If the toy has a clearly defined operating cycle, measure the time average (the equivalent continuous) sound pressure level in each microphoneposition during at least one whole cycle.
如果被测玩具有明显的运行周期,至少在一个完整周期内测得每个麦克风的按时平均(均等连续)声压水平。
2
The embodiment of the invention can add a direction positioning device in the array microphone, thus being capable of positioning the sound source after the position of the array microphone changes.