config FREETZ_LIB_libspandsp
	bool "libspandsp (libspandsp.so)"
	default n
	select FREETZ_LIB_libm
	select FREETZ_LIB_libtiff
	help
		SpanDSP is a library of DSP functions for telephony, in the 8000 sample per
		second world of E1s, T1s, and higher order PCM channels. It contains low level
		functions, such as basic filters. It also contains higher level functions, such
		as cadenced supervisory tone detection, and a complete software FAX machine.