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| In [[signal processing]], the '''high frequency content measure''' is a simple measure, taken across a signal [[spectrum]] (usually a [[STFT]] spectrum), that can be used to characterize the amount of high-frequency content in the signal. The magnitudes of the spectral bins are added together, but multiplying each magnitude by the bin "position" (proportional to the frequency). Thus if ''X''(''k'') is a discrete spectrum with ''N'' unique points, its high frequency content measure is:
| | Marvella is what you can call her but it's not the most female name out there. I am a meter reader but I plan on changing it. For many years he's been residing in North Dakota and his family members loves it. Doing ceramics is what adore performing.<br><br>Also visit my webpage ... [http://rtdcs.hufs.ac.kr/?document_srl=780411 std home test] |
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| : <math>
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| \mathrm{HFC} = \sum_{i=0}^{N-1} i|X(i)|
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| </math> | |
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| In contrast to perceptual measures, this is not based on any evidence about its relevance to [[human hearing]]. Despite that, it can be useful for some applications, such as [[onset detection]].
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| The measure has close similarities to the [[spectral centroid]] measure, being essentially the same calculation but without normalization according to overall magnitude.
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| ==References==
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| * P. Brossier, J. P. Bello and M. D. Plumbley. ''[http://aubio.piem.org/articles/brossier04realtimesegmentation.pdf Real-time temporal segmentation of note objects in music signals]'', in Proceedings of the International Computer Music Conference (ICMC 2004), Miami, Florida, USA, November 1–6, 2004.
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| * Masri, P. (1996). ''Computer modeling of Sound for Transformation and Synthesis of Musical Signal.'' PhD dissertation, University of Bristol.
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| [[Category:Digital signal processing]]
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| {{Signal-processing-stub}}
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Latest revision as of 01:51, 30 October 2014
Marvella is what you can call her but it's not the most female name out there. I am a meter reader but I plan on changing it. For many years he's been residing in North Dakota and his family members loves it. Doing ceramics is what adore performing.
Also visit my webpage ... std home test