MP3, WAV and ADPCM
audio support is supported natively and audio can be protected within the shipping application file.
Marathon's alternatives were adding another T1 between Houston and Findlay, or ADPCM
(adaptive differential pulse code modulation) to compress the voice traffic and make more efficient use of the T1 capacity.
Audio Formats Supported: MP3, WMA, OGG, AAC, WAV, PCM and ADPCM
The S1V30300 supports AAC LC as well as ADPCM
audio codec, enabling the creation of high-sound-quality systems with small data volumes.
The capacity breakthrough combines the ability of ADPCM
technology to double and in some instances triple T1 capacity per channel with the ability of Vyyo's T1 over HFC solution to utilize 36 new 3.
done with Tellabs equipment compresses a DS0 circuit to 32kb/s, so instead of 24 channels on a T1, they get 48.
Other devices in the series are available with features such as: adaptive noise reduction, advanced tone detection, tone generation, full capacity conferencing, announcement playback, ADPCM
compression, In-Path TFO and more.
Rather than send 8 bits to describe the step fully, ADPCM
sends 4 bits to describe the change from the last sample.