The spectral analysis commands in the DAPL system can operate on any data type at real-time rates, with options for presenting the results.
Calculate a Discrete Fourier Transform of data blocks up to
16K terms using the efficient Cooley-Tukey algorithm, with options
for forward and backward transforms, windowing, and post-transform
processing to complex numbers, magnitude/phase, or power spectral
Calculate a forward Discrete Fourier Transform over a narrow
band of frequencies, using an efficient Goertzel filtering algorithm,
with all of the relevant features of the FFT command.
Calculate Discrete Fourier Transforms with unusual data block
sizes, extreme precision, and complete control of processing options,
using the classic Singleton mixed-radix FFT algorithm.
Use FFT methods to compute an efficient cross-correlation
for blocks of data from two signals.
Use FFT methods to compute crosspower spectra for
blocks of data from two signals.
TFUNCTION1 or TFUNCTION2
Calculate amplitude gain in decibels and phase shift in
radians at each frequency, given the transforms of the input
and output signals, with choice of algorithms.
Visit our DSP section for information on applications and techniques.