The Discrete Fourier Transform, Part 3: The PSD

Douglas A. Lyon

doi:10.5381/jot.2009.8.6.c2

The Discrete Fourier Transform, Part 3: The PSD

Douglas A. Lyon

Fairfield University

Research output: Contribution to journal › Article › peer-review

Abstract

The basic idea of providing a noise filter is that you take a signal, with added noise, perform an FFT on the signal, remove all spectral harmonics that have a PSD below some threshold, and then take the IFFT. Selecting the PSD threshold for noise can be tricky. What works well on a synthetic sound might turn a sampled sound into silence.

Original language	American English
Journal	Journal of Object Technology
Volume	8
DOIs	https://doi.org/10.5381/jot.2009.8.6.c2
State	Published - Sep 1 2009

Disciplines

Computer Engineering
Engineering

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10.5381/jot.2009.8.6.c2License: CC BY

The Discrete Fourier Transform Part 3 The PSDFinal published version, 2.82 MBLicense: CC BY

Cite this

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AB - The basic idea of providing a noise filter is that you take a signal, with added noise, perform an FFT on the signal, remove all spectral harmonics that have a PSD below some threshold, and then take the IFFT. Selecting the PSD threshold for noise can be tricky. What works well on a synthetic sound might turn a sampled sound into silence.

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The Discrete Fourier Transform, Part 3: The PSD

Abstract

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