Table 2. Spectral and temporal measures of the songs of the Steppengrille (G. spec./assimilis), data from 34 males.

	carrier	pulse pattern		chirp pattern
	frequency [kHz]	pdur [ms]	ppau [ms]	pper [ms]	pDC	nr,P	Cdur [ms]	Cpau [ms]	Cper [ms]	CDC
mean	4,98	16,00	15,77	30,22	0,48	2,52	64,40	2274,0	2338,4	0,03
sd	0,29	3,62	4,81	3,98	0,11	0,38	12,52	608,1	612,6	0,01
CV, inter	5.8%	22.6%	30.5%	13.2%	22.9%	15.0%	19.4%	26.7%	26.2%	33.0%
CV, intra	n.a.	26.0%	27.0%	14.0%	27.0%	37.0%	44.0%	27.0%	26.0%	45.0%

Values were corrected to a temperature of 25°C.

Explanation of terms: pdur: pulse duration, ppau: pause duration, pper: pulse period, pDC: pulse duty cycle (pdur/pper), nr,P: number of pulses per chirp, Cdur: chirp duration, Cpau: chirp pause, Cper: chirp period, CDC: chirp duty cycle (Cdur/Cper). CV, inter: coefficient of variation between individuals (sd/mean), CV, intra: mean of coefficient of variation measured for individual males. On average 138 pulses (range: 15–483) and 58 chirps (range: 7–186) were analyzed per individual male song.