Currently, if should().beCloseToArray() fails, you get something like:

FAIL X Rendered audio does not equal [0.00634784996509552,0.007568590342998505,0.007690664380788803,0.00906399730592966,0.009155552834272385,0.009247108362615108,0.009002960287034512,0.008880886249244213,0.008514664135873318,0.008209479041397572,0.007568590342998505,0.007751701399683952,0.007751701399683952,0.008026367984712124,0.008423108607530594,0.008362071588635445...] with an element-wise tolerance of {"absoluteThreshold":0,"relativeThreshold":0}.
	Index	Actual			Expected		AbsError		RelError		Test threshold
	[57]	1.6174856573343277e-3	1.6174810007214546e-3	4.6566128730773926e-9	2.8789289463062480e-6	0.0000000000000000e+0
	[58]	1.2207552790641785e-3	1.2207403779029846e-3	1.4901161193847656e-8	1.2206658732338491e-5	0.0000000000000000e+0
	[59]	4.8832967877388000e-4	4.8829615116119385e-4	3.3527612686157227e-8	6.8662455369404010e-5	0.0000000000000000e+0
	[60]	1.5263631939888000e-4	1.5259254723787308e-4	4.3772161006927490e-8	2.8685648020995453e-4	0.0000000000000000e+0
	[61]	-3.0466355383396149e-5	-3.0517578125000000e-5	5.1222741603851318e-8	1.6784667968750000e-3	0.0000000000000000e+0
	Max AbsError of 4.5150518417358398e-6 at index of 61170.
	Max RelError of Infinity at index of 4769. assert_true: expected true got false

This is fine, but look at the message of where the max abserror and relerror occurred at.  It would be nice if the data for index 61170 and 4769 were also printed out to get a feeling of why this error occurred.