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Fiche 1,  Justifications,  Anglais

Record number: 1, Textual support number: 1 CONT

Fetal heart detectors are devices that use ultrasonic waves to provide audible and/or visual information. They consist of an ultrasound-frequency electrical generator and appropriate ultrasound transducers housed in a probe that is placed on the maternal abdomen. Ultrasonic heartbeat detectors amplify the audible frequency shift signal of the returned ultrasonic waves and deliver it to speakers or headphones; the heart rate is determined either by measuring the timing of the peaks in the Doppler signal or, more accurately, by using automated autocorrelation procedures.  1, fiche 1, Anglais, - ultrasonic%20fetal%20heart%20detector

Fiche 1,  Justifications,  Français

Record number: 1, Textual support number: 1 OBS

ultrasonique : Cette graphie, puisée des Rectifications de l'orthographe recommandées par le Conseil supérieur de la langue française, est attestée dans le Petit Robert (2006).  2, fiche 1, Français, - d%C3%A9tecteur%20cardiaque%20f%26oelig%3Btal%20ultrasonique

Fiche 1,  Justifications,  Espagnol