SanDisk Sansa e200 Series Manual Manual page 167

Chapter 12. Plugins
Navigation The display indicates the part properties and position in track as such:
Metronome Track
---------------
"Interlude"
3/4@120 V-25
P2/13: B1/5+2
In this example, the part label is "Interlude", the meter is 3/4 and the tempo 120 quarter
beats per minute (bpm). The volume setting is at -25 and this is the second part of a
track with 13 total. In that part, the position is at the second beat of the first bar of
five.
The syntax of programmed tracks in tempomap files follows the format defined by
http://das.nasophon.de/klick/. Actually, the goal is to keep compatibility between klick
and this Rockbox metronome. The parts of a track are specified one line each in this
scheme (pieces in [] optional):
[name:] bars [meter ]tempo[-tempo2[*accel|/accel] [pattern] [volume]
The bar count and tempo always have to be specified, the rest is optional.
One example is
part I: 12 3/4 133
for a part named "part I" , 12 bars long, in 3/4 meter with a tempo of 133 quarter
beats per minute. Tempo changes are indicated by specifying a tempo range and the
acceleration in one of these ways:
0 4/4 90-150*0.25
0 4/4 150-90/4
16 4/4 100-200
The first one goes from 90 to 150 bpm in an endless part with 0.25 bpm increase per
bar. The second one goes down from 150 to 90 with 4 bars per bpm change, which is
the same acceleration as in the first line. The last one is a part of 16 bars length that
changes tempo from 100 to 200 smoothly during its whole lifetime (6.25 bpm/bar). For
details on how the acceleration works, see
tempomath/tempomath.html.
It is also possible to provide a tempo for each individual beat in a part by separating
values with a comma (no spaces),
varibeat: 3 4/4 135,90,78,100,120,120,99,100,43,94,120,133
where the beat duration is first according to 135 bpm, then 90 bpm, and so forth. You
are required to provide a value for each beat in all bars of the part.
You can provide a pattern that controls how the beats are played:
The Rockbox manual
http://thomas.orgis.org/science/metronome-
(version rUnversioned directory-150220)
Sansa e200 and e200R Series
167