stft

Creates a vector of short time Fourier transform outputs.

Syntax

stft(resp_time, resp_mag, seg_locs, win_size, window, amp_type, amp_scale)

Argument

resp_time
Vector of response time samples.
resp_mag
Vector of response magnitudes.
seg_locs
Vector of segment locations.
win_size
The window size for each segment.
window
Vector of FIR filter weights.
amp_type
String indicating "peak" or "psd".
amp_scale
String indicating “db(a)”, “db”, “db(c)”, “db(u)”.

Example

Templex Expression Results
{stft(resp_time, resp_mag, seg_locs, 512, window, “peak”, “db”)} A vector of Fourier transform outputs.

Comments

The stft function is used to compute the outputs for a short time waterfall plot. The outputs for each segment are stored sequentially in the return vector.

This function is called from the Waterfall panel in HyperGraph 3D. This function is typically not called directly.