![Teager Energy Operator
(TEO)
is a feature extraction circuit for EEG
For EEG:
BPF: for classification of specific sleep
stage. TEO: for feature classification
measurements, consisting of LPF and
multiplier. The later is used to
measure instantaneous energy.
TEO is designed by:
ψ x t =
dx(t)
dt
2
− x t
d2
x t
dt2
ψ x[n] = xn
2 − xn+1xn−1
Feature extraction measurements for
EXG signals: 1. TEO operator for EEG
2. Signal level detector for EMG
3. Signal peak detector for EOG
CF.: Wearable Multi-Biosignal Analysis Integrated Interface with the Direct Sleep
Stage Classification
AFE BPF TEO
EEG
LPF
Comparator
x2
Normalization
Digital output
LPF LPF x
x
Σ
Band Pass
Filtered
EEG](https://image.slidesharecdn.com/teagerenergyoperatorteo-200518143653/85/Teager-energy-operator-teo-1-320.jpg)
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Teager energy operator (teo)
- 1. Teager Energy Operator (TEO) is a feature extraction circuit for EEG For EEG: BPF: for classification of specific sleep stage. TEO: for feature classification measurements, consisting of LPF and multiplier. The later is used to measure instantaneous energy. TEO is designed by: ψ x t = dx(t) dt 2 − x t d2 x t dt2 ψ x[n] = xn 2 − xn+1xn−1 Feature extraction measurements for EXG signals: 1. TEO operator for EEG 2. Signal level detector for EMG 3. Signal peak detector for EOG CF.: Wearable Multi-Biosignal Analysis Integrated Interface with the Direct Sleep Stage Classification AFE BPF TEO EEG LPF Comparator x2 Normalization Digital output LPF LPF x x Σ Band Pass Filtered EEG