ECG Database Applications Guide
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sigamp - measure signal amplitudes of a DB record
sigamp -r
record [ options ... ]
sigamp measures either baseline-corrected
RMS amplitudes or normal QRS peak-to-peak amplitudes for all signals of
the specified record. It makes up to 250 measurements for each signal
and calculates trimmed means (by discarding the largest and smallest 5%
of the measurements and taking the mean of the remaining 90%).
Options
include:
- -a annotator
- Measure QRS peak-to-peak amplitudes based on normal
QRS annotations from the specified annotator.
- -d dt1 dt2
- Set the measurement
window relative to QRS annotations. Defaults: dt1 = 0.05 (seconds before
the annotation); dt2 = 0.05 (seconds after the annotation).
- -f time
- Begin
at the specified time in record (default: the beginning of record).
- -h
- Print
a usage summary.
- -p
- Print results in physical units (default: ADC units).
- -t time
- Process until the specified time in record (default: the end of
the record). Processing will be terminated prematurely if 250 measurements
are made before reaching the specified time.
- -v
- Verbose mode: print individual
measurements as well as trimmed means.
- -w dtw
- Set RMS amplitude measurement
window. Default: dtw = 1 (second).
The shell variable DB should be set
and exported (see setdb(1)
).
calibrate(1)
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