Table 1. Factorial ANOVA table of experiment 1 showing the main effects and two-way interactions of all the variables on the four measurements of degradation.

	BR		EA		SNR		TSR
	F	p	F	p	F	p	F	p
Distance	17.274	<0.001	0.490	0.484	530.582	<0.001	105.512	<0.001
Mic. height	0.346	0.557	0.157	0.692	0.306	0.580	0.340	0.560
Note	0.212	0.645	38.427	<0.001	262.833	<0.001	49.034	<0.001
Site type	9.113	0.003	28.242	<0.001	18.396	<0.001	35.523	<0.001
Song type	19.007	<0.001	0.421	0.517	241.187	<0.001	3.723	0.054
Distance×Mic. height	3.223	0.073	0.318	0.573	<0.001	0.991	0.743	0.389
Distance×note	0.008	0.928	0.502	0.479	0.129	0.719	<0.001	0.997
Distance×site type	0.608	0.436	55.455	<0.001	5.201	0.023	<0.001	0.998
Distance×song type	1.025	0.312	0.965	0.326	3.202	0.074	1.434	0.232
Mic. height×note	0.113	0.737	2.764	0.097	1.905	0.168	0.768	0.381
Mic. height×site type	0.768	0.381	3.109	0.780	0.250	0.617	0.264	0.608
Mic. height×song type	1.808	0.179	0.003	0.958	0.168	0.682	0.062	0.803
Note×site type	0.058	0.810	7.255	0.007	8.240	0.004	1.208	0.272
Note×song type	15.825	<0.001	5.154	0.024	380.802	<0.001	9.764	0.002
Site type×song type	1.491	0.223	0.508	0.476	14.589	<0.001	5.273	0.022

All d.f. = 1.