我有笔记
<note default-x="106.96" default-y="-25.00">
<pitch>
<step>A</step>
<octave>3</octave>
</pitch>
<duration>2</duration>
<voice>1</voice>
<type>eighth</type>
<stem>up</stem>
<staff>1</staff>
<beam number="1">begin</beam>
</note>
tempo
如果= ,我怎样才能找到玩它的时间(以秒为单位)120bpm
?