SUMMARY
Stretches (upsamples) data, including an optional interpolating FIR filter.
SYNTAX
STRETCH {n},{FILTER {ON|OFF}}
INPUT
n: Set upsampling factor. Must be in the range 2 to 7. FILTER {ON}: Turn interpolating filter option on. FILTER OFF: Turn interpolating filter option off.
DEFAULT VALUES
STRETCH 2 FILTER ON
DESCRIPTION
By using the interpolating filter option, this command can be used to create a file with a smaller sampling interval (more data points) but which looks similar to the original. Care should be taken when using this command, because the filter does effect the frequency content. When this filter option is off, the appropriate number of zeros are simply inserted between each of the original data points.
HEADER CHANGES
NPTS, DELTA, E, DEPMIN, DEPMAX, DEPMEN
LATEST REVISION
May 15, 1987 (Version 10.2)