values for the rating will appear in a fortnight. SE thanks Stig Lykke Iversen for this codec proposal.

Try to grade one of the 94 codecs rotated in SE system at the moment (ZIP: ~3Mb)