Documentation
Short-Time Fourier Transform with the Window Size Fixed in the Frequency Domain (STFT-FD)
C. Mateo, J.A. Talavera
Prepared by IIT
October, 16th 2017
Version: 1.4
Santa Cruz de Marcenado, 26. 28015 Madrid (Spain). Tel +34 91 542 28 00. Fax +34 91 542 31 76
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Documentation: STFT-FD
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CONTENTS
1. INTRODUCTION 1
2. CODE VERSION 1
3. FUNCTIONS 2
3.1 DIAGRAM 2
3.2 COMPUTING THE TRANSFORM 3
3.3 INTERFACES 4
3.3.1 Function test_all_examples 4
3.3.2 Function synthetic_signal 4
3.3.3 Function chirp2_signal 4
3.3.4 Function ecg_signal 5
3.3.5 Function analyze_stft_fd 5
3.3.6 Function plot_signal 6
3.3.7 Function STFT_FD1 6
3.3.8 Function STFT_FD2 7
3.3.9 Function plot_stft_fd 8
3.3.10 Function get_colormap 8
4. REFERENCES 9
Documentation: STFT-FD
ii May 2017
1. Introduction
The Short-Time Fourier Transform (STFT) can be used to convert signals whose
frequency content changes over time into the time-frequency domain.
This document describes a software package to compute a Short Time Fourier
Transform with the Window Size Fixed in The Frequency Domain (STFT-FD). The
proposed transform is published in [1,2].
2. Code version
Table 1 – Code metadata (mandatory)
Nr Code metadata description
C1
Current code version
V1.4
C2 Permanent link to code/repository used of
this code version
Code attached. Pending to upload and release upon
acceptance.
C3
Legal Code License
GNU General Public License, version 3.0 (GPL-3.0)
C4
Code versioning system used
None
C5 Software code languages, tools, and
services used
Matlab R1012a or higher
C6 Compilation requirements, operating
environments & dependencies
Communication toolbox is optionally required to add Gaussian
noise to the synthetic signal.
File ecg.txt containing an electrocardiogram signal has to be
downloaded from http://eleceng.dit.ie/dorran/matlab/ecg.txt
in order to test that case study.
In any case, there are additional self-generating test case
studies that can be directly analyzed using this software.
C7 If available Link to developer
documentation/manual
Documentation attached. Pending to upload and link upon
acceptance.
C8
Support email for questions
cmateo@comillas.edu
