1spandsp 0.0.6 - A DSP library for telephony 2------------------------------------------- 3 4SpanDSP is a library of DSP functions for telephony, in the 8000 sample per 5second world of E1s, T1s, and higher order PCM channels. It contains low level 6functions, such as basic filters. It also contains higher level functions, such 7as cadenced supervisory tone detection, and a complete software FAX machine. 8The software has been designed to avoid intellectual property issues, using 9mature techniques where all relevant patents have expired. See the file 10DueDiligence for important information about these intellectual property issues. 11 12The library is licenced under the LGPL 2.1 licence. The test suite, and some support 13programs are licenced under the GPL 2 licence. The full text of these licences can 14be found in the file COPYING. 15 16Dependencies 17------------ 18 19spandsp depends on various other packages for various tasks. Most of these 20dependencies relate to building the test suite. 21 22libtiff (and libtiff-devel on most Linux distributions) is required to 23build the spandsp library. 24 25libaudiofile (and libaudiofile-devel) is required to build the test suite 26fftw (and fftw-devel) is required to build the test suite. Version 2 or 3 of 27FFTW may be used. Spandsp adapts to the differences between them. 28 29fltk (and fltk-devel), Fl_Cartesian and Fl_Audio_Meter are required to build 30the test suite with GUI interfaces for some of the tests. The tests will build 31without these packages, but the GUI features will not be available. 32Fl_Cartesian and Fl_Audio_Meter can be downloaded from 33http://www.soft-switch.org/downloads. 34 35Steve Underwood <steveu@coppice.org> 36