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Tempo ramps - make documentation more confusing.

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nick_m 2016-04-19 23:24:55 +10:00
parent 29e0b2e5bf
commit 54758ddd4a
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7
libs/ardour/tempo.cc
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@ -328,6 +328,13 @@ t = b log (Ta / T0) / (T0 (e^(log (Ta / T0)) - 1))
By substituting our expanded t as a in the c function above, our problem is reduced to:
c = T0 (e^(log (Ta / T0)) - 1) / b
Of course the word 'beat' has been left loosely defined above.
In music, a beat is defined by the musical pulse (which comes from the tempo)
and the meter in use at a particular time (how many pulse divisions there are in one bar).
It would be more accurate to substitute the work 'pulse' for 'beat' above.
Anyway ...
We can now store c for future time calculations.
If the following tempo section (the one that defines c in conjunction with this one)
is changed or moved, c is no longer valid.