Voice Over IP VoIP Voice Reconstruction Algorithms

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Voice Over IP (VoIP)Voice Reconstruction
Algorithms

• Programming Assignment 6
• Due 5/5/2007 12.00 Midnight

ECE573 Data Structures and Algorithms
Electrical and Computer Engineering
Dept. Rutgers University http//www.cs.rutgers.edu
/vchinni/dsa/
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Digital Communication
Speaker End
Microphone
Analog output (0-4khz range)
Sampling 8 kilo samples/sec Digitization 8 bits
per sample ? 64kbps in PCM standard PSTN ADPCM
?Adoptive 32 kbps Other modulations Lower bit
rates
Communication
Listener End
Frame recovery Sample reconstruction D to A
Conversion
Speaker
Analog output (0-4khz range)
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Voice Over IP
Media IP Networks Characteristics
Packetization Packet Size Delay Jitter
(Varying inter arrival time between packets) Out
of order arrival Dropped packets Delayed
packets No echo cancellers (not for us for
now) Issues Delays Missing packets Bandwidth

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Assignment

• Write Good Packet Management Algorithm for
  Receiver
• Not included
• Build Transmit End and Receiving End System
• Simulate Network characteristics
• Test it in between two computers

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Rules

• It is a Team Project Max of 3 people for team
  (min of 2)