; score to demonstrate "beats" due to interference

f	1	0	1024	10	1	; sine wave

i	1	0	5	1	500	501
i	1	+	.	.	.	502
i	1	+	.	.	.	504
i	1	+	.	.	.	508
i	1	+	.	.	.	516
i	1	+	.	.	.	532
e