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VS1033C Datasheet, PDF (27/74 Pages) List of Unclassifed Manufacturers – MP3/AAC/WMA/MIDI AUDIO CODEC | |||
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VLSI
Solution y
VS1033c PRELIMINARY
VS1033C
8. FUNCTIONAL DESCRIPTION
8.2.5 Supported WMA Formats
Windows Media Audio codec versions 2, 7, 8, and 9 are supported. All WMA proï¬les (L1, L2, and L3)
are supported. Previously streams were separated into Classes 1, 2a, 2b, and 3. The decoder has passed
Microsoftâs 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 proï¬les, 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 0.9, 2006-08-15
27
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