Since MIDI notes in a chord may be played at slightly different moments, Beat Detective interprets notes that are close together (closer than half the time value that is set in the Selection Contains field) as a chord.
Beat Detective uses the criteria you set in the Analysis pop-up menu to interpret the location of the beat in relation to the chord.
Sets the beat trigger to the start of the note in the chord played with the highest velocity.
Sets the beat trigger to a point that represents the average between the start of the first note played in the chord, and the last note played in the chord.
Sets the beat trigger to the start of the highest note played in the chord.
Sets the beat trigger to the start of the lowest note played in the chord.