Audio Compression -vat, rat

vat

• Variable packet size - 20 -80 msec

• vat - energy detection :-(

• No redundancy

• Drop or …

• Noise fill (?)

• < 10 % packet loss

rat

• Variable packet size - 20-80 msec

• rat - energy detection :-)) average energy measure, but simpler than GSM

• Piggy-backs single - level redundancy

• Linear Predictive Coding

• Waveform substitution

• Random loss 20% - 30%

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