| 摘要 |
Disclosed are a peak detection method, a peak detection apparatus, and a fetal heart beat detection apparatus. The peak detection method includes acquiring a function value where an average magnitude difference function (AMDF) is applied to an audio signal; acquiring a weight by applying a complementary number of 1 to the function value; applying the weight to an auto-correlation function of the audio signal; and detecting a peak from the auto-correlation function to which the weight is applied. |
