File g Generate signal

g sin(x)
You have to define the frequency, the sample rate (samples/sec), the length in seconds and the amplitude. The X axis will be interpreted as seconds, so a frequency of 2 Hz with a sample rate of 20, a length of 1 second and an amplitude of 1 will produce a plot of 2 sinuses with 21 data points: 

g white noise
You have to define the sample rate, the length in seconds and the amplitude. White noise in this case is noise where every y-value is present an equal number of times. This results in a pretty equally distributed noise band.

 
white noise with the corresponding histogram of Y-values

g Gauss noise
You have to define the sample rate, the length in seconds and the amplitude for 99.7% of the distribution.

 
gaussian noise with the corresponding histogram of y-values

g Gauss curve
You have to define the center, the peak value, the standard deviation and the resolution. The width of the peak will be approximately 6 times the standard deviation.

center 0, peak 2, stdev 2