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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.
Spatialindex provides a general framework for developing spatial indices. Currently it defines generic interfaces, provides simple main memory and disk based storage managers and a robust implementation of an R*-tree, an MVR-tree and a TPR-tree.
Library Goals The purpose of this library is to provide: An extensible framework that will support robust spatial indexing methods. Support for sophisticated spatial queries. Range, point location, nearest neighbor and k-nearest neighbor as well as parametric queries (defined by spatial constraints) should be easy to deploy and run. Easy to use interfaces for inserting, deleting and updating information. Wide variety of customization capabilities. Basic index and storage characteristics like the page size, node capacity, minimum fan-out, splitting algorithm, etc. should be easy to customize. Index persistence. Internal memory and external memory structures should be supported. Clustered and non-clustered indices should be easy to be persisted. Features Generic main memory and disk based storage managers. R*-tree index (also supports linear and quadratic splitting). MVR-tree index (a.k.a. PPR-tree). TPR-tree index. Advanced query capabilities, using Strategy and Visitor patterns. Arbitrary shaped range queries, by defining generic geometry interfaces. Large parameterization capabilities, including dimensionality, fill factor, node capacity, etc. STR packing / bulk loading.
This package contains the spawn-fcgi program used for spawning FastCGI processes, which can be local or remote.