<classSpec ident="att.midiTempo" module="MEI.midi" type="atts">
<desc>Attributes that record MIDI tempo information.</desc>
<attList org="group">
<attDef ident="midi.bpm" usage="opt">
<desc>Captures the number of *quarter notes* per minute. In MIDI, a beat is always defined
as a quarter note, *not the numerator of the time signature or the metronomic
indication*.</desc>
</attDef>
<attDef ident="midi.mspb" usage="opt">
<desc>Records the number of microseconds per *quarter note*. In MIDI, a beat is always
defined as a quarter note, *not the numerator of the time signature or the metronomic
indication*. At 120 quarter notes per minute, each quarter note will last 500,000
microseconds.</desc>
</attDef>
</attList>
</classSpec>