The formula to calculate the Pitch Shift (PS) from BPM is:
\[ PS = \frac{BPM}{60} \]
Where:
Let's say the total change in BPM is 120. Using the formula:
\[ PS = \frac{120}{60} \]
We get:
\[ PS = 2 \text{ Hz} \]
So, the pitch shift is 2 Hz.