Number of frequencies (logarithmic)

Theory

A logarithmic sweep gives every octave the same number of points, equation (1): fine at low frequency and coarser in Hz at high frequency, which matches how results are usually plotted and how the bands widen. Both end points are included. The cost of the sweep is proportional to $n$ .

Equations

f_j = f_{min}\left(\frac{f_{max}}{f_{min}}\right)^{j/(n-1)}, \qquad j = 0, \ldots, n-1, \qquad \frac{n-1}{\log_2(f_{max}/f_{min})}\ \text{points per octave}

(1)

where	meaning	unit
$n$	Number of frequencies (this setting)	-
$f_j$	Solved frequencies	Hz
$f_{min}, f_{max}$	Lowest and highest frequency	Hz

Default and rule

Default: 200
Rule: 200.
Source: The frequency list is the program's own construction: a geometric sequence from $f_{min}$ to $f_{max}$ .

Valid range ≥ 2; logarithmic spacing only

Values

At least 2. Shown for logarithmic spacing only.