VS1033 Datasheet, PDF (27/70 Pages) List of Unclassifed Manufacturers – MP3/AAC/WMA/MIDI AUDIO CODEC

VLSI
Solution ^y
VS1033a PRELIMINARY
VS1033A
8. FUNCTIONAL DESCRIPTION
8.2.5 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.
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 0.6, 2005-01-05
27