You may find that an existing database of
digitally recorded signals may be useful for your studies. PhysioNet, at
offers free on-line access to over 40 such databases with thousands of
recordings ranging in length from a few seconds to several days.
These include all or most of the MIT-BIH Arrhythmia Database, the
European ST-T Database, the MIT-BIH Polysomnographic Database, the
MGH/MF Waveform Database, and the Long-Term ST Database (which are
also available on CD-ROMs from their creators), and many other
databases available only via PhysioNet. WAVE can read these
databases directly from PhysioNet without downloading them first (the
WFDB library, which handles reading and writing data for WAVE ,
contains HTTP client code that permits applications such as WAVE to
read input with equal ease from local disks or remote web servers).
This is an excellent way to explore PhysioBank (PhysioNet's collection
of signal databases).
George B. Moody (email@example.com)