Rank: 199 based on 279 downloads (last 30 days) and 3 files submitted
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Nate Yoder

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ATA Engineering
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40.40250015258789, -86.84500122070312

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Files Posted by Nate View all
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14 Jun 2011 Screenshot PeakFinder Quickly finds local maxima (peaks) or minima (valleys) in a noisy signal. Author: Nate Yoder chemistry, peak finder, extrema, signal processing, local max, maxima 261 10
  • 4.88889
4.9 | 10 ratings
13 Nov 2009 Screenshot PaddedHilbert Computes the Hilbert transform of a vector after it has been padded to ameliorate end effects. Author: Nate Yoder hilbert transform, end effects, hilbert envelope 9 0
06 Oct 2009 Screenshot PadSignal Pads a signal with portions of the signal itself to decrease end effects. Author: Nate Yoder end effects, hilbert transform, wavelet transform, hht, emd, hvt 9 0
Comments and Ratings by Nate View all
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14 Jun 2011 PeakFinder Quickly finds local maxima (peaks) or minima (valleys) in a noisy signal. Author: Nate Yoder

Thanks for catching that Tim. You were exactly right, the redundancy is an artifact from when I preallocated the matrix for speed. However, I essentially replaced this statement with the leftMin variable which is why you got the same results. The end effect is that the second part of that conditional can simply be eliminated.

Thanks again for your help and an updated version with the addition of a user defined threshold should be available shortly.
01 Dec 2009 layerplot A plot function much more powerful than plotyy Author: Zhipeng Gao

Has issues with resizing
01 Dec 2009 layerplot A plot function much more powerful than plotyy Author: Zhipeng Gao
16 Dec 2008 Kernel Density Estimator Reliable and extremely fast kernel density estimator for one-dimensional data Author: Zdravko Botev

I was incorrect but there does seem to be a scale factor on the density functions
16 Dec 2008 Kernel Density Estimator Reliable and extremely fast kernel density estimator for one-dimensional data Author: Zdravko Botev

Great code but I believe line 83 should be:
density=idct1d(a_t)/N;
instead of:
density=idct1d(a_t)/R;
in order to get an accurately scaled density function.
Comments and Ratings on Nate's Files View all
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02 Dec 2011 PeakFinder Quickly finds local maxima (peaks) or minima (valleys) in a noisy signal. Author: Nate Yoder Diana

Hi, I find this routine very good and useful. However, for my problem I would need the start-end information about each peak so I could select just the peaks and work with them, How can I get this information?

Thanks in advance
22 Sep 2011 PeakFinder Quickly finds local maxima (peaks) or minima (valleys) in a noisy signal. Author: Nate Yoder mohammad

 Really nice
12 Aug 2011 PeakFinder Quickly finds local maxima (peaks) or minima (valleys) in a noisy signal. Author: Nate Yoder Robert
11 Aug 2011 PeakFinder Quickly finds local maxima (peaks) or minima (valleys) in a noisy signal. Author: Nate Yoder Liu, Estella
18 Jun 2011 PeakFinder Quickly finds local maxima (peaks) or minima (valleys) in a noisy signal. Author: Nate Yoder Elisa

Hi. I need to find peaks in a waveform and calculate the inter-pulse interval and the pulse rate from the position of the peaks. My data are sounds recorded at 24000Hz and saved in .wav files. This code seems to be doing exactly what I want but since I’m a matlab newbie I’m not quite sure how to input my data. Do you have any suggestions?
 I hope this is the right place to post this message, otherwise I apologise.

Top Tags Applied by Nate
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end effects, hilbert envelope, hilbert transform, signal processing, chemistry
Files Tagged by Nate View all
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Updated   File Tags Downloads
(last 30 days) 		Comments Rating
14 Jun 2011 Screenshot PeakFinder Quickly finds local maxima (peaks) or minima (valleys) in a noisy signal. Author: Nate Yoder chemistry, peak finder, extrema, signal processing, local max, maxima 261 10
  • 4.88889
4.9 | 10 ratings
13 Nov 2009 Screenshot PaddedHilbert Computes the Hilbert transform of a vector after it has been padded to ameliorate end effects. Author: Nate Yoder hilbert transform, end effects, hilbert envelope 9 0
06 Oct 2009 Screenshot PadSignal Pads a signal with portions of the signal itself to decrease end effects. Author: Nate Yoder end effects, hilbert transform, wavelet transform, hht, emd, hvt 9 0
10 Jun 2008 Auto Peak Finder & Analyser Finds peaks, locations, fwhms and area in signal. Author: Martin Gorjan maximum detection and..., peak, fwhm, width, height, dsp 20 7
  • 3.0
3.0 | 1 rating

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