Next:
Measuring Speech Quality in
Up:
Thesis
Previous:
Conclusions
Contents
Index
Measuring Speech and Video Quality, and Applications
ChapterChapter
Subsections
Measuring Speech Quality in Real-Time
Introduction
Measuring Network Parameters in a Testbed
Speech-Quality-Affecting Parameters
Other Effects
Our Method and Session Types
A Mean Opinion Score (MOS) Database for Different Languages
Assessment of Speech Quality by Neural Networks
Performance of other Speech Quality Measures
Conclusions
Measuring Video Quality
Introduction
Simulator Description
H263 encoder
H263 decoder
Network Transport Simulation
The Quality-Affecting Parameters
Subjective Quality Test and MOS Experiment
Results
Training the NN
How Well does the NN Perform?
Performance of other Video Quality Measures
A Demonstration Application
Conclusions
Study of Parameters Effects on the Quality
Introduction
Related Works
Parameters Impact on Speech Quality
Loss Rate (LR)
Consecutive Lost Packets (CLP)
Packetization Interval (PI)
Speech Codec
Parameters Impact on Video Quality
Bit Rate (BR)
Frame Rate (FR)
Loss Rate (LR)
The number of Consecutively Lost Packet (CLP)
Intra-to-Inter Ratio (RA)
Conclusions
A New Rate Control Mechanism
Introduction
Related Works
Limitation of RTCP in Rate Control
Equation-based TFRC
Our Proposed Rate Control Protocol
The Possible Controlling Parameters
Simulation Results
Speech Case
Video Case
Discussion
Conclusions
Samir Mohamed 2003-01-08
