Simple algorithm for peak recognition in frequency spectrum
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F08%3APU80096" target="_blank" >RIV/00216305:26110/08:PU80096 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Simple algorithm for peak recognition in frequency spectrum
Original language description
In this article there is described a simple algorithm for peak recognition. It is primarily intended to be used for sound signal analysis. It is easy to find the highest value in spectrum, but the problem is to find other peaks. Then it is important to define what is considered to be a peak and what is the expected peak width (or FWHM, full width at half maximum). The peak usually has Gaussian bell shape but due to errors in measurement it also often contains noise. The noise prevents some naive algorithms to work properly because they may find many false maximums within one peak. The approach described in this article is based on Gaussian convolution smoothing of the whole spectrum which makes possible to find peak and its beginning and end. Then suchinterval is replaced by zeros and another peak can be found. The cycle goes on until desired number of peaks is found.
Czech name
Jednoduchý algoritmus pro vyhledávání maxim ve frekvenčním spektru
Czech description
Tento článek popisuje jednoduchý algoritmus pro získávání maxim. Primárně je tento algoritmus určen pro analýzu zvuku.
Classification
Type
D - Article in proceedings
CEP classification
AM - Pedagogy and education
OECD FORD branch
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Result continuities
Project
<a href="/en/project/GA103%2F06%2F1711" target="_blank" >GA103/06/1711: Defectoscopy of reinforced concrete elements and structures using non-linear acoustic spectroscopy</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2008
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
VÝSKUMNÉ A EDUKAČNÉ AKTIVITY NA KATEDRÁCH FYZIKY TECHNICKÝCH UNIVERZÍT
ISBN
978-80-227-2887-4
ISSN
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e-ISSN
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Number of pages
4
Pages from-to
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Publisher name
Neuveden
Place of publication
Neuveden
Event location
Bratislava
Event date
Jun 3, 2008
Type of event by nationality
EUR - Evropská akce
UT code for WoS article
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