Professor A G

Constantinides©

AGC

DSP

AGC

DSP

Acoustic Echo Canceller

Professor A G

Constantinides©

AGC

DSP

AGC

DSP

Acoustic Echo

Professor A G

Constantinides©

AGC

DSP

AGC

DSP

Blind Equalisation

Professor A G

Constantinides©

AGC

DSP

AGC

DSP

Network Equalisation

Professor A G

Constantinides©

AGC

DSP

AGC

DSP

Local Loop Equalisation

Professor A G

Constantinides©

AGC

DSP

AGC

DSP

Hybrid equalisation

Professor A G

Constantinides©

AGC

DSP

AGC

DSP

Mobile network

Professor A G

Constantinides©

AGC

DSP

AGC

DSP

Mobile equalisation

Professor A G

Constantinides©

AGC

DSP

AGC

DSP

Satellite Systems

Professor A G

Constantinides©

AGC

DSP

AGC

DSP

Multi-phase Flows

A mixture of fluids in a pipe (eg in oil industry)

Water

Pipeline

Gas

Oil

Flow of Oil+Water+Gas+Others

Sensor 1 Sensor 2L

Professor A G

Constantinides©

AGC

DSP

AGC

DSP

Multi-phase Flows Objective to estimate the Velocity of flow

Modelling: At sensor 1 At sensor 2

Where is the noise at that sensor uncorrelated with the signal

TL

Vˆ

)()()( 11 twtstx )()()( 22 twTtstx

2,1)( itwi

Professor A G

Constantinides©

AGC

DSP

AGC

DSP

Adaptive Noise Canceller

To cancel broadband noise

][nd

]}[{ nx][ne

w:Filter

Adaptive

Algorithm

delay

signal_+noise

Output: Sine

Professor A G

Constantinides©

AGC

DSP

AGC

DSP

Adaptive Line Enhancer

To find a low level sinusoid in noise

][nd][ˆ nd

]}[{ nx

][new:Filter

Adaptive

Algorithm

delay

sine_+noise

Weights: w

FFT

Output

Professor A G

Constantinides©

AGC

DSP

AGC

DSP

Medicine

Mother

Adaptive Filter

Foetus

Professor A G

Constantinides©

AGC

DSP

AGC

DSP

Beamformers, Conventional

The coherent summing of outputs of many spatially sensors is known as beamforming

They are essentially spatial filters Extensively used in

Seismology Underwater acoustics Biomedical engineering Industrial testing Telecommunications

Professor A G

Constantinides©

AGC

DSP

AGC

DSP

Beamformers

.

.