Table 2.

Harmonic frequencies based on standard heartbeat baseline of 72bpm.

Number of harmonic frequency (HF)	1st HF	2nd HF	3rd HF	4th HF	5th HF	6th HF	7th HF	8th HF	9th HF	10th HF	11th HF	12th HF
Hz estimated by heart rate at 72 bpm	1.2	2.4	3.6	4.8	6.0	7.2	8.4	9.6	10.8	12	13.2	14.4