VS1053B Datasheet, PDF (30/79 Pages) List of Unclassifed Manufacturers – Ogg Vorbis/MP3/AAC/WMA/MIDI AUDIO CODEC

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VS1053b preliminary
VS1053B
8. FUNCTIONAL DESCRIPTION
8.2.6 Supported WMA Formats
Windows Media Audio codec versions 2, 7, 8, and 9 are supported. All WMA profiles (L1, L2, and L3)
are supported. Previously streams were separated into Classes 1, 2a, 2b, and 3. The decoder has passed
Microsoft’s conformance testing program. Windows Media Audio Professional is a different codec and
is not supported.
WMA 4.0 / 4.1:
Samplerate
Bitrate / kbit/s
/ Hz 5 6 8 10 12 16 20 22 32 40 48 64 80 96 128 160 192
8000 + + +
+
11025
++
16000
++++
22050
++++
32000
++++++
44100
+
++++++
48000
++
WMA 7:
Samplerate
Bitrate / kbit/s
/ Hz 5 6 8 10 12 16 20 22 32 40 48 64 80 96 128 160 192
8000 + + +
+
11025
++
16000
++++
22050
++++
32000
+
+++
44100
+
+++++++
48000
++
WMA 8:
Samplerate
Bitrate / kbit/s
/ Hz 5 6 8 10 12 16 20 22 32 40 48 64 80 96 128 160 192
8000 + + +
+
11025
++
16000
++++
22050
++++
32000
+
+++
44100
+
+++++++
48000
+++
WMA 9:
Samplerate
Bitrate / kbit/s
/ Hz 5 6 8 10 12 16 20 22 32 40 48 64 80 96 128 160 192 256 320
8000 + + +
+
11025
16000
++
++++
22050
++++
32000
44100
+
+++
+
+
+++++ + + + +
48000
+
++ + +
In addition to these expected WMA decoding profiles, all other bitrate and samplerate combinations are
supported, including variable bitrate WMA streams. Note that WMA does not consume the bitstream as
evenly as MP3, so you need a higher peak transfer capability for clean playback at the same bitrate.
Version 0.5, 2007-12-03
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