Table 3. Comparisons between different camera outputs (still) and the background sound envelope.

Model 1	Model 2	Statistic	p-value	Adjusted p-value
Background	HC600	tmax = 5.43	<0.01*	0.056
Background	SG550	tmax = 2.73	0.22	1.00
Background	KG680 V	tmax = 4.62	0.02*	0.53
Background	MI40	tmax = 5.14	0.02*	0.62
Background	MI65	tmax = 4.47	0.06	1.00
Background	Pixcontroller	tmax = 4.27	0.13	1.00
Background	Cuddeback	tmax = 13.53	<0.01*	0.00 *
HC600	SG550	tmax = 3.44	0.07	1.00
HC600	KG680 V	tmax = 2.99	0.20	1.00
HC600	MI40	tmax = 8.70	<0.01*	0.00*
HC600	MI65	tmax = 3.60	0.17	1.00
HC600	Pixcontroller	tmax = 5.89	0.03*	0.76
HC600	Cuddeback	tmax = 18.03	<0.01*	0.00*
SG550	KG680 V	tmax = 3.10	0.17	1.00
SG550	MI40	tmax = 6.74	0.01*	0.17
SG550	MI65	tmax = 3.561835	0.16	1.00
SG550	Pixcontroller	tmax = 5.09	0.11	1.00
SG550	Cuddeback	tmax = 15.10	<0.01*	0.00*
KG680 V	MI40	tmax = 2.40	0.56	1.00
KG680 V	MI65	tmax = 3.53	0.17	1.00
KG680 V	Pixcontroller	tmax = 5.01	0.04*	1.00
KG680 V	Cuddeback	tmax = 15.10	<0.01*	0.00*
MI40	MI65	tmax = 3.81	0.12	1.00
MI40	Pixcontroller	tmax = 4.16	0.21	1.00
MI40	Cuddeback	tmax = 11.00	0.03*	0.84
MI65	Pixcontroller	tmax = 4.38	0.08	1.00
MI65	Cuddeback	tmax = 12.99	<0.01*	0.00*
Pixcontroller	Cuddeback	tmax = 21.97	<0.01*	0.00*

Test statistics (t_max) falling below the critical value are not significant at the particular frequency whilst those at or above were considered significant. (*denotes significance at p<0.05).