3 Linearity Calculations

Linearity, or Gain Error, can be easily calculated for each accuracy measurement in Section 2. To do this, a reference value should be selected from the set of data. It is typical to use the condition of 1 W, 1 kHz, and 25°C. Linearity for each data point is then the difference from its respective reference value.

These values can then be plotted to show the changes in accuracy relative to the reference for each calculation. Fixed offsets to this data can be calculated out easily, but it is most desirable to see this line be flat and centered at zero for the best speaker protection performance. Figure 3-1 sample plot.

Figure 3-1 Sample Plot