Corrected ambiguity with the centre frequency content of the 'gaussiandotdot' and 'gaussiandotnorm' waveforms. Prior to this update the centre frequency of these waveforms were derived from a base Gaussian waveform with the user given frequency (deriving the pulse width), i.e. this resulted in higher than expected centre frequencies for these waveforms. This has now been corrected so that the user specified centre frequency is what is used for these waveforms.

Tidied up terminology relating to waveform centre frequency.

docs/source/input.rst

@@ -664,10 +664,10 @@ Allows you to specify waveforms to use with sources in the model. The syntax of
     * ``sine`` which is a single cycle of a sine waveform.
     * ``contsine`` which is a continuous sine waveform. In order to avoid introducing noise into the calculation the amplitude of the waveform is modulated for the first cycle of the sine wave (ramp excitation).
 * ``f1`` is the scaling of the maximum amplitude of the waveform (for a ``#hertzian_dipole`` the units will be Amps, for a ``#voltage_source`` or ``#transmission_line`` the units will be Volts).
-* ``f2`` is the frequency of the waveform (Hertz).
+* ``f2`` is the centre frequency of the waveform (Hertz). In the case of the Gaussian waveform it is related to the pulse width.
 * ``str2`` is an identifier for the waveform used to assign it to a source.
 
-For example, to specify a Gaussian waveform with an amplitude of one and a centre frequency of 1.2 GHz, use: ``#waveform: gaussian 1 1.2e9 my_gauss_pulse``.
+For example, to specify the normalised first derivate of a Gaussian waveform with an amplitude of one and a centre frequency of 1.2GHz, use: ``#waveform: gaussiandotnorm 1 1.2e9 my_gauss_pulse``.
 
 .. note::