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MAX-CSE Web Interface
Stream Profiles Page Features (Cont.)
Feature
Audio:
Codec
(Short for enCOder/DECoder or
COmpressor/DECompressor)
Sampling Rate
Effective Rate
26
Description
This section allows the user/administrator to define the encoding
parameters for the audio portion of the outgoing stream.
• A drop-down list of audio codecs from which the user can
choose the type of MPEG audio compression used for the
audio portion of the outgoing stream.
• Available audio codecs: MP2 or MP3
• MP2 (MPEG Audio Layer-2) is used as a file extension for files
containing audio data of this type. It remains a dominant
standard for audio broadcasting. This file type allows the
coding of audio programs with more than two channels. The
main difference between these two types is that MP2 audio
files are generally larger than their MP3 counterparts and are
mostly used with MPEG-2 video streams.
Note: MP2 is recommended for use with a high bandwidth
video stream (ex: MPEG-4 or 6 Mbps - 3 Mbps).
• MP3 (MPEG Audio Layer-3) is a popular digital audio encoding
and lossy compression format. It was designed to greatly
reduce the amount of data required to represent the original
audio data, yet still sound like a faithful reproduction of the
original uncompressed audio to most listeners.
Note: MP3 is recommended for use with a low bandwidth
video stream (ex: MPEG-2 or < 3 Mbps).
• A drop-down list from which the user can choose the sampling
rate used on the audio source.
• Sampling rate defines the number of samples per second taken
from a continuous signal to make it a discrete signal.
• Rate is measured in KHz (KiloHertz).
• Available audio sampling rates: 32KHz, 44.1KHz, and
48KHz.
• Some of the common uses for these rates include:
- 32,000 KHz - miniDV digital video camcorder
- 44,100 KHz - compact disc, also most commonly used
with MPEG-1 audio (VCD, SVCD, MP3)
- 48,000 KHz - digital sound used for digital TV, DVD, DAT,
films and professional audio
• Currently, 32KHz is not supported within the Modero firmware.
• A drop-down list from which the user can choose the amount of
incoming audio data throughput available for use by the
MAX-CSE.
• The larger the amount of available audio data coming through
the unit for encoding, the better the outgoing audio quality to
the target IP device.
• Available effective data rates: 96Kbps or 192Kbps
MAX Video Encoder
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