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AAC (Advanced Audio Coding) is a standardized, lossy compression and encoding scheme for digital
audio. AAC achieves better audio quality than MP3 and has been named a standard by the Motion
Picture Experts Group (MPEG)
AMR (Adaptive Multi-Rate Narrow-Band) is an audio data compression scheme optimized for speech
coding. AMR was adopted as the standard narrowband speech codec by 3GPP and is widely used in
GSM.
NOTE: When you select AMR Encoder for audio, the audio will automatically be encoded using
8 kHz mono for playback on cell phones.
The Audio Bitrate drop-down box provides you with several choices, as can be seen in the figure
below.
The Web interface for the Cisco Digital Media Encoder 2000 includes options for Streaming
Properties and Advanced Streaming Properties. As to the broadcast type you choose, you have the
option to check the Enable Streaming box. Please see the following section entitled Real Encoder
(Helix) for a more detailed description of enabling pull. Another option provides you with the
abilities to Save to Portable Media and provide a Media Title.
Cisco Digital Media Encoder 2000 User Guide
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