| 摘要 |
PROBLEM TO BE SOLVED: To provide a pitch meter capable of measuring pitch at either time of running and walking and without necessitating any external operation for switching the setting of conditions between running and walking. SOLUTION: In the pitch arithmetic part of a portable electronic equipment, at the spectrum after the frequency of a body action signal is analyzed, line spectrums SA2 and SB3 with high level appearing in the area of >=100times/sec are second higher harmonic waves corresponding to a basic wave at the time of running or third higher harmonic waves corresponding to a basic wave at the time of walking. Then, it is found whether the line spectrums SA2 and SB3 are the second higher harmonic waves or the third higher harmonic waves, and when the signal as the second higher harmonic wave is judged, the pitch is found from its frequency but when the signal as the third higher harmonic wave is judged, the pitch is found from value corresponding to that 2/3-fold frequency. |
