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Audio and Visual 235
Audio Operations
About MP3/WMA
MP3 (MPEG Audio Layer 3) is a standard format for audio compression.
By using MP3, a file can be compressed to about 1/10 of the original
size.
WMA (Windows Media Audio) is Microsoft's audio compression
technology. WMA files can be compressed to a size even smaller than
MP3 files.
This unit only supports certain MP3/WMA file standards, recorded
media and formats. Take note of the following when writing MP3/WMA
files onto a disc.
■ About the supported MP3 file standards
• Supported standards:
MPEG1/2/2.5 Audio Layer 3
• Supported sampling frequencies (kHz):
- MP3 (MPEG1 Audio Layer 3): 32, 44.1, 48
- MP3 (MPEG2 Audio Layer 3): 16, 22.05, 24
- MP3 (MPEG2.5 Audio Layer 3): 8, 11.025, 12
• Supported bit rates (kbps):
- MP3 (MPEG1 Audio Layer 3): 32, 40, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224,
256, 320
- MP3 (MPEG2/2.5 Audio Layer 3): 8, 16, 24, 32, 40, 48, 56, 64, 80, 96, 112, 128,
144, 160
* Supports VBR (Variable Bit Rate).
* Does not support Audio Layer 1/2.
* Emphasis supports only 50/15ms.
* Does not support free format.
* Does not support DRM (Digital Rights Management).
• Supported channel modes:
Stereo, Joint Stereo, Dual channels, Monaural
■ About the supported WMA file standards
• Supported standards:
WMA Ver. 7 to 9
• Supported sampling frequencies (kHz):
22.05, 24, 32, 44.1, 48
• Supported bit rates (kbps):
- WMA Ver. 7, 8: 48, 64, 80, 96, 128, 160, 192
- WMA Ver. 9: 48, 63, 64, 80, 95, 96, 127, 128, 160, 191, 192, 256, 320
* Supports 2-channel play only.
* Supports VBR (Variable Bit Rate).
* Does not support WMA9 Professional/Lossless/Voice.
* Does not support DRM (Digital Rights Management).
• Supported channel modes:
Stereo, Monaural
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