freeswitch

History

Steve Underwood 13fbaf7e0f Tweaks for spandsp		2012-03-29 23:33:11 +08:00
..
config	Addition of logging capability to the DTMF detector in spandsp, to aid debugging	2011-12-06 22:45:24 +08:00
debian
doc	Moved spandsp to a more recent version. A huge number of little changes occur here, as recently spandsp	2010-07-25 03:29:44 +08:00
spandsp	Added some new files for spandsp	2010-07-25 03:43:53 +08:00
spandsp-sim	Tweak spandsp tests	2012-03-28 21:45:20 +08:00
src	Tweaks for spandsp	2012-03-29 23:33:11 +08:00
test-data	Added some new files for spandsp	2010-07-25 03:43:53 +08:00
tests	Tweaks for spandsp	2012-03-29 23:33:11 +08:00
.update	force rebuild	2011-12-06 17:56:11 -06:00
AUTHORS
autogen.sh	Moved spandsp to a more recent version. A huge number of little changes occur here, as recently spandsp	2010-07-25 03:29:44 +08:00
ChangeLog
configure.ac	FS-287: fix bsd shell incompatibility	2010-10-03 05:02:58 -04:00
configure.gnu
COPYING
DueDiligence
INSTALL
Makefile.am	Moved spandsp to a more recent version. A huge number of little changes occur here, as recently spandsp	2010-07-25 03:29:44 +08:00
NEWS
README
README.testdata
spandsp.pc.in	Typo in the spandsp .pc.in file fixed	2011-01-22 13:36:16 +08:00
spandsp.spec
spandsp.spec.in
unpack_g722_data.sh	Moved spandsp to a more recent version. A huge number of little changes occur here, as recently spandsp	2010-07-25 03:29:44 +08:00
unpack_g726_data.sh	Moved spandsp to a more recent version. A huge number of little changes occur here, as recently spandsp	2010-07-25 03:29:44 +08:00
unpack_gsm0610_data.sh	Numerous little changes to spandsp that haven't been pushed to Freeswitch for a	2011-07-02 14:45:27 +08:00
unpack_v56ter_data.sh	Moved spandsp to a more recent version. A huge number of little changes occur here, as recently spandsp	2010-07-25 03:29:44 +08:00
wrapper.xsl	Numerous little changes to spandsp that haven't been pushed to Freeswitch for a	2011-07-02 14:45:27 +08:00

README

spandsp 0.0.5 - A DSP library for telephony
-------------------------------------------

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.
The software has been designed to avoid intellectual property issues, using
mature techniques where all relevant patents have expired. See the file
DueDiligence for important information about these intellectual property issues.

The library is licenced under the LGPL 2.1 licence. The test suite, and some support
programs are licenced under the GPL 2 licence. The full text of these licences can
be found in the file COPYING.

Dependencies
------------

spandsp depends on various other packages for various tasks. Most of these
dependencies relate to building the test suite.

libtiff (and libtiff-devel on most Linux distributions) is required to
build the spandsp library.

libaudiofile (and libaudiofile-devel) is required to build the test suite
fftw (and fftw-devel) is required to build the test suite. Version 2 or 3 of
FFTW may be used. Spandsp adapts to the differences between them.

fltk (and fltk-devel), Fl_Cartesian and Fl_Audio_Meter are required to build
the test suite with GUI interfaces for some of the tests. The tests will build
without these packages, but the GUI features will not be available.
Fl_Cartesian and Fl_Audio_Meter can be downloaded from
http://www.soft-switch.org/downloads.

Steve Underwood <steveu@coppice.org>