Short-Time Fourier Transform with the Window Size Fixed in the Frequency Domain (STFT-FD): Implementation

descriptionPublicationkeyboard_double_arrow_right Article 01 Jul 2018 Spain English Publisher:Elsevier BVJournal:SoftwareX, volume 8, pages 5-8 (issn: 2352-7110,

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Authors: Carlos Mateo 0001; Juan Antonio Talavera;

doi: 10.1016/j.softx.2017.11.005

handle: 11531/24700

Short-Time Fourier Transform with the Window Size Fixed in the Frequency Domain (STFT-FD): Implementation

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Abstract

The Short-Time Fourier Transform (STFT) is widely used to convert signals from the time domain into a time frequency representation. This representation has well known limitations regarding time frequency resolution. In this paper, we present a set of MATLAB functions to compute a transform, which uses the basic concept of the Short-Time Fourier Transform, but fixes the window size in the frequency domain instead of in the time domain. This approach is simpler than similar existing methods, such as adaptive STFT or multi-resolution STFT, and in particular it requires neither the filters of multi-resolution techniques, nor the evaluation of the local signal characteristics of adaptive techniques. An illustrative example is presented and compared with the Morlet wavelet transform.

info:eu-repo/semantics/publishedVersion

Artículos en revistas

Country

Spain

Related Organizations

Comillas Pontifical University
Spain

Keywords

QA76.75-76.765, Computer software, 004, 620, Instituto de Investigación Tecnológica (IIT)

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