Fig. 1. Overall flow diagram of the proposed approach
Fig. 2. Respiration signal obtained using UWB radar
Fig. 3. Normal respiration during speech activity
Fig. 4. Overall flow of the experiment.
Fig. 5. STFT of apnea signal. Apnea occurs at 45second and persists for 15seconds.
Fig. 6. STFT of apnea signal. Apnea occurs at 30second and persists for 15seconds.
Fig. 7. STFT of apnea signal. Apnea occurs at 40second and persists for 15seconds.
Fig. 8. STFT of normal respiration.
Table 1. Accuracy of estimation of apnea
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