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dc.contributor.authorGibson, ADW
dc.date.accessioned2016-10-27T13:09:12Z
dc.date.issued2016-03
dc.description.abstractThe Discrete Fourier Transform is a well-established tool for obtaining a frequency spectrum from a set of sampled data. The coefficients obtained from the DFT are complex-valued and so both phase and amplitude can be extracted. However, David Gibson asserts that if the sampled data originated in the real world (say, as a recording from a broadband radio antenna) the phase of the spectral components cannot be determined. This, he claims, is an 'obvious' observation, but one that is not emphasised in textbooks. The details of the problem are left for the reader to work out, as an interesting 'examination question' in DSP.en_GB
dc.identifier.citationVol. 93, pp. 8-9en_GB
dc.identifier.urihttp://hdl.handle.net/10871/24114
dc.language.isoenen_GB
dc.publisherBCRA: British Cave Research Associationen_GB
dc.relation.urlhttp://bcra.org.uk/pub/cregj/index.html?j=93en_GB
dc.rightsOpen access under the Creative Commons CC-BY-NC licenceen_GB
dc.titleSignal Phase Cannot Be Determined from a Fourier Transform of Sampled Dataen_GB
dc.typeArticleen_GB
dc.date.available2016-10-27T13:09:12Z
dc.identifier.issn1361-4800
exeter.article-numberhttp://doi.bcra.org.uk/j093008.fen_GB
dc.descriptionThis is the final version of the article. Available from BCRA via the URL in this record.en_GB
dc.identifier.journalCREG Journalen_GB


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