Comparison of correlation and modulus difference processing algorithms for the determination of foetal heart rate from ultrasonic Doppler signals.
D005318:Fetal Heart / Q000502:physiology*; D005323:Fetal Monitoring / Q000379:methods*; D006339:Heart Rate; D006801:Humans; D008838:Microcomputers; D014463:Ultrasonography / Q000379:methods*