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Header Files

Header files have names of the form `header.record' on writable UNIX and Macintosh file systems, where record is the record name. (MIT DB records are named 100--124 and 200--234 with some numbers missing. AHA DB records are named 1001--1010, 2001--2010, 3001--3010, 4001--4010, 5001--5010, 6001--6010, 7001--7010, and 8001--8010. ESC DB records are named e0103--e1304, with many numbers missing.) On CD-ROM and MS-DOS file systems, because of restrictions on the length of extensions, header files have names of the form `record.HEA'. Header files are text files, with lines terminated by ASCII carriage-return/line-feed pairs, created by newheader, setheader, or setmsheader, from which isigopen, osigopen, and dbinit read the names of the signal files and their attributes as given in the array of DB_Siginfo objects; sampfreq also reads a `header' file to determine the sampling frequency used for a record.


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George B. Moody (george@hstbme.mit.edu)