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VS1000 Datasheet, PDF (19/23 Pages) List of Unclassifed Manufacturers – Ogg Vorbis Player IC with USB and NAND FLASH Interface
VLSI
Solution y
VS1000b
VS1000
7. FIRMWARE OPERATION
7.5 Supported Audio Codecs
7.5.1 Supported Ogg Vorbis Formats
Parameter Min Max Unit
Channels
Window size
Sample rate
Bit rate
1
2
64 4096 samples
48000 Hz
500 kbit/s
Maximum window size for an Ogg Vorbis file is 8192, however only window sizes upto 4096 are in active use with
sample rates not exceeding 48 kHz.
With USB (12 MHz clock) sample rates above 46875 Hz are played back at 46875 Hz. There are no sample rate
restrictions for lower sample rates: non-standard sample rates can be played back without a performance penalty.
Only floor 1 is supported. No known current encoder uses floor 0.
All one- and two-channel Ogg Vorbis files within the restrictions above should be playable with this decoder.
Ogg Vorbis decoding supports Replay Gain technology. If the decoder finds a Replay Gain tag in the song header,
the tag is parsed and the player software uses it to adjust the sound level. For a song without any Replay Gain tag,
a default of -6 dB is used. For more details about Replay Gain, see http://en.wikipedia.org/wiki/Replay Gain and
http://www.replaygain.org/.
Version 1.0, 2007-09-11
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