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b/mit-bih-noise-stress-test-database-1.0.0/old/oldnstdb.txt |
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file: oldnstdb.doc G. Moody August 1992 |
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Copyright (C) Massachusetts Institute of Technology 1992. All rights reserved. |
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This directory contains the first edition of the MIT-BIH Noise Stress Test |
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Database, reproduced here for the sake of completeness. Unless you wish to |
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repeat an experiment based on the first edition, use the records in the main |
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`nstdb' directory of this disk (see `../nstdb/nstdb.doc'). |
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In the main `nstdb' directory, very long-term baseline drift (less than 0.05 |
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Hz) has been removed from records `bw', `em', and `ma'. The original versions |
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of these records from the first edition of this disk are records `oldbw', |
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`oldem', and `oldma' in this directory. |
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The signal-to-noise ratios of the sample noise stress test records in this |
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directory are not calibrated as stated in the `readme.doc' file on the first |
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edition of this disk. Using the same definition of SNR as for the records in |
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the main `nstdb' directory, the SNRs for these records are (in dB): |
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Record Signal 0 Signal 1 Record Signal 0 Signal 1 |
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118_02 19.79 14.38 119_02 20.31 13.79 |
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118_04 13.77 8.36 119_04 14.29 7.77 |
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118_06 10.25 4.84 119_06 10.76 4.25 |
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118_08 7.75 2.34 119_08 8.27 1.75 |
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118_10 5.81 0.41 (*) 119_10 6.33 -0.19 |
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118_12 4.23 -1.18 119_12 4.74 -1.77 |
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(*) Signal 1 was inadvertently omitted from the version of record 118_10 that |
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appeared on the first edition of this disk; it has been restored here. |