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Audio Settings
• Input – select analog or digital input to be used.
• A/D Amplifier Gain - Analog input gain in the range from -6 to +18 dB. Default level is 0 dB.
• Channels – select number of the input channels (1 or 2). If only one channel is selected, then
the Left one is used.
• Encoder + Sample Rate – select audio encoder and sample rate.
Available encoding formats are:
- HE-AAC v1 (AAC-LC +SBR)
- HE-AAC v2 (AAC-LC +SBR +PS)
- MPEG1 Layer 3 (MP3)
- PCM (uncompressed)
• Quality – Audio quality varies from 1 (Poor) to 6 (Excellent). Quality determines bitrate of the
encoded stream. For MP3 encoded stream bitrate is independent of other parameters. For HE-
AAC encoded stream bitrate depends on encoder version, number of channels and sample rate
(see table below):
Please note all rates are in kbps.
NOTE:
Quality does not apply to PCM stream. For PCM stream bitrate is calculated by the
following equation: (sample rate)*(Number of channels)*16, [bps].
• Stereo mode – selecting stereo mode. Supported modes are Stereo, Joint Stereo or Dual
Channels.
NOTE:
This parameter applies only to MP3 stream.
• CRC - selecting whether MP3 stream to contain information on error detection.
Note: This parameter applies only to MP3 stream.
• Emphasis – selecting the emphasis to be applied. Supported values are 50μs, CCITT J.17 and
NO emphasis.
NOTE: This parameter applies only to MP3 stream.
65 Aleksandar Stamboliyski Str., 8000 Bourgas, Bulgaria
Tel: +359 56/820027, Fax: +359 56/836700
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E-mail: office@devabroadcast.com
Web: www.devabroadcast.com
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